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  • Articles  (462)
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  • American Association for the Advancement of Science (AAAS)  (462)
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  • 1
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-15
    Description: How much of something do we need to keep people safe and well? This question is frequently asked by those working in risk management. Across diverse sectors from flood protection to health care, practitioners assess risk as the product of the impact of a given event and the probability of its occurrence. Although these estimates are often uncertain, policy-makers must ultimately make spending decisions aimed at averting these risks, because the costs of inaction to society can be substantial. Biodiversity loss is a similarly critical, yet uncertain, issue. On page 288 of this issue, Newbold et al. (1) quantify global biodiversity losses, providing much-needed information on the encroachment of proposed “safe limits.” Author: Tom H. Oliver
    Keywords: Ecology
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  • 2
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-15
    Description: Butterflies are better documented and monitored worldwide than any other nonpest taxon of insects (1). In the United Kingdom alone, volunteer recorders have sampled more than 750,000 km of repeat transects since 1976, equivalent to walking to the Moon and back counting butterflies (2). Such programs are revealing regional extinctions and population declines that began before 1900 (3, 4). In a recent study, Habel et al. report a similar story based on inventories of butterflies and burnet moths since 1840 in a protected area in Bavaria, Germany (5). The results reveal severe species losses: Scarce, specialized butterflies have largely disappeared, leaving ecosystems dominated by common generalist ones. Similar trends are seen across Europe (6) and beyond, with protected areas failing to conserve many species for which they were once famed. Author: Jeremy A. Thomas
    Keywords: Ecology
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  • 3
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-15
    Description: Author: Julia Fahrenkamp-Uppenbrink
    Keywords: Ecology
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  • 4
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-22
    Description: On 21 October 2013, the Italian phytosanitary service notified the European Commission (EC) that the plant pathogen Xylella fastidiosa had been detected in olive trees near Gallipoli, a tourist destination in Italy's southern region of Apulia (1). This xylem-limited bacterium is spread by insect vectors and causes disease in crops such as grapevines, citrus, coffee, and almond; various ornamentals; and trees such as oaks, elms, and sycamores. Because of the risks of X. fastidiosa being introduced, established, and spread throughout Europe, this species is a regulated quarantine pest. Yet, X. fastidiosa has been left unchecked and has marched northward, leaving destruction in its wake (see the photo) (2). The establishment of X. fastidiosa in Italy has been an agricultural, environmental, political, and cultural disaster. Author: Rodrigo P. P. Almeida
    Keywords: Ecology
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  • 5
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-22
    Description: Author: Julia Fahrenkamp-Uppenbrink
    Keywords: Ecology
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  • 6
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-04-08
    Description: Recent dives into Colombia's Cartagena Bay have revealed an unusually resilient coral reef thriving in the polluted waters. But the reef faces a threat: an end to Colombia's decades-long guerrilla war. The government is on the verge of inking a peace deal with its main adversary, the Revolutionary Armed Forces of Colombia, or FARC. Experts expect peace to lead to a development boom, threatening ecosystems all over the country with deforestation and runoff. A new shipping lane is planned for Cartagena Bay, and construction will mean dredging right through the reef. Researchers believe studying the reef's resiliency could help struggling corals around the world and are racing to collect samples before it's too late. Author: Lizzie Wade
    Keywords: Ecology
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  • 7
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-03-25
    Description: Early Victorian naturalists marveled at the profusion of diversity they encountered as they traveled from temperate to tropical latitudes. The inverse relationship between latitude and species richness that these naturalists first observed is now referred to as the latitudinal diversity gradient. Various ecological and evolutionary explanations have been proposed for the latitudinal diversity gradient. Of these, perhaps none are more relevant to contemporary conservation issues than Janzen's hypothesis of latitudinal differences in species' climatic tolerances and thermal selectivity (1). On page 1437 of this issue, Chan et al. (2) advance Janzen's early theories by elucidating some of the potential selective pressures imposed by climate and climate variability. Authors: Timothy M. Perez, James T. Stroud, Kenneth J. Feeley
    Keywords: Ecology
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  • 8
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-01
    Description: In 1492, Columbus encountered frigate birds while en route to the New World and noted that the bird “does not alight on the sea nor depart from land 20 leagues” (1). Columbus observed correctly that frigate birds do not land on the sea, but he severely underestimated how far some frigate birds fly from land. On page 74 of this issue, Weimerskirch et al. (2) show that great frigate birds (Fregata minor) reduce transit costs by riding strong thermal updrafts beneath or inside cumulus clouds and then gliding long distances to another thermal, searching for food along the way. By exploiting cumulus clouds and trade winds in the Indian Ocean, the birds forage around the doldrums, a largely windless zone. Authors: Raymond B. Huey, Curtis Deutsch
    Keywords: Ecology
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  • 9
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-07-01
    Description: Climate change affects wild plant species across their geographical ranges. Studies at the margins of species' ranges reveal upslope expansion, low-elevation range contraction, and, in some cases, a lack of geographic response to climate change (1). However, all populations, including those in the core of species' ranges, are subject to climate-driven natural selection that promotes adaptation to a warmer world (2). Theoretical models show that coupled spatial and temporal responses of populations can mediate the negative effects of climate change (3, 4), but it remains unclear whether these processes can occur fast enough to rescue populations from extinction (5). On page 69 of this issue, Petry et al. (6) report rapid spatial and temporal change in plant sex ratios in response to changing climatic conditions. These changes could facilitate geographic range shifts in the montane perennial herb valerian (Valeriana edulis). Authors: Julie R. Etterson, Susan J. Mazer
    Keywords: Ecology
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  • 10
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-08-13
    Description: New rules governing 1 million hectares of federal forestland in the Pacific Northwest are rekindling a bit of the old-growth timber wars of the late 20th century. The changes announced by the Bureau of Land Management (BLM) on 5 August have environmentalists charging that it rolls back important habitat protections contained in the 1994 Northwest Forest Plan. That plan severely curtailed logging on 10 million hectares of federal lands in the name of protecting forests and species, including the northern spotted owl. Meanwhile, Oregon counties that get timber revenue from BLM land charge that the agency is still restricting logging too much. Some scientists are siding with the environmental groups, whereas others say the new approach is an advance that rests on science that has emerged over the last 2 decades. The outcome of this debate could set the stage for changes by the U.S. Forest Service, which controls most of the land covered by the 1994 plan. Author: Warren Cornwall
    Keywords: Ecology
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  • 11
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-06-24
    Description: Degenerated retinas, globs of liver fat, wildly fluctuating blood sugar and insulin levels—all can spell trouble for people. But they are a way of life for Astyanax mexicanus, better known as the blind cave fish or Mexican tetra. For decades, biologists have studied these pale 6-centimeter-long fish to understand the ecological and evolutionary effects of subterranean life. Now, some researchers argue that the fishes' adaptations can shed light on human diseases including retinal degeneration and diabetes. And results presented last week at the 2016 International Conference on Subterranean Biology back up that view. The U.S. National Institutes of Health sees promise in cave fish as well, having agreed to fund the work of several cave fish biologists. Author: Elizabeth Pennisi
    Keywords: Ecology
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  • 12
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-08-16
    Description: Concerns over deforestation have led to attempts to identify suitable areas for reforestation around the world (1). The most ambitious effort to date is the World Resources Institute (WRI) Atlas of Forest and Landscape Restoration Opportunities (1). This map is linked to a global plan to reforest degraded lands to offset anthropogenic CO2 emissions. The immediate target is the reforestation of 1.5 million km2 by 2020 (2, 3). Vast areas of open grassy vegetation have been identified as suitable for reforestation. But are all these grasslands secondary products of deforestations? Recent research shows that grasslands are often ancient and highly biodiverse, but it remains difficult to distinguish between primary and secondary grasslands on a large scale. Reforestation efforts thus risk converting ancient tropical grasslands to plantations. Author: William J. Bond
    Keywords: Ecology
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  • 13
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-08-16
    Description: Author: Julia Fahrenkamp-Uppenbrink
    Keywords: Ecology
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  • 14
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-06-17
    Description: Soil microorganisms are central to the provision of food, feed, fiber, and medicine. Engineering of soil microbiomes may promote plant growth and plant health, thus contributing to food security and agricultural sustainability (1, 2). However, little is known about most soil microorganisms and their impact on plant health. Disease-suppressive soils offer microbiome-mediated protection of crop plants against infections by soil-borne pathogens. Understanding of the microbial consortia and mechanisms involved in disease suppression may help to better manage plants while reducing fertilizer and pesticide inputs. Authors: Jos M. Raaijmakers, Mark Mazzola
    Keywords: Ecology
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  • 15
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-06-17
    Description: Author: Julia Fahrenkamp-Uppenbrink
    Keywords: Ecology
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  • 16
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-06-03
    Description: History tells us that the motivation for new environmental policy is much stronger when there is demonstrated ecological impact. Multinational agreements to stop the use of DDT followed the precipitous decline of predatory bird populations. Similarly, decisions to regulate emissions to prevent acid rain followed widespread degradation of aquatic habitats. Ideally, environmental policy should be catalyzed by scientific evidence rather than environmental catastrophe. As scientists, we can do our part by providing evidence that is relevant to the natural environment. On page 1213 of this issue, Lönnstedt and Eklöv (1) take an important step forward in this regard by reporting ecologically relevant evidence on a growing environmental issue: microplastic pollution. Author: Chelsea M. Rochman
    Keywords: Ecology
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  • 17
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-02-16
    Keywords: Ecology
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  • 18
    Publication Date: 2018-02-16
    Description: Ecologists have shown through hundreds of experiments that ecological communities with more species produce higher levels of essential ecosystem functions such as biomass production, nutrient cycling, and pollination, but whether this finding holds in nature (that is, in large-scale and unmanipulated systems) is controversial. This knowledge gap is troubling because ecosystem services have been widely adopted as a justification for global biodiversity conservation. Here we show that, to provide crop pollination in natural systems, the number of bee species must increase by at least one order of magnitude compared with that in field experiments. This increase is driven by species turnover and its interaction with functional dominance, mechanisms that emerge only at large scales. Our results show that maintaining ecosystem services in nature requires many species, including relatively rare ones.
    Keywords: Ecology
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  • 19
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-06-22
    Keywords: Ecology
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  • 20
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-09-14
    Description: Billions of animals cross the globe each year during seasonal migrations, but efforts to monitor them are hampered by the unpredictability of their movements. We developed a bird migration forecast system at a continental scale by leveraging 23 years of spring observations to identify associations between atmospheric conditions and bird migration intensity. Our models explained up to 81% of variation in migration intensity across the United States at altitudes of 0 to 3000 meters, and performance remained high in forecasting events 1 to 7 days in advance (62 to 76% of variation was explained). Avian migratory movements across the United States likely exceed 500 million individuals per night during peak passage. Bird migration forecasts will reduce collisions with buildings, airplanes, and wind turbines; inform a variety of monitoring efforts; and engage the public.
    Keywords: Ecology
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  • 21
    Publication Date: 2018-09-14
    Description: Nie and colleagues suggest a key role for interannual climate variation as an explanation for the temporal dynamics of an unexpected 20-year reversal of biomass responses of C 3 -C 4 grasses to elevated CO 2 . However, we had already identified some climate-dependent differences in C 3 and C 4 responses to eCO 2 and shown that these could not fully explain the temporal dynamics we observed.
    Keywords: Ecology
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  • 22
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-09-28
    Keywords: Ecology
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  • 23
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-10-05
    Keywords: Ecology
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  • 24
    Publication Date: 2018-10-05
    Description: Biodiversity experiments have shown that species loss reduces ecosystem functioning in grassland. To test whether this result can be extrapolated to forests, the main contributors to terrestrial primary productivity, requires large-scale experiments. We manipulated tree species richness by planting more than 150,000 trees in plots with 1 to 16 species. Simulating multiple extinction scenarios, we found that richness strongly increased stand-level productivity. After 8 years, 16-species mixtures had accumulated over twice the amount of carbon found in average monocultures and similar amounts as those of two commercial monocultures. Species richness effects were strongly associated with functional and phylogenetic diversity. A shrub addition treatment reduced tree productivity, but this reduction was smaller at high shrub species richness. Our results encourage multispecies afforestation strategies to restore biodiversity and mitigate climate change.
    Keywords: Ecology
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  • 25
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-12-21
    Keywords: Ecology
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  • 26
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-03-18
    Description: Imagine a chain of uninterrupted wild landscapes spanning the savannas and forests of southern and central Africa, the woodlands of Poland and Belarus, and the tropical forests of Central and South America. By committing half of the planet's terrestrial and marine surface to nature, Edward O. Wilson believes that we can save millions of species, as well as humanity. This is Wilson's audacious proposal to stave off the coming biological apocalypse, the sixth mass extinction event, which he outlines in Half-Earth: Our Planet's Fight for Life. Author: Christine J. Griffiths
    Keywords: Ecology
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  • 27
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-05-13
    Description: Humans have long used animals as sentinels for threats to their own well-being. Canaries in coal mines are a classic example. On a global scale, studies of birds were key to detecting environmental problems caused by the excessive use of pesticides (1, 2). The recent loss of up to 98% of some vulture populations highlights the widespread dangerous effects of diclofenac use in cattle (3). Bee populations, sentinels for global insect losses, are also declining owing to the combined stress from pesticides and other environmental changes caused by humans, resulting in a widespread loss of pollination services (4). On page 819 of this issue, van Gils et al. (5) highlight another global ecological warning sign, this time linked to Arctic warming. They show that long-term changes in the body architecture of Arctic wading birds can affect their survival in their tropical wintering range. Authors: Martin Wikelski, Grigori Tertitski
    Keywords: Ecology
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  • 28
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-04-01
    Description: Even as recently as early March, Australian coral reef scientists still hoped that the legendary Great Barrier Reef (GBR) would get off lightly in the current El Niño, the climate phenomenon that brings unusually warm water to the equatorial Pacific, stressing and often killing corals. No such luck. On 20 March, the GBR Marine Park Authority in Townsville, Australia, reported that divers were finding extensive coral bleaching—the loss of symbiotic algae—in remote northern areas of the reef. Many sections were already dead. Subsequent flyover surveys have confirmed an unfolding disaster, with only four of 520 reefs appearing unscathed. The GBR joins a lengthening list of reefs bleached because of the El Niño that started in late 2014. It is now the longest bleaching event ever, and many more corals worldwide will likely die. Author: Dennis Normile
    Keywords: Ecology
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  • 29
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-04-15
    Description: Almost all land plants, including most trees, shrubs, and herbs, form symbiotic associations with mycorrhizal fungi (1). These soil fungi acquire nutrients that they transfer to their plant hosts in exchange for carbon (see the photo). Plants in natural vegetation can acquire up to 80% of nitrogen and phosphorus from their mycorrhizal associates (2). Individual mycorrhizal fungi can simultaneously colonize many plant hosts of the same species or different species. As a result, plants in natural communities are interconnected by mycorrhizal networks. Earlier studies with small tree seedlings revealed that carbon is transferred from one plant to another through these underground mycorrhizal pipelines (3). On page 342 of this issue, Klein et al. (4) show that interplant carbon transfer is not confined to tree seedlings. Author: Marcel G. A. van der Heijden
    Keywords: Ecology
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  • 30
    Publication Date: 2018-10-19
    Keywords: Ecology
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  • 31
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-10-19
    Keywords: Ecology
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  • 32
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-11-23
    Keywords: Ecology
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  • 33
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-11-23
    Keywords: Ecology
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  • 34
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-12-07
    Keywords: Ecology
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  • 35
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-12-14
    Keywords: Ecology
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  • 36
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-08-10
    Keywords: Ecology
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  • 37
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-09-07
    Keywords: Ecology
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  • 38
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-05-18
    Keywords: Ecology
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  • 39
    Publication Date: 2018-05-18
    Description: In an era of massive biodiversity loss, the greatest conservation success story has been the growth of protected land globally. Protected areas are the primary defense against biodiversity loss, but extensive human activity within their boundaries can undermine this. Using the most comprehensive global map of human pressure, we show that 6 million square kilometers (32.8%) of protected land is under intense human pressure. For protected areas designated before the Convention on Biological Diversity was ratified in 1992, 55% have since experienced human pressure increases. These increases were lowest in large, strict protected areas, showing that they are potentially effective, at least in some nations. Transparent reporting on human pressure within protected areas is now critical, as are global targets aimed at efforts required to halt biodiversity loss.
    Keywords: Ecology
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  • 40
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-05-25
    Description: LaManna et al . (Reports, 30 June 2017, p. 1389) found higher conspecific negative density dependence in tree communities at lower latitudes, yielding a possible mechanistic explanation for the latitudinal diversity gradient. We show that their results are artifacts of a selective data transformation and a forced zero intercept in their fitted model. A corrected analysis shows no latitudinal trend.
    Keywords: Ecology
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  • 41
    Publication Date: 2018-05-25
    Description: Chisholm and Fung claim that our method of estimating conspecific negative density dependence (CNDD) in recruitment is systematically biased, and present an alternative method that shows no latitudinal pattern in CNDD. We demonstrate that their approach produces strongly biased estimates of CNDD, explaining why they do not detect a latitudinal pattern. We also address their methodological concerns using an alternative distance-weighted approach, which supports our original findings of a latitudinal gradient in CNDD and a latitudinal shift in the relationship between CNDD and species abundance.
    Keywords: Ecology
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  • 42
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-11-09
    Keywords: Ecology
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  • 43
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-07-13
    Description: Sabo et al . (Research Articles, 8 December 2017, p. 1270) use sophisticated analyses of flow and fishery data from the Lower Mekong Basin to design a "good" hydrograph that, if implemented by planned hydropower dams, would increase the catch by a factor of 3.7. However, the hydrograph is not implementable, and, if it were, it would devastate the fishery. Further, the analyses are questionable.
    Keywords: Ecology
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  • 44
    Publication Date: 2018-06-22
    Keywords: Ecology
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  • 45
    Publication Date: 2015-08-22
    Description: Paradigms of sustainable exploitation focus on population dynamics of prey and yields to humanity but ignore the behavior of humans as predators. We compared patterns of predation by contemporary hunters and fishers with those of other predators that compete over shared prey (terrestrial mammals and marine fishes). Our global survey (2125 estimates of annual finite exploitation rate) revealed that humans kill adult prey, the reproductive capital of populations, at much higher median rates than other predators (up to 14 times higher), with particularly intense exploitation of terrestrial carnivores and fishes. Given this competitive dominance, impacts on predators, and other unique predatory behavior, we suggest that humans function as an unsustainable "super predator," which-unless additionally constrained by managers-will continue to alter ecological and evolutionary processes globally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Darimont, Chris T -- Fox, Caroline H -- Bryan, Heather M -- Reimchen, Thomas E -- New York, N.Y. -- Science. 2015 Aug 21;349(6250):858-60. doi: 10.1126/science.aac4249.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geography, University of Victoria, Post Office Box 1700, Station CSC, Victoria, British Columbia V8W 2Y2, Canada. Raincoast Conservation Foundation, Post Office Box 2429, Sidney, British Columbia V8L 3Y3, Canada. Hakai Institute, Post Office Box 309, Heriot Bay, British Columbia V0P 1H0, Canada. darimont@uvic.ca. ; Department of Geography, University of Victoria, Post Office Box 1700, Station CSC, Victoria, British Columbia V8W 2Y2, Canada. Raincoast Conservation Foundation, Post Office Box 2429, Sidney, British Columbia V8L 3Y3, Canada. ; Department of Geography, University of Victoria, Post Office Box 1700, Station CSC, Victoria, British Columbia V8W 2Y2, Canada. Raincoast Conservation Foundation, Post Office Box 2429, Sidney, British Columbia V8L 3Y3, Canada. Hakai Institute, Post Office Box 309, Heriot Bay, British Columbia V0P 1H0, Canada. ; Department of Biology, University of Victoria, Post Office Box 3060, Station CSC, Victoria, British Columbia V8W 2Y2, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26293961" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; *Consumer Behavior ; Ecology ; Fishes ; Humans ; Mammals/psychology ; Population Dynamics ; *Predatory Behavior ; Reproduction
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  • 46
    Publication Date: 2015-10-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merrigan, Kathleen -- Griffin, Timothy -- Wilde, Parke -- Robien, Kimberly -- Goldberg, Jeanne -- Dietz, William -- New York, N.Y. -- Science. 2015 Oct 9;350(6257):165-6. doi: 10.1126/science.aab2031. Epub 2015 Oct 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Trachtenberg School of Public Policy and Public Administration, the George Washington University, Washington, DC 20052, USA. kmerrigan@gwu.edu. ; Friedman School of Nutrition Science and Policy, Tufts University, Medford, MA 02155, USA. ; Milken Institute School of Public Health, the George Washington University, Washington, DC 20052, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26429883" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Diet/*standards ; Food Assistance ; Food Technology/*standards ; Humans ; *Nutrition Policy ; United States
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  • 47
    Publication Date: 2015-06-13
    Description: During rest, brain activity is synchronized between different regions widely distributed throughout the brain, forming functional networks. However, the molecular mechanisms supporting functional connectivity remain undefined. We show that functional brain networks defined with resting-state functional magnetic resonance imaging can be recapitulated by using measures of correlated gene expression in a post mortem brain tissue data set. The set of 136 genes we identify is significantly enriched for ion channels. Polymorphisms in this set of genes significantly affect resting-state functional connectivity in a large sample of healthy adolescents. Expression levels of these genes are also significantly associated with axonal connectivity in the mouse. The results provide convergent, multimodal evidence that resting-state functional networks correlate with the orchestrated activity of dozens of genes linked to ion channel activity and synaptic function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richiardi, Jonas -- Altmann, Andre -- Milazzo, Anna-Clare -- Chang, Catie -- Chakravarty, M Mallar -- Banaschewski, Tobias -- Barker, Gareth J -- Bokde, Arun L W -- Bromberg, Uli -- Buchel, Christian -- Conrod, Patricia -- Fauth-Buhler, Mira -- Flor, Herta -- Frouin, Vincent -- Gallinat, Jurgen -- Garavan, Hugh -- Gowland, Penny -- Heinz, Andreas -- Lemaitre, Herve -- Mann, Karl F -- Martinot, Jean-Luc -- Nees, Frauke -- Paus, Tomas -- Pausova, Zdenka -- Rietschel, Marcella -- Robbins, Trevor W -- Smolka, Michael N -- Spanagel, Rainer -- Strohle, Andreas -- Schumann, Gunter -- Hawrylycz, Mike -- Poline, Jean-Baptiste -- Greicius, Michael D -- IMAGEN consortium -- 93558/Medical Research Council/United Kingdom -- R01 MH085772-01A1/MH/NIMH NIH HHS/ -- R01NS073498/NS/NINDS NIH HHS/ -- U54 EB020403/EB/NIBIB NIH HHS/ -- Department of Health/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2015 Jun 12;348(6240):1241-4. doi: 10.1126/science.1255905. Epub 2015 Jun 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Functional Imaging in Neuropsychiatric Disorders Laboratory, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA. Laboratory of Neurology and Imaging of Cognition, Department of Neuroscience, University of Geneva, Geneva, Switzerland. jonas.richiardi@unige.ch greicius@stanford.edu. ; Functional Imaging in Neuropsychiatric Disorders Laboratory, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA. ; The War Related Illness and Injury Study Center, VA Palo Alto Health Care System, Palo Alto, CA, USA. Functional Imaging in Neuropsychiatric Disorders Laboratory, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA. ; Advanced MRI Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA. ; Cerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada. Departments of Psychiatry and Biomedical Engineering, McGill University, Montreal, Canada. ; Department of Child and Adolescent Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. ; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK. ; Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland. ; Universitaetsklinikum Hamburg Eppendorf, Hamburg, Germany. ; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK. Department of Psychiatry, Universite de Montreal, Centre Hospitalier Universitaire (CHU) Ste Justine Hospital, Montreal, Canada. ; Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. ; Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. ; Neurospin, Commissariat a l'Energie Atomique et aux Energies Alternatives, Paris, France. ; Department of Psychiatry and Psychotherapy, Campus Charite Mitte, Charite-Universitatsmedizin Berlin, Berlin, Germany. ; Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland. Departments of Psychiatry and Psychology, University of Vermont, Burlington, VT, USA. ; School of Physics and Astronomy, University of Nottingham, Nottingham, UK. ; Institut National de la Sante et de la Recherche Medicale, INSERM Unit 1000 "Neuroimaging and Psychiatry," University Paris Sud, Orsay, France. INSERM Unit 1000 at Maison de Solenn, Assistance Publique Hopitaux de Paris (APHP), Cochin Hospital, University Paris Descartes, Sorbonne Paris Cite, Paris, France. ; Rotman Research Institute, University of Toronto, Toronto, Canada. School of Psychology, University of Nottingham, Nottingham, UK. ; The Hospital for Sick Children, University of Toronto, Toronto, Canada. ; Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. ; Behavioural and Clinical Neuroscience Institute and Department of Psychology, University of Cambridge, Cambridge, UK. ; Department of Psychiatry and Psychotherapy, and Neuroimaging Center, Technische Universitat Dresden, Dresden, Germany. ; Department of Psychopharmacology, Central Institute of Mental Health, Faculty of Clinical Medicine Mannheim, Mannheim, Germany. ; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK. Medical Research Council (MRC) Social, Genetic and Developmental Psychiatry (SGDP) Centre, London, UK. ; Allen Institute for Brain Science, Seattle, WA, USA. ; Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA. ; Functional Imaging in Neuropsychiatric Disorders Laboratory, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA. jonas.richiardi@unige.ch greicius@stanford.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26068849" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Animals ; Brain/metabolism/*physiology ; Female ; Gene Expression ; Humans ; Ion Channels/*genetics ; Magnetic Resonance Imaging ; Male ; Mice ; Nerve Net/metabolism/*physiology ; Neural Pathways/metabolism/physiology ; Polymorphism, Genetic ; Rest/*physiology ; Synapses/metabolism/physiology ; *Transcriptome ; Young Adult
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  • 48
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2015-07-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, Jeffrey -- New York, N.Y. -- Science. 2015 Jul 3;349(6243):16. doi: 10.1126/science.349.6243.16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26138958" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Age Factors ; Animal Experimentation ; Animals ; *Attitude ; Data Collection ; Female ; Global Warming ; Humans ; Nuclear Energy ; Politics ; *Public Opinion ; *Research ; Sex Factors ; United States
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  • 49
    Publication Date: 2015-05-23
    Description: Extremophiles, microorganisms thriving in extreme environmental conditions, must have proteins and nucleic acids that are stable at extremes of temperature and pH. The nonenveloped, rod-shaped virus SIRV2 (Sulfolobus islandicus rod-shaped virus 2) infects the hyperthermophilic acidophile Sulfolobus islandicus, which lives at 80 degrees C and pH 3. We have used cryo-electron microscopy to generate a three-dimensional reconstruction of the SIRV2 virion at ~4 angstrom resolution, which revealed a previously unknown form of virion organization. Although almost half of the capsid protein is unstructured in solution, this unstructured region folds in the virion into a single extended alpha helix that wraps around the DNA. The DNA is entirely in the A-form, which suggests a common mechanism with bacterial spores for protecting DNA in the most adverse environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DiMaio, Frank -- Yu, Xiong -- Rensen, Elena -- Krupovic, Mart -- Prangishvili, David -- Egelman, Edward H -- GM035269/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 May 22;348(6237):914-7. doi: 10.1126/science.aaa4181.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, WA 98195, USA. ; Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA. ; Institut Pasteur, Department of Microbiology, 25 rue du Dr. Roux, Paris 75015, France. ; Institut Pasteur, Department of Microbiology, 25 rue du Dr. Roux, Paris 75015, France. egelman@virginia.edu david.prangishvili@pasteur.fr. ; Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA. egelman@virginia.edu david.prangishvili@pasteur.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25999507" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cryoelectron Microscopy ; DNA, A-Form/*metabolism ; Molecular Sequence Data ; Protein Multimerization ; Protein Structure, Secondary ; Rudiviridae/*metabolism/ultrastructure ; Spores, Bacterial/genetics/virology ; Sulfolobus/*genetics/*virology ; Virion/*ultrastructure
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  • 50
    Publication Date: 2015-10-10
    Description: Strigolactones are naturally occurring signaling molecules that affect plant development, fungi-plant interactions, and parasitic plant infestations. We characterized the function of 11 strigolactone receptors from the parasitic plant Striga hermonthica using chemical and structural biology. We found a clade of polyspecific receptors, including one that is sensitive to picomolar concentrations of strigolactone. A crystal structure of a highly sensitive strigolactone receptor from Striga revealed a larger binding pocket than that of the Arabidopsis receptor, which could explain the increased range of strigolactone sensitivity. Thus, the sensitivity of Striga to strigolactones from host plants is driven by receptor sensitivity. By expressing strigolactone receptors in Arabidopsis, we developed a bioassay that can be used to identify chemicals and crops with altered strigolactone levels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Toh, Shigeo -- Holbrook-Smith, Duncan -- Stogios, Peter J -- Onopriyenko, Olena -- Lumba, Shelley -- Tsuchiya, Yuichiro -- Savchenko, Alexei -- McCourt, Peter -- New York, N.Y. -- Science. 2015 Oct 9;350(6257):203-7. doi: 10.1126/science.aac9476.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto M5S 3B2, Canada. ; Department of Chemical Engineering and Applied Chemistry, Banting and Best Department of Medical Research, University of Toronto, 200 College Street, Toronto M5S 3E5, Canada. Center for Structural Genomics of Infectious Diseases, contracted by National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA. ; Department of Chemical Engineering and Applied Chemistry, Banting and Best Department of Medical Research, University of Toronto, 200 College Street, Toronto M5S 3E5, Canada. ; Institute of Transformative Bio-Molecules, Nagoya University, Japan, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan. ; Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto M5S 3B2, Canada. peter.mccourt@utoronto.ca.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26450211" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/genetics/metabolism ; Catalytic Domain ; Germination/drug effects ; Heterocyclic Compounds, 3-Ring/*metabolism/pharmacology ; Lactones/*metabolism/pharmacology ; Molecular Sequence Data ; Phylogeny ; Plant Growth Regulators/*metabolism/pharmacology ; Plant Proteins/*chemistry/classification/genetics ; Protein Structure, Secondary ; Receptors, Cell Surface/*chemistry/classification/genetics ; Seeds/genetics/growth & development/metabolism ; Striga/genetics/growth & development/*metabolism ; Structure-Activity Relationship
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  • 51
    Publication Date: 2016-01-20
    Description: Massive open online courses (MOOCs) are often characterized as remedies to educational disparities related to social class. Using data from 68 MOOCs offered by Harvard and MIT between 2012 and 2014, we found that course participants from the United States tended to live in more-affluent and better-educated neighborhoods than the average U.S. resident. Among those who did register for courses, students with greater socioeconomic resources were more likely to earn a certificate. Furthermore, these differences in MOOC access and completion were larger for adolescents and young adults, the traditional ages where people find on-ramps into science, technology, engineering, and mathematics (STEM) coursework and careers. Our findings raise concerns that MOOCs and similar approaches to online learning can exacerbate rather than reduce disparities in educational outcomes related to socioeconomic status.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hansen, John D -- Reich, Justin -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1245-8. doi: 10.1126/science.aab3782. Epub 2015 Dec 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard Graduate School of Education, Harvard University, Cambridge, MA 02138, USA. john_hansen@mail.harvard.edu. ; Office of Digital Learning, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785488" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Career Choice ; Certification/*methods ; Education, Distance/*methods ; Engineering/education ; Humans ; Internet ; Learning ; Mathematics/education ; *Online Systems ; Science/education ; *Social Class ; Students ; Technology/education ; United States ; Young Adult
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  • 52
    Publication Date: 2015-03-15
    Description: TREK-2 (KCNK10/K2P10), a two-pore domain potassium (K2P) channel, is gated by multiple stimuli such as stretch, fatty acids, and pH and by several drugs. However, the mechanisms that control channel gating are unclear. Here we present crystal structures of the human TREK-2 channel (up to 3.4 angstrom resolution) in two conformations and in complex with norfluoxetine, the active metabolite of fluoxetine (Prozac) and a state-dependent blocker of TREK channels. Norfluoxetine binds within intramembrane fenestrations found in only one of these two conformations. Channel activation by arachidonic acid and mechanical stretch involves conversion between these states through movement of the pore-lining helices. These results provide an explanation for TREK channel mechanosensitivity, regulation by diverse stimuli, and possible off-target effects of the serotonin reuptake inhibitor Prozac.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dong, Yin Yao -- Pike, Ashley C W -- Mackenzie, Alexandra -- McClenaghan, Conor -- Aryal, Prafulla -- Dong, Liang -- Quigley, Andrew -- Grieben, Mariana -- Goubin, Solenne -- Mukhopadhyay, Shubhashish -- Ruda, Gian Filippo -- Clausen, Michael V -- Cao, Lishuang -- Brennan, Paul E -- Burgess-Brown, Nicola A -- Sansom, Mark S P -- Tucker, Stephen J -- Carpenter, Elisabeth P -- 084655/Wellcome Trust/United Kingdom -- 092809/Z/10/Z/Wellcome Trust/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2015 Mar 13;347(6227):1256-9. doi: 10.1126/science.1261512.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK. ; Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK. Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK. ; Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK. OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK. ; Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK. OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK. Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK. ; Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK. Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, UK. ; Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK. ; Pfizer Neusentis, Granta Park, Cambridge CB21 6GS, UK. ; OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK. Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK. ; Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK. OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK. liz.carpenter@sgc.ox.ac.uk stephen.tucker@physics.ox.ac.uk. ; Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK. OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK. liz.carpenter@sgc.ox.ac.uk stephen.tucker@physics.ox.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25766236" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arachidonic Acid/pharmacology ; Binding Sites ; Crystallography, X-Ray ; Fluoxetine/analogs & derivatives/chemistry/metabolism/pharmacology ; Humans ; *Ion Channel Gating ; Models, Molecular ; Molecular Dynamics Simulation ; Molecular Sequence Data ; Potassium/metabolism ; Potassium Channels, Tandem Pore Domain/antagonists & ; inhibitors/*chemistry/metabolism ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary
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  • 53
    Publication Date: 2015-11-01
    Description: It is unknown whether the human immune system frequently mounts a T cell response against mutations expressed by common epithelial cancers. Using a next-generation sequencing approach combined with high-throughput immunologic screening, we demonstrated that tumor-infiltrating lymphocytes (TILs) from 9 out of 10 patients with metastatic gastrointestinal cancers contained CD4(+) and/or CD8(+) T cells that recognized one to three neo-epitopes derived from somatic mutations expressed by the patient's own tumor. There were no immunogenic epitopes shared between these patients. However, we identified in one patient a human leukocyte antigen-C*08:02-restricted T cell receptor from CD8(+) TILs that targeted the KRAS(G12D) hotspot driver mutation found in many human cancers. Thus, a high frequency of patients with common gastrointestinal cancers harbor immunogenic mutations that can potentially be exploited for the development of highly personalized immunotherapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tran, Eric -- Ahmadzadeh, Mojgan -- Lu, Yong-Chen -- Gros, Alena -- Turcotte, Simon -- Robbins, Paul F -- Gartner, Jared J -- Zheng, Zhili -- Li, Yong F -- Ray, Satyajit -- Wunderlich, John R -- Somerville, Robert P -- Rosenberg, Steven A -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 11;350(6266):1387-90. doi: 10.1126/science.aad1253. Epub 2015 Oct 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA. ; Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA. sar@mail.nih.gov.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26516200" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; CD8-Positive T-Lymphocytes/immunology ; Cell Line, Tumor ; Female ; Gastrointestinal Neoplasms/*genetics/*immunology/therapy ; HLA-C Antigens/genetics/immunology ; Humans ; Immunodominant Epitopes/genetics/immunology ; Immunotherapy/methods ; Lymphocytes, Tumor-Infiltrating/immunology ; Male ; Middle Aged ; Mutation ; Precision Medicine/methods ; Proto-Oncogene Proteins/genetics/immunology ; Receptors, Antigen, T-Cell/immunology ; ras Proteins/genetics/immunology
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  • 54
    Publication Date: 2015-11-07
    Description: Understanding the evolution of sex determination in plants requires identifying the mechanisms underlying the transition from monoecious plants, where male and female flowers coexist, to unisexual individuals found in dioecious species. We show that in melon and cucumber, the androecy gene controls female flower development and encodes a limiting enzyme of ethylene biosynthesis, ACS11. ACS11 is expressed in phloem cells connected to flowers programmed to become female, and ACS11 loss-of-function mutants lead to male plants (androecy). CmACS11 represses the expression of the male promoting gene CmWIP1 to control the development and the coexistence of male and female flowers in monoecious species. Because monoecy can lead to dioecy, we show how a combination of alleles of CmACS11 and CmWIP1 can create artificial dioecy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boualem, Adnane -- Troadec, Christelle -- Camps, Celine -- Lemhemdi, Afef -- Morin, Halima -- Sari, Marie-Agnes -- Fraenkel-Zagouri, Rina -- Kovalski, Irina -- Dogimont, Catherine -- Perl-Treves, Rafael -- Bendahmane, Abdelhafid -- New York, N.Y. -- Science. 2015 Nov 6;350(6261):688-91. doi: 10.1126/science.aac8370.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut National de la Recherche Agronomique (INRA), Institute of Plant Sciences Paris-Saclay, CNRS, Universite Paris-Sud, Universite d'Evry, Universite Paris-Diderot, Batiment 630, 91405, Orsay, France. ; Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Universite Rene Descartes, Paris, France. ; The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel. ; INRA, UR 1052, Unite de Genetique et d'Amelioration des Fruits et Legumes, BP 94, F-84143 Montfavet, France. ; Institut National de la Recherche Agronomique (INRA), Institute of Plant Sciences Paris-Saclay, CNRS, Universite Paris-Sud, Universite d'Evry, Universite Paris-Diderot, Batiment 630, 91405, Orsay, France. bendahm@evry.inra.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26542573" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; *Biological Evolution ; Cucumis sativus/enzymology/genetics/growth & development ; Cucurbitaceae/enzymology/genetics/*growth & development ; Ethylenes/biosynthesis ; Flowers/enzymology/genetics/*growth & development ; Genes, Plant/genetics/physiology ; Lyases/genetics/*physiology ; Molecular Sequence Data ; Phloem/enzymology/genetics/growth & development ; Plant Proteins/genetics/*physiology ; Sex Determination Processes/*genetics
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  • 55
    Publication Date: 2015-09-26
    Description: Cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS) detects intracellular DNA and signals through the adapter protein STING to initiate the antiviral response to DNA viruses. Whether DNA viruses can prevent activation of the cGAS-STING pathway remains largely unknown. Here, we identify the oncogenes of the DNA tumor viruses, including E7 from human papillomavirus (HPV) and E1A from adenovirus, as potent and specific inhibitors of the cGAS-STING pathway. We show that the LXCXE motif of these oncoproteins, which is essential for blockade of the retinoblastoma tumor suppressor, is also important for antagonizing DNA sensing. E1A and E7 bind to STING, and silencing of these oncogenes in human tumor cells restores the cGAS-STING pathway. Our findings reveal a host-virus conflict that may have shaped the evolution of viral oncogenes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lau, Laura -- Gray, Elizabeth E -- Brunette, Rebecca L -- Stetson, Daniel B -- New York, N.Y. -- Science. 2015 Oct 30;350(6260):568-71. doi: 10.1126/science.aab3291. Epub 2015 Sep 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, University of Washington School of Medicine, Seattle, WA 98109, USA. ; Department of Immunology, University of Washington School of Medicine, Seattle, WA 98109, USA. stetson@uw.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26405230" target="_blank"〉PubMed〈/a〉
    Keywords: Adenovirus E1A Proteins/chemistry/genetics/*metabolism ; Amino Acid Motifs ; Amino Acid Sequence ; DNA Tumor Viruses/*immunology ; DNA, Neoplasm/immunology ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Evolution, Molecular ; HEK293 Cells ; HeLa Cells ; Host-Pathogen Interactions ; Humans ; Membrane Proteins/*antagonists & inhibitors ; Metabolic Networks and Pathways ; Molecular Sequence Data ; Nucleotides, Cyclic/*antagonists & inhibitors ; Oncogene Proteins, Viral/chemistry/genetics/*metabolism ; Retinoblastoma Protein/antagonists & inhibitors ; *Tumor Escape
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  • 56
    Publication Date: 2015-09-12
    Description: Podophyllotoxin is the natural product precursor of the chemotherapeutic etoposide, yet only part of its biosynthetic pathway is known. We used transcriptome mining in Podophyllum hexandrum (mayapple) to identify biosynthetic genes in the podophyllotoxin pathway. We selected 29 candidate genes to combinatorially express in Nicotiana benthamiana (tobacco) and identified six pathway enzymes, including an oxoglutarate-dependent dioxygenase that closes the core cyclohexane ring of the aryltetralin scaffold. By coexpressing 10 genes in tobacco-these 6 plus 4 previously discovered-we reconstitute the pathway to (-)-4'-desmethylepipodophyllotoxin (the etoposide aglycone), a naturally occurring lignan that is the immediate precursor of etoposide and, unlike podophyllotoxin, a potent topoisomerase inhibitor. Our results enable production of the etoposide aglycone in tobacco and circumvent the need for cultivation of mayapple and semisynthetic epimerization and demethylation of podophyllotoxin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lau, Warren -- Sattely, Elizabeth S -- DP2 AT008321/AT/NCCIH NIH HHS/ -- R00 GM089985/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Sep 11;349(6253):1224-8. doi: 10.1126/science.aac7202.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA. ; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA. sattely@stanford.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26359402" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Biosynthetic Pathways/genetics ; Etoposide/*metabolism ; Gene Expression Regulation, Enzymologic ; Gene Expression Regulation, Plant ; *Genetic Engineering ; Methylation ; Mixed Function Oxygenases/genetics/*metabolism ; Molecular Sequence Data ; Podophyllotoxin/*analogs & derivatives/biosynthesis/*metabolism ; Podophyllum peltatum/*enzymology/genetics ; Tobacco/genetics/*metabolism ; Topoisomerase Inhibitors/*metabolism ; Transcriptome
    Print ISSN: 0036-8075
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  • 57
    Publication Date: 2015-09-12
    Description: Monoclonal antibodies directed against cytotoxic T lymphocyte-associated antigen-4 (CTLA-4), such as ipilimumab, yield considerable clinical benefit for patients with metastatic melanoma by inhibiting immune checkpoint activity, but clinical predictors of response to these therapies remain incompletely characterized. To investigate the roles of tumor-specific neoantigens and alterations in the tumor microenvironment in the response to ipilimumab, we analyzed whole exomes from pretreatment melanoma tumor biopsies and matching germline tissue samples from 110 patients. For 40 of these patients, we also obtained and analyzed transcriptome data from the pretreatment tumor samples. Overall mutational load, neoantigen load, and expression of cytolytic markers in the immune microenvironment were significantly associated with clinical benefit. However, no recurrent neoantigen peptide sequences predicted responder patient populations. Thus, detailed integrated molecular characterization of large patient cohorts may be needed to identify robust determinants of response and resistance to immune checkpoint inhibitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Allen, Eliezer M -- Miao, Diana -- Schilling, Bastian -- Shukla, Sachet A -- Blank, Christian -- Zimmer, Lisa -- Sucker, Antje -- Hillen, Uwe -- Foppen, Marnix H Geukes -- Goldinger, Simone M -- Utikal, Jochen -- Hassel, Jessica C -- Weide, Benjamin -- Kaehler, Katharina C -- Loquai, Carmen -- Mohr, Peter -- Gutzmer, Ralf -- Dummer, Reinhard -- Gabriel, Stacey -- Wu, Catherine J -- Schadendorf, Dirk -- Garraway, Levi A -- U54 HG003067/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2015 Oct 9;350(6257):207-11. doi: 10.1126/science.aad0095. Epub 2015 Sep 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. Center for Cancer Precision Medicine, Dana-Farber Cancer Institute, Boston, MA 02215, USA. ; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. ; Department of Dermatology, University Hospital, University Duisburg-Essen, 45147 Essen, Germany. German Cancer Consortium(DKTK), 69121 Heidelberg, Germany. ; Department of Medical Oncology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands. ; Department of Dermatology, University Hospital Zurich, 8091 Zurich, Switzerland. ; Skin Cancer Unit, German Cancer Research Center(DKTK), 69121 Heidelberg, Germany. Skin Cancer Unit, German Cancer Research Center(DKTK), 69121 Heidelberg, Germany. Department of Dermatology, Venerology, and Allergology, University Medical Center, Ruprecht-Karls University of Heidelberg, 68167 Mannheim, Germany. ; Department of Dermatology, University Hospital, Ruprecht-Karls University of Heidelberg, 69120 Heidelberg, Germany. ; Department of Dermatology, University Hospital Tubingen, 72076 Tubingen, Germany. ; Department of Dermatology, University Hospital Kiel, 24105 Kiel, Germany. ; Department of Dermatology, University Medical Center, 55131 Mainz, Germany. ; Department of Dermatology, Elbe-Kliniken, 21614 Buxtehude, Germany. ; Department of Dermatology and Allergy, Skin Cancer Center Hannover, Hannover Medical School, 30625 Hannover, Germany. ; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. ; Department of Dermatology, University Hospital, University Duisburg-Essen, 45147 Essen, Germany. German Cancer Consortium(DKTK), 69121 Heidelberg, Germany. levi_garraway@dfci.harvard.edu dirk.schadendorf@uk-essen.de. ; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. Center for Cancer Precision Medicine, Dana-Farber Cancer Institute, Boston, MA 02215, USA. levi_garraway@dfci.harvard.edu dirk.schadendorf@uk-essen.de.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26359337" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Antibodies, Monoclonal/*pharmacology/therapeutic use ; Antigens, Neoplasm/*genetics ; *Biomarkers, Pharmacological ; CTLA-4 Antigen/*antagonists & inhibitors ; Cell Cycle Checkpoints/genetics/immunology ; Cohort Studies ; DNA Mutational Analysis ; Drug Resistance, Neoplasm/genetics ; Exome ; Female ; Genomics ; HLA Antigens/genetics ; Humans ; Male ; Melanoma/*drug therapy/*genetics/secondary ; Middle Aged ; Mutation ; Skin Neoplasms/*drug therapy/*genetics/pathology ; Tumor Microenvironment/drug effects/immunology ; Young Adult
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  • 58
    Publication Date: 2015-09-01
    Description: DNA strand exchange plays a central role in genetic recombination across all kingdoms of life, but the physical basis for these reactions remains poorly defined. Using single-molecule imaging, we found that bacterial RecA and eukaryotic Rad51 and Dmc1 all stabilize strand exchange intermediates in precise three-nucleotide steps. Each step coincides with an energetic signature (0.3 kBT) that is conserved from bacteria to humans. Triplet recognition is strictly dependent on correct Watson-Crick pairing. Rad51, RecA, and Dmc1 can all step over mismatches, but only Dmc1 can stabilize mismatched triplets. This finding provides insight into why eukaryotes have evolved a meiosis-specific recombinase. We propose that canonical Watson-Crick base triplets serve as the fundamental unit of pairing interactions during DNA recombination.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4580133/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4580133/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Ja Yil -- Terakawa, Tsuyoshi -- Qi, Zhi -- Steinfeld, Justin B -- Redding, Sy -- Kwon, YoungHo -- Gaines, William A -- Zhao, Weixing -- Sung, Patrick -- Greene, Eric C -- CA146940/CA/NCI NIH HHS/ -- GM074739/GM/NIGMS NIH HHS/ -- R01 CA146940/CA/NCI NIH HHS/ -- R01 ES015252/ES/NIEHS NIH HHS/ -- R01 GM074739/GM/NIGMS NIH HHS/ -- R01ES015252/ES/NIEHS NIH HHS/ -- T32 GM007367/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Aug 28;349(6251):977-81. doi: 10.1126/science.aab2666.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA. ; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA. Department of Biophysics, Kyoto University, Sakyo, Kyoto, Japan. ; Department of Chemistry, Columbia University, New York, NY, USA. ; Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT, USA. ; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA. Howard Hughes Medical Institute, Columbia University, New York, NY, USA. ecg2108@cumc.columbia.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26315438" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Pairing ; Base Sequence ; Cell Cycle Proteins/chemistry/metabolism ; DNA/*chemistry/*metabolism ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/chemistry/metabolism ; Escherichia coli Proteins/chemistry/metabolism ; Evolution, Molecular ; *Homologous Recombination ; Humans ; Meiosis ; Molecular Dynamics Simulation ; Molecular Sequence Data ; Rad51 Recombinase/chemistry/*metabolism ; Rec A Recombinases/chemistry/*metabolism ; Recombinases/chemistry/*metabolism ; Saccharomyces cerevisiae Proteins/chemistry/*metabolism ; Thermodynamics
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  • 59
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2015-04-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fadri-Moskwik, Maria -- New York, N.Y. -- Science. 2015 Apr 10;348(6231):254. doi: 10.1126/science.348.6231.254.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Maria Fadri-Moskwik is a cellular and molecular biologist and most recently a clinical assistant professor at Washington State University, Spokane. For more on life and careers, visit ScienceCareers.org. Send your story to SciCareerEditor@aaas.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25859047" target="_blank"〉PubMed〈/a〉
    Keywords: *Career Choice ; Ecology ; *Marriage ; Molecular Biology
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  • 60
    Publication Date: 2015-11-07
    Description: Antibodies targeting CTLA-4 have been successfully used as cancer immunotherapy. We find that the antitumor effects of CTLA-4 blockade depend on distinct Bacteroides species. In mice and patients, T cell responses specific for B. thetaiotaomicron or B. fragilis were associated with the efficacy of CTLA-4 blockade. Tumors in antibiotic-treated or germ-free mice did not respond to CTLA blockade. This defect was overcome by gavage with B. fragilis, by immunization with B. fragilis polysaccharides, or by adoptive transfer of B. fragilis-specific T cells. Fecal microbial transplantation from humans to mice confirmed that treatment of melanoma patients with antibodies against CTLA-4 favored the outgrowth of B. fragilis with anticancer properties. This study reveals a key role for Bacteroidales in the immunostimulatory effects of CTLA-4 blockade.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721659/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721659/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vetizou, Marie -- Pitt, Jonathan M -- Daillere, Romain -- Lepage, Patricia -- Waldschmitt, Nadine -- Flament, Caroline -- Rusakiewicz, Sylvie -- Routy, Bertrand -- Roberti, Maria P -- Duong, Connie P M -- Poirier-Colame, Vichnou -- Roux, Antoine -- Becharef, Sonia -- Formenti, Silvia -- Golden, Encouse -- Cording, Sascha -- Eberl, Gerard -- Schlitzer, Andreas -- Ginhoux, Florent -- Mani, Sridhar -- Yamazaki, Takahiro -- Jacquelot, Nicolas -- Enot, David P -- Berard, Marion -- Nigou, Jerome -- Opolon, Paule -- Eggermont, Alexander -- Woerther, Paul-Louis -- Chachaty, Elisabeth -- Chaput, Nathalie -- Robert, Caroline -- Mateus, Christina -- Kroemer, Guido -- Raoult, Didier -- Boneca, Ivo Gomperts -- Carbonnel, Franck -- Chamaillard, Mathias -- Zitvogel, Laurence -- R01 CA161879/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2015 Nov 27;350(6264):1079-84. doi: 10.1126/science.aad1329. Epub 2015 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. University of Paris Sud XI, Kremlin-Bicetre, France. ; Institut National de la Recherche Agronomique (INRA), Micalis-UMR1319, 78360 Jouy-en-Josas, France. ; University of Lille, CNRS, INSERM, Centre Hospitalier Regional Universitaire de Lille, Institut Pasteur de Lille, U1019, UMR 8204, Centre d'Infection et d'Immunite de Lille (CIIL), F-59000 Lille, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. Center of Clinical Investigations in Biotherapies of Cancer 1428, Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. University of Paris Sud XI, Kremlin-Bicetre, France. Center of Clinical Investigations in Biotherapies of Cancer 1428, Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. Universite Paris Descartes, Sorbonne Paris Cite, Paris, France. ; Department of Radiation Oncology, New York University, New York, NY, USA. ; Microenvironment and Immunity Unit, Institut Pasteur, Paris, France. ; Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore. ; Department of Genetics and Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. Universite Paris Descartes, Sorbonne Paris Cite, Paris, France. Metabolomics Platform, GRCC, Villejuif, France. ; Animalerie Centrale, Institut Pasteur, Paris, France. ; Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale (IPBS), Toulouse, France. Universite de Toulouse, Universite Paul Sabatier, IPBS, F-31077 Toulouse, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. Department of Medical Oncology, Institut Gustave Roussy, Villejuif, France. ; Service de microbiologie, GRCC, Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. Laboratory of Immunomonitoring in Oncology, UMS 3655 CNRS/US 23 INSERM, GRCC, Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. Department of Medical Oncology, Institut Gustave Roussy, Villejuif, France. INSERM U981, GRCC, Villejuif, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. Department of Medical Oncology, Institut Gustave Roussy, Villejuif, France. ; Universite Paris Descartes, Sorbonne Paris Cite, Paris, France. Metabolomics Platform, GRCC, Villejuif, France. INSERM U848, Villejuif, France. Equipe 11 Labellisee-Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France. Pole de Biologie, Hopital Europeen Georges Pompidou, Assistance Publique-Hopitaux de Paris, Paris, France. ; Unite des Rickettsies, Faculte de Medecine, Universite de la Mediterranee, Marseille, France. ; Institut Pasteur, Unit of Biology and Genetics of the Bacterial Cell Wall, Paris, France. INSERM, Equipe Avenir, Paris, France. ; University of Paris Sud XI, Kremlin-Bicetre, France. Gastroenterology Department, Hopital Bicetre, Assistance Publique-Hopitaux de Paris, Paris, France. ; Institut de Cancerologie Gustave Roussy Cancer Campus (GRCC), 114 rue Edouard Vaillant, 94805 Villejuif, France. INSERM U1015, GRCC, Villejuif, France. University of Paris Sud XI, Kremlin-Bicetre, France. Center of Clinical Investigations in Biotherapies of Cancer 1428, Villejuif, France. laurence.zitvogel@gustaveroussy.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26541610" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Animals ; Anti-Bacterial Agents/pharmacology ; Antibodies, Monoclonal/adverse effects/*therapeutic use ; Bacteroides/*immunology ; CTLA-4 Antigen/*antagonists & inhibitors/immunology ; Dysbiosis/immunology ; Fecal Microbiota Transplantation ; Female ; Gastrointestinal Microbiome/drug effects/*immunology ; Germ-Free Life/immunology ; Humans ; Immunologic Memory ; Immunotherapy ; Intestines/immunology/microbiology ; Male ; Melanoma/*therapy ; Mice ; Mice, Inbred C57BL ; Middle Aged ; Skin Neoplasms/*therapy ; T-Lymphocytes/immunology
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  • 61
    Publication Date: 2015-01-13
    Description: NADPH/NADP(+) (the reduced form of NADP(+)/nicotinamide adenine dinucleotide phosphate) homeostasis is critical for countering oxidative stress in cells. Nicotinamide nucleotide transhydrogenase (TH), a membrane enzyme present in both bacteria and mitochondria, couples the proton motive force to the generation of NADPH. We present the 2.8 A crystal structure of the transmembrane proton channel domain of TH from Thermus thermophilus and the 6.9 A crystal structure of the entire enzyme (holo-TH). The membrane domain crystallized as a symmetric dimer, with each protomer containing a putative proton channel. The holo-TH is a highly asymmetric dimer with the NADP(H)-binding domain (dIII) in two different orientations. This unusual arrangement suggests a catalytic mechanism in which the two copies of dIII alternatively function in proton translocation and hydride transfer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479213/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479213/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leung, Josephine H -- Schurig-Briccio, Lici A -- Yamaguchi, Mutsuo -- Moeller, Arne -- Speir, Jeffrey A -- Gennis, Robert B -- Stout, Charles D -- 1R01GM103838-01A1/GM/NIGMS NIH HHS/ -- 5R01GM061545/GM/NIGMS NIH HHS/ -- GM073197/GM/NIGMS NIH HHS/ -- GM095600/GM/NIGMS NIH HHS/ -- P41 GM103310/GM/NIGMS NIH HHS/ -- P41GM103310/GM/NIGMS NIH HHS/ -- R01 GM061545/GM/NIGMS NIH HHS/ -- R01 GM095600/GM/NIGMS NIH HHS/ -- R01 GM103838/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Jan 9;347(6218):178-81. doi: 10.1126/science.1260451.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. ; Department of Biochemistry, University of Illinois, Urbana, IL 61801, USA. ; National Resource for Automated Molecular Microscopy, The Scripps Research Institute, La Jolla, CA 92037, USA. ; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. dave@scripps.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25574024" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Crystallography, X-Ray ; Molecular Sequence Data ; NADP Transhydrogenases/*chemistry ; Protein Multimerization ; Protein Structure, Tertiary ; *Protons ; Thermus thermophilus/enzymology
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  • 62
    Publication Date: 2015-05-30
    Description: Although people may endorse egalitarianism and tolerance, social biases can remain operative and drive harmful actions in an unconscious manner. Here, we investigated training to reduce implicit racial and gender bias. Forty participants processed counterstereotype information paired with one sound for each type of bias. Biases were reduced immediately after training. During subsequent slow-wave sleep, one sound was unobtrusively presented to each participant, repeatedly, to reactivate one type of training. Corresponding bias reductions were fortified in comparison with the social bias not externally reactivated during sleep. This advantage remained 1 week later, the magnitude of which was associated with time in slow-wave and rapid-eye-movement sleep after training. We conclude that memory reactivation during sleep enhances counterstereotype training and that maintaining a bias reduction is sleep-dependent.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4467959/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4467959/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Xiaoqing -- Antony, James W -- Creery, Jessica D -- Vargas, Iliana M -- Bodenhausen, Galen V -- Paller, Ken A -- F31 MH100958/MH/NIMH NIH HHS/ -- F31-MH100958/MH/NIMH NIH HHS/ -- T32 AG020506/AG/NIA NIH HHS/ -- T32-AG020418/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2015 May 29;348(6238):1013-5. doi: 10.1126/science.aaa3841.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, Northwestern University, Evanston, IL 60208, USA. Department of Psychology, University of Texas at Austin, Austin, TX 78712, USA. ; Department of Psychology, Northwestern University, Evanston, IL 60208, USA. Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA. ; Department of Psychology, Northwestern University, Evanston, IL 60208, USA. ; Department of Psychology, Northwestern University, Evanston, IL 60208, USA. kap@northwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26023137" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Cognition ; Continental Population Groups/psychology ; Female ; Humans ; Male ; Memory/*physiology ; Prejudice/*psychology ; Sex Factors ; Sleep, REM/*physiology ; Young Adult
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  • 63
    Publication Date: 2015-01-31
    Description: The 18-kilodalton translocator protein (TSPO), proposed to be a key player in cholesterol transport into mitochondria, is highly expressed in steroidogenic tissues, metastatic cancer, and inflammatory and neurological diseases such as Alzheimer's and Parkinson's. TSPO ligands, including benzodiazepine drugs, are implicated in regulating apoptosis and are extensively used in diagnostic imaging. We report crystal structures (at 1.8, 2.4, and 2.5 angstrom resolution) of TSPO from Rhodobacter sphaeroides and a mutant that mimics the human Ala(147)--〉Thr(147) polymorphism associated with psychiatric disorders and reduced pregnenolone production. Crystals obtained in the lipidic cubic phase reveal the binding site of an endogenous porphyrin ligand and conformational effects of the mutation. The three crystal structures show the same tightly interacting dimer and provide insights into the controversial physiological role of TSPO and how the mutation affects cholesterol binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Fei -- Liu, Jian -- Zheng, Yi -- Garavito, R Michael -- Ferguson-Miller, Shelagh -- ACB-12002/PHS HHS/ -- AGM-12006/PHS HHS/ -- GM094625/GM/NIGMS NIH HHS/ -- GM26916/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Jan 30;347(6221):555-8. doi: 10.1126/science.1260590.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA. ; Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA. fergus20@msu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25635101" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/*chemistry/*metabolism ; Binding Sites ; Cholesterol/metabolism ; Crystallography, X-Ray ; Humans ; Hydrogen Bonding ; Isoquinolines/metabolism ; Ligands ; Membrane Transport Proteins/*chemistry/*metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins/chemistry ; Polymorphism, Single Nucleotide ; Porphyrins/metabolism ; Protein Conformation ; Protein Multimerization ; Protein Structure, Secondary ; Protoporphyrins/metabolism ; Receptors, GABA/chemistry/genetics ; Rhodobacter sphaeroides/*chemistry
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  • 64
    Publication Date: 2015-09-19
    Description: We studied the distributional preferences of an elite cadre of Yale Law School students, a group that will assume positions of power in U.S. society. Our experimental design allows us to test whether redistributive decisions are consistent with utility maximization and to decompose underlying preferences into two qualitatively different tradeoffs: fair-mindedness versus self-interest, and equality versus efficiency. Yale Law School subjects are more consistent than subjects drawn from the American Life Panel, a diverse sample of Americans. Relative to the American Life Panel, Yale Law School subjects are also less fair-minded and substantially more efficiency-focused. We further show that our measure of equality-efficiency tradeoffs predicts Yale Law School students' career choices: Equality-minded subjects are more likely to be employed at nonprofit organizations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisman, Raymond -- Jakiela, Pamela -- Kariv, Shachar -- Markovits, Daniel -- New York, N.Y. -- Science. 2015 Sep 18;349(6254):aab0096. doi: 10.1126/science.aab0096.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Economics, Boston University, Boston, MA, USA. rfisman@bu.edu. ; Department of Agricultural and Resource Economics, University of Maryland, College Park, MD, USA. ; Department of Economics, University of California, Berkeley, Berkely, CA, USA. ; Yale Law School, Yale University, New Haven, CT, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26383958" target="_blank"〉PubMed〈/a〉
    Keywords: Administrative Personnel/*psychology ; Adult ; Attitude ; *Career Choice ; Employment ; Female ; Humans ; Jurisprudence ; Organizations, Nonprofit ; *Power (Psychology) ; Public Opinion ; *Resource Allocation ; Social Justice/*psychology ; Students ; United States
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  • 65
    Publication Date: 2015-06-06
    Description: Retroviruses depend on self-assembly of their capsid proteins (core particle) to yield infectious mature virions. Despite the essential role of the retroviral core, its high polymorphism has hindered high-resolution structural analyses. Here, we report the x-ray structure of the native capsid (CA) protein from bovine leukemia virus. CA is organized as hexamers that deviate substantially from sixfold symmetry, yet adjust to make two-dimensional pseudohexagonal arrays that mimic mature retroviral cores. Intra- and interhexameric quasi-equivalent contacts are uncovered, with flexible trimeric lateral contacts among hexamers, yet preserving very similar dimeric interfaces making the lattice. The conformation of each capsid subunit in the hexamer is therefore dictated by long-range interactions, revealing how the hexamers can also assemble into closed core particles, a relevant feature of retrovirus biology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Obal, G -- Trajtenberg, F -- Carrion, F -- Tome, L -- Larrieux, N -- Zhang, X -- Pritsch, O -- Buschiazzo, A -- New York, N.Y. -- Science. 2015 Jul 3;349(6243):95-8. doi: 10.1126/science.aaa5182. Epub 2015 Jun 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Pasteur de Montevideo, Unit of Protein Biophysics, Mataojo 2020, 11400, Montevideo, Uruguay. Departamento de Inmunobiologia, Facultad de Medicina, Universidad de la Republica, Avenida General Flores 2125, 11800, Montevideo, Uruguay. ; Institut Pasteur de Montevideo, Unit of Protein Crystallography, Mataojo 2020, 11400, Montevideo, Uruguay. ; Institut Pasteur de Montevideo, Unit of Protein Biophysics, Mataojo 2020, 11400, Montevideo, Uruguay. ; Institut Pasteur, Unite de Virologie Structurale, Departement de Virologie and CNRS Unite Mixte de Recherche 3569, 28, Rue du Docteur Roux, 75015, Paris, France. ; Institut Pasteur de Montevideo, Unit of Protein Biophysics, Mataojo 2020, 11400, Montevideo, Uruguay. Departamento de Inmunobiologia, Facultad de Medicina, Universidad de la Republica, Avenida General Flores 2125, 11800, Montevideo, Uruguay. pritsch@pasteur.edu.uy alebus@pasteur.edu.uy. ; Institut Pasteur de Montevideo, Unit of Protein Crystallography, Mataojo 2020, 11400, Montevideo, Uruguay. Institut Pasteur, Department of Structural Biology and Chemistry, 25, Rue du Dr Roux, 75015, Paris, France. pritsch@pasteur.edu.uy alebus@pasteur.edu.uy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26044299" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Capsid/*chemistry ; Capsid Proteins/*chemistry/genetics ; Cattle ; Crystallography, X-Ray ; Leukemia Virus, Bovine/*chemistry/genetics ; Molecular Sequence Data ; Mutation ; Protein Multimerization ; Protein Structure, Secondary
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  • 66
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2015-12-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fraser, Barbara -- New York, N.Y. -- Science. 2015 Dec 11;350(6266):1304. doi: 10.1126/science.350.6266.1304.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26659035" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Anthropology ; Brazil ; Child ; *Communicable Disease Control ; Communicable Diseases/*immunology ; Conflict (Psychology) ; *Epidemiological Monitoring ; Health ; Humans ; Immunity ; Male ; *Population Groups ; Rivers ; *Social Isolation
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  • 67
    Publication Date: 2015-03-07
    Description: Democracies depend on the support of the general population, but little is known about the determinants of this support. We investigated whether support for democracy increases with the length of time spent under the system and whether preferences are thus affected by the political system. Relying on 380,000 individual-level observations from 104 countries over the years 1994 to 2013, and exploiting individual-level variation within a country and a given year in the length of time spent under democracy, we find evidence that political preferences are endogenous. For new democracies, our findings imply that popular support needs time to develop. For example, the effect of around 8.5 more years of democratic experience corresponds to the difference in support for democracy between primary and secondary education.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuchs-Schundeln, Nicola -- Schundeln, Matthias -- New York, N.Y. -- Science. 2015 Mar 6;347(6226):1145-8. doi: 10.1126/science.aaa0880.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Goethe University Frankfurt, 60320 Frankfurt, Germany. fuchs@wiwi.uni-frankfurt.de schuendeln@wiwi.uni-frankfurt.de.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25745172" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Child ; *Democracy ; Educational Status ; Female ; Humans ; *Individuality ; Male ; Middle Aged ; *Social Values ; Young Adult
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  • 68
    Publication Date: 2015-06-27
    Description: Cardiac progenitor cells are multipotent and give rise to cardiac endothelium, smooth muscle, and cardiomyocytes. Here, we define and characterize the cardiomyoblast intermediate that is committed to the cardiomyocyte fate, and we characterize the niche signals that regulate commitment. Cardiomyoblasts express Hopx, which functions to coordinate local Bmp signals to inhibit the Wnt pathway, thus promoting cardiomyogenesis. Hopx integrates Bmp and Wnt signaling by physically interacting with activated Smads and repressing Wnt genes. The identification of the committed cardiomyoblast that retains proliferative potential will inform cardiac regenerative therapeutics. In addition, Bmp signals characterize adult stem cell niches in other tissues where Hopx-mediated inhibition of Wnt is likely to contribute to stem cell quiescence and to explain the role of Hopx as a tumor suppressor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jain, Rajan -- Li, Deqiang -- Gupta, Mudit -- Manderfield, Lauren J -- Ifkovits, Jamie L -- Wang, Qiaohong -- Liu, Feiyan -- Liu, Ying -- Poleshko, Andrey -- Padmanabhan, Arun -- Raum, Jeffrey C -- Li, Li -- Morrisey, Edward E -- Lu, Min Min -- Won, Kyoung-Jae -- Epstein, Jonathan A -- 5-T32-GM-007170/GM/NIGMS NIH HHS/ -- K08 HL119553/HL/NHLBI NIH HHS/ -- K08 HL119553-02/HL/NHLBI NIH HHS/ -- R01 HL071546/HL/NHLBI NIH HHS/ -- U01 HL100405/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2015 Jun 26;348(6242):aaa6071. doi: 10.1126/science.aaa6071.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, Penn Cardiovascular Institute, Institute of Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. ; Department of Genetics, Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. ; Department of Cell and Developmental Biology, Penn Cardiovascular Institute, Institute of Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. epsteinj@upenn.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26113728" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bone Morphogenetic Proteins/genetics/*metabolism ; Cell Lineage/genetics ; Gene Expression ; *Gene Expression Regulation, Developmental ; Heart/*embryology ; Homeodomain Proteins/genetics/*metabolism ; Mice ; Mice, Mutant Strains ; Molecular Sequence Data ; Muscle, Smooth/cytology/metabolism ; Myoblasts, Cardiac/cytology/*metabolism ; Organogenesis/*genetics ; Stem Cell Niche/genetics/physiology ; Tumor Suppressor Proteins/genetics/*metabolism ; Wnt Signaling Pathway/*genetics
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  • 69
    Publication Date: 2015-01-09
    Description: The mechanistic target of rapamycin complex 1 (mTORC1) protein kinase is a master growth regulator that responds to multiple environmental cues. Amino acids stimulate, in a Rag-, Ragulator-, and vacuolar adenosine triphosphatase-dependent fashion, the translocation of mTORC1 to the lysosomal surface, where it interacts with its activator Rheb. Here, we identify SLC38A9, an uncharacterized protein with sequence similarity to amino acid transporters, as a lysosomal transmembrane protein that interacts with the Rag guanosine triphosphatases (GTPases) and Ragulator in an amino acid-sensitive fashion. SLC38A9 transports arginine with a high Michaelis constant, and loss of SLC38A9 represses mTORC1 activation by amino acids, particularly arginine. Overexpression of SLC38A9 or just its Ragulator-binding domain makes mTORC1 signaling insensitive to amino acid starvation but not to Rag activity. Thus, SLC38A9 functions upstream of the Rag GTPases and is an excellent candidate for being an arginine sensor for the mTORC1 pathway.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295826/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295826/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Shuyu -- Tsun, Zhi-Yang -- Wolfson, Rachel L -- Shen, Kuang -- Wyant, Gregory A -- Plovanich, Molly E -- Yuan, Elizabeth D -- Jones, Tony D -- Chantranupong, Lynne -- Comb, William -- Wang, Tim -- Bar-Peled, Liron -- Zoncu, Roberto -- Straub, Christoph -- Kim, Choah -- Park, Jiwon -- Sabatini, Bernardo L -- Sabatini, David M -- AI47389/AI/NIAID NIH HHS/ -- F30 CA180754/CA/NCI NIH HHS/ -- F31 AG044064/AG/NIA NIH HHS/ -- F31 CA180271/CA/NCI NIH HHS/ -- R01 CA103866/CA/NCI NIH HHS/ -- R37 AI047389/AI/NIAID NIH HHS/ -- T32 GM007287/GM/NIGMS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Jan 9;347(6218):188-94. doi: 10.1126/science.1257132. Epub 2015 Jan 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research and Massachusetts Institute of Technology, Department of Biology, 9 Cambridge Center, Cambridge, MA 02142, USA. Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Koch Institute for Integrative Cancer Research, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. Broad Institute of Harvard and Massachusetts Institute of Technology, 7 Cambridge Center, Cambridge, MA 02142, USA. ; Harvard Medical School, 260 Longwood Avenue, Boston, MA 02115, USA. ; Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA. ; Whitehead Institute for Biomedical Research and Massachusetts Institute of Technology, Department of Biology, 9 Cambridge Center, Cambridge, MA 02142, USA. Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Koch Institute for Integrative Cancer Research, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. Broad Institute of Harvard and Massachusetts Institute of Technology, 7 Cambridge Center, Cambridge, MA 02142, USA. sabatini@wi.mit.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25567906" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Transport Systems/chemistry/genetics/*metabolism ; Arginine/deficiency/*metabolism ; HEK293 Cells ; Humans ; Lysosomes/*enzymology ; Molecular Sequence Data ; Monomeric GTP-Binding Proteins/*metabolism ; Multiprotein Complexes/*metabolism ; Protein Structure, Tertiary ; Signal Transduction ; TOR Serine-Threonine Kinases/*metabolism
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  • 70
    Publication Date: 2015-02-01
    Description: During virus infection, the adaptor proteins MAVS and STING transduce signals from the cytosolic nucleic acid sensors RIG-I and cGAS, respectively, to induce type I interferons (IFNs) and other antiviral molecules. Here we show that MAVS and STING harbor two conserved serine and threonine clusters that are phosphorylated by the kinases IKK and/or TBK1 in response to stimulation. Phosphorylated MAVS and STING then bind to a positively charged surface of interferon regulatory factor 3 (IRF3) and thereby recruit IRF3 for its phosphorylation and activation by TBK1. We further show that TRIF, an adaptor protein in Toll-like receptor signaling, activates IRF3 through a similar phosphorylation-dependent mechanism. These results reveal that phosphorylation of innate adaptor proteins is an essential and conserved mechanism that selectively recruits IRF3 to activate the type I IFN pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Siqi -- Cai, Xin -- Wu, Jiaxi -- Cong, Qian -- Chen, Xiang -- Li, Tuo -- Du, Fenghe -- Ren, Junyao -- Wu, You-Tong -- Grishin, Nick V -- Chen, Zhijian J -- AI-93967/AI/NIAID NIH HHS/ -- GM-094575/GM/NIGMS NIH HHS/ -- GM-63692/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Mar 13;347(6227):aaa2630. doi: 10.1126/science.aaa2630. Epub 2015 Jan 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. ; Departments of Biophysics and Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. ; Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. Howard Hughes Medical Institute (HHMI), University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. ; Departments of Biophysics and Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. Howard Hughes Medical Institute (HHMI), University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. ; Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. Howard Hughes Medical Institute (HHMI), University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. zhijian.chen@utsouthwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25636800" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/chemistry/*metabolism ; Adaptor Proteins, Vesicular Transport/chemistry/*metabolism ; Amino Acid Sequence ; Animals ; Cell Line ; Humans ; I-kappa B Kinase/metabolism ; Interferon Regulatory Factor-3/chemistry/*metabolism ; Interferon-alpha/biosynthesis ; Interferon-beta/biosynthesis ; Membrane Proteins/chemistry/*metabolism ; Mice ; Molecular Sequence Data ; Phosphorylation ; Protein Binding ; Protein Multimerization ; Protein-Serine-Threonine Kinases/metabolism ; Recombinant Proteins/metabolism ; Sendai virus/physiology ; Serine/metabolism ; Signal Transduction ; Ubiquitination ; Vesiculovirus/physiology
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  • 71
    Publication Date: 2015-12-19
    Description: Voltage-gated sodium (Nav) channels propagate action potentials in excitable cells. Accordingly, Nav channels are therapeutic targets for many cardiovascular and neurological disorders. Selective inhibitors have been challenging to design because the nine mammalian Nav channel isoforms share high sequence identity and remain recalcitrant to high-resolution structural studies. Targeting the human Nav1.7 channel involved in pain perception, we present a protein-engineering strategy that has allowed us to determine crystal structures of a novel receptor site in complex with isoform-selective antagonists. GX-936 and related inhibitors bind to the activated state of voltage-sensor domain IV (VSD4), where their anionic aryl sulfonamide warhead engages the fourth arginine gating charge on the S4 helix. By opposing VSD4 deactivation, these compounds inhibit Nav1.7 through a voltage-sensor trapping mechanism, likely by stabilizing inactivated states of the channel. Residues from the S2 and S3 helices are key determinants of isoform selectivity, and bound phospholipids implicate the membrane as a modulator of channel function and pharmacology. Our results help to elucidate the molecular basis of voltage sensing and establish structural blueprints to design selective Nav channel antagonists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahuja, Shivani -- Mukund, Susmith -- Deng, Lunbin -- Khakh, Kuldip -- Chang, Elaine -- Ho, Hoangdung -- Shriver, Stephanie -- Young, Clint -- Lin, Sophia -- Johnson, J P Jr -- Wu, Ping -- Li, Jun -- Coons, Mary -- Tam, Christine -- Brillantes, Bobby -- Sampang, Honorio -- Mortara, Kyle -- Bowman, Krista K -- Clark, Kevin R -- Estevez, Alberto -- Xie, Zhiwei -- Verschoof, Henry -- Grimwood, Michael -- Dehnhardt, Christoph -- Andrez, Jean-Christophe -- Focken, Thilo -- Sutherlin, Daniel P -- Safina, Brian S -- Starovasnik, Melissa A -- Ortwine, Daniel F -- Franke, Yvonne -- Cohen, Charles J -- Hackos, David H -- Koth, Christopher M -- Payandeh, Jian -- New York, N.Y. -- Science. 2015 Dec 18;350(6267):aac5464. doi: 10.1126/science.aac5464.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Genentech Inc., South San Francisco, CA 94080, USA. ; Department of Neuroscience, Genentech Inc., South San Francisco, CA 94080, USA. ; Department of Biology, Xenon Pharmaceuticals Inc., Burnaby, British Columbia, V5G 4W8, Canada. ; Department of Discovery Chemistry, Genentech Inc., South San Francisco, CA 94080, USA. ; Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA 94080, USA. ; Department of Chemistry, Xenon Pharmaceuticals Inc., Burnaby, British Columbia, V5G 4W8, Canada. ; Department of Neuroscience, Genentech Inc., South San Francisco, CA 94080, USA. hackos.david@gene.com koth.christopher@gene.com payandeh.jian@gene.com. ; Department of Structural Biology, Genentech Inc., South San Francisco, CA 94080, USA. hackos.david@gene.com koth.christopher@gene.com payandeh.jian@gene.com.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26680203" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Membrane/chemistry ; Crystallization/methods ; Crystallography, X-Ray ; DNA Mutational Analysis ; Humans ; Models, Molecular ; Molecular Sequence Data ; NAV1.7 Voltage-Gated Sodium Channel/*chemistry/genetics ; Pain Perception/drug effects ; Protein Engineering ; Protein Isoforms/antagonists & inhibitors/chemistry ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Sodium Channel Blockers/*chemistry/*pharmacology ; Sulfonamides/*chemistry/*pharmacology ; Thiadiazoles/*chemistry/*pharmacology
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  • 72
    Publication Date: 2015-06-13
    Description: The spindle checkpoint of the cell division cycle senses kinetochores that are not attached to microtubules and prevents precocious onset of anaphase, which can lead to aneuploidy. The nuclear division cycle 80 complex (Ndc80C) is a major microtubule receptor at the kinetochore. Ndc80C also mediates the kinetochore recruitment of checkpoint proteins. We found that the checkpoint protein kinase monopolar spindle 1 (Mps1) directly bound to Ndc80C through two independent interactions. Both interactions involved the microtubule-binding surfaces of Ndc80C and were directly inhibited in the presence of microtubules. Elimination of one such interaction in human cells caused checkpoint defects expected from a failure to detect unattached kinetochores. Competition between Mps1 and microtubules for Ndc80C binding thus constitutes a direct mechanism for the detection of unattached kinetochores.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ji, Zhejian -- Gao, Haishan -- Yu, Hongtao -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Jun 12;348(6240):1260-4. doi: 10.1126/science.aaa4029.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Pharmacology, University of Texas Southwestern Medical Center, 6001 Forest Park Road, Dallas, TX 74390, USA. ; Howard Hughes Medical Institute, Department of Pharmacology, University of Texas Southwestern Medical Center, 6001 Forest Park Road, Dallas, TX 74390, USA. hongtao.yu@utsouthwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26068854" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding, Competitive ; *Cell Cycle ; Cell Cycle Proteins/genetics/*metabolism ; HeLa Cells ; Humans ; Kinetochores/*metabolism ; Microtubules/*metabolism ; Molecular Sequence Data ; Nuclear Proteins/*metabolism ; Protein Binding ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Protein-Tyrosine Kinases/genetics/*metabolism
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  • 73
    Publication Date: 2015-07-25
    Description: Lipid transfer between cell membrane bilayers at contacts between the endoplasmic reticulum (ER) and other membranes help to maintain membrane lipid homeostasis. We found that two similar ER integral membrane proteins, oxysterol-binding protein (OSBP)-related protein 5 (ORP5) and ORP8, tethered the ER to the plasma membrane (PM) via the interaction of their pleckstrin homology domains with phosphatidylinositol 4-phosphate (PI4P) in this membrane. Their OSBP-related domains (ORDs) harbored either PI4P or phosphatidylserine (PS) and exchanged these lipids between bilayers. Gain- and loss-of-function experiments showed that ORP5 and ORP8 could mediate PI4P/PS countertransport between the ER and the PM, thus delivering PI4P to the ER-localized PI4P phosphatase Sac1 for degradation and PS from the ER to the PM. This exchange helps to control plasma membrane PI4P levels and selectively enrich PS in the PM.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4638224/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4638224/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chung, Jeeyun -- Torta, Federico -- Masai, Kaori -- Lucast, Louise -- Czapla, Heather -- Tanner, Lukas B -- Narayanaswamy, Pradeep -- Wenk, Markus R -- Nakatsu, Fubito -- De Camilli, Pietro -- DA018343/DA/NIDA NIH HHS/ -- DK082700/DK/NIDDK NIH HHS/ -- DK45735/DK/NIDDK NIH HHS/ -- P30 DA018343/DA/NIDA NIH HHS/ -- P30 DK045735/DK/NIDDK NIH HHS/ -- R01 DK082700/DK/NIDDK NIH HHS/ -- R37 NS036251/NS/NINDS NIH HHS/ -- R37NS036251/NS/NINDS NIH HHS/ -- T32 GM007223/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Jul 24;349(6246):428-32. doi: 10.1126/science.aab1370.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Howard Hughes Medical Institute, Kavli Institute for Neuroscience, and Program for Cellular Neuroscience, Neurodegeneration, and Repair, Yale School of Medicine, New Haven, CT 06520, USA. ; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 117456 Singapore. ; Department of Cell Biology, Howard Hughes Medical Institute, Kavli Institute for Neuroscience, and Program for Cellular Neuroscience, Neurodegeneration, and Repair, Yale School of Medicine, New Haven, CT 06520, USA. pietro.decamilli@yale.edu nakatsu@med.niigata-u.ac.jp.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26206935" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Biological Transport ; Cell Membrane/*metabolism ; Endoplasmic Reticulum/*metabolism ; Gene Knockout Techniques ; HeLa Cells ; Humans ; Molecular Sequence Data ; Phosphatidylinositol Phosphates/*metabolism ; Phosphatidylserines/*metabolism ; Protein Structure, Tertiary ; Receptors, Steroid/chemistry/genetics/*metabolism
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  • 74
    Publication Date: 2015-03-15
    Description: Rgs2, a regulator of G proteins, lowers blood pressure by decreasing signaling through Galphaq. Human patients expressing Met-Leu-Rgs2 (ML-Rgs2) or Met-Arg-Rgs2 (MR-Rgs2) are hypertensive relative to people expressing wild-type Met-Gln-Rgs2 (MQ-Rgs2). We found that wild-type MQ-Rgs2 and its mutant, MR-Rgs2, were destroyed by the Ac/N-end rule pathway, which recognizes N(alpha)-terminally acetylated (Nt-acetylated) proteins. The shortest-lived mutant, ML-Rgs2, was targeted by both the Ac/N-end rule and Arg/N-end rule pathways. The latter pathway recognizes unacetylated N-terminal residues. Thus, the Nt-acetylated Ac-MX-Rgs2 (X = Arg, Gln, Leu) proteins are specific substrates of the mammalian Ac/N-end rule pathway. Furthermore, the Ac/N-degron of Ac-MQ-Rgs2 was conditional, and Teb4, an endoplasmic reticulum (ER) membrane-embedded ubiquitin ligase, was able to regulate G protein signaling by targeting Ac-MX-Rgs2 proteins for degradation through their N(alpha)-terminal acetyl group.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4748709/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4748709/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, Sang-Eun -- Kim, Jeong-Mok -- Seok, Ok-Hee -- Cho, Hanna -- Wadas, Brandon -- Kim, Seon-Young -- Varshavsky, Alexander -- Hwang, Cheol-Sang -- DK039520/DK/NIDDK NIH HHS/ -- GM031530/GM/NIGMS NIH HHS/ -- R01 DK039520/DK/NIDDK NIH HHS/ -- R01 GM031530/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Mar 13;347(6227):1249-52. doi: 10.1126/science.aaa3844.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, South Korea. ; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA. ; Medical Genomics Research Center, KRIBB, Daejeon, South Korea. Department of Functional Genomics, University of Science and Technology, Daejeon, South Korea. ; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA. cshwang@postech.ac.kr avarsh@caltech.edu. ; Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, South Korea. cshwang@postech.ac.kr avarsh@caltech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25766235" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Amino Acid Sequence ; GTP-Binding Protein alpha Subunits, Gq-G11/metabolism ; HEK293 Cells ; HeLa Cells ; Humans ; Membrane Proteins/genetics/metabolism ; Mutant Proteins/chemistry/metabolism ; Protein Processing, Post-Translational ; Protein Stability ; Proteolysis ; RGS Proteins/chemistry/genetics/*metabolism ; Saccharomyces cerevisiae/genetics/metabolism ; Signal Transduction ; Ubiquitin-Protein Ligases/genetics/metabolism ; Ubiquitination
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  • 75
    Publication Date: 2015-02-24
    Description: Amyotrophic lateral sclerosis (ALS) is a devastating neurological disease with no effective treatment. We report the results of a moderate-scale sequencing study aimed at increasing the number of genes known to contribute to predisposition for ALS. We performed whole-exome sequencing of 2869 ALS patients and 6405 controls. Several known ALS genes were found to be associated, and TBK1 (the gene encoding TANK-binding kinase 1) was identified as an ALS gene. TBK1 is known to bind to and phosphorylate a number of proteins involved in innate immunity and autophagy, including optineurin (OPTN) and p62 (SQSTM1/sequestosome), both of which have also been implicated in ALS. These observations reveal a key role of the autophagic pathway in ALS and suggest specific targets for therapeutic intervention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4437632/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4437632/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cirulli, Elizabeth T -- Lasseigne, Brittany N -- Petrovski, Slave -- Sapp, Peter C -- Dion, Patrick A -- Leblond, Claire S -- Couthouis, Julien -- Lu, Yi-Fan -- Wang, Quanli -- Krueger, Brian J -- Ren, Zhong -- Keebler, Jonathan -- Han, Yujun -- Levy, Shawn E -- Boone, Braden E -- Wimbish, Jack R -- Waite, Lindsay L -- Jones, Angela L -- Carulli, John P -- Day-Williams, Aaron G -- Staropoli, John F -- Xin, Winnie W -- Chesi, Alessandra -- Raphael, Alya R -- McKenna-Yasek, Diane -- Cady, Janet -- Vianney de Jong, J M B -- Kenna, Kevin P -- Smith, Bradley N -- Topp, Simon -- Miller, Jack -- Gkazi, Athina -- FALS Sequencing Consortium -- Al-Chalabi, Ammar -- van den Berg, Leonard H -- Veldink, Jan -- Silani, Vincenzo -- Ticozzi, Nicola -- Shaw, Christopher E -- Baloh, Robert H -- Appel, Stanley -- Simpson, Ericka -- Lagier-Tourenne, Clotilde -- Pulst, Stefan M -- Gibson, Summer -- Trojanowski, John Q -- Elman, Lauren -- McCluskey, Leo -- Grossman, Murray -- Shneider, Neil A -- Chung, Wendy K -- Ravits, John M -- Glass, Jonathan D -- Sims, Katherine B -- Van Deerlin, Vivianna M -- Maniatis, Tom -- Hayes, Sebastian D -- Ordureau, Alban -- Swarup, Sharan -- Landers, John -- Baas, Frank -- Allen, Andrew S -- Bedlack, Richard S -- Harper, J Wade -- Gitler, Aaron D -- Rouleau, Guy A -- Brown, Robert -- Harms, Matthew B -- Cooper, Gregory M -- Harris, Tim -- Myers, Richard M -- Goldstein, David B -- 089701/Wellcome Trust/United Kingdom -- K08 NS075094/NS/NINDS NIH HHS/ -- P01 AG017586/AG/NIA NIH HHS/ -- P01 AG032953/AG/NIA NIH HHS/ -- P50 AG025688/AG/NIA NIH HHS/ -- R37 NS033123/NS/NINDS NIH HHS/ -- R37 NS083524/NS/NINDS NIH HHS/ -- T32 GM007754/GM/NIGMS NIH HHS/ -- TL1 TR001066/TR/NCATS NIH HHS/ -- UL1 TR001067/TR/NCATS NIH HHS/ -- New York, N.Y. -- Science. 2015 Mar 27;347(6229):1436-41. doi: 10.1126/science.aaa3650. Epub 2015 Feb 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Applied Genomics and Precision Medicine, Duke University School of Medicine, Durham, NC 27708, USA. ; HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA. ; Institute for Genomic Medicine, Columbia University, New York, NY 10032, USA. ; Department of Neurology, University of Massachusetts Medical School, Worcester, MA 01655, USA. ; Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec H3A 2B4, Canada. ; Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA. ; Duke University School of Medicine, Durham, NC 27708, USA. ; Biogen Idec, Cambridge, MA 02142, USA. ; Neurogenetics DNA Diagnostic Laboratory, Center for Human Genetics Research, Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA. ; Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA. ; Department of Genome Analysis, Academic Medical Center, Meibergdreef 9, 1105AZ Amsterdam, Netherlands. ; Academic Unit of Neurology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Republic of Ireland. ; Department of Basic and Clinical Neuroscience, King's College London, Institute of Psychiatry, Psychology and Neuroscience, London SE5 8AF, UK. ; Department of Neurology, Brain Center Rudolf Magnus, University Medical Centre Utrecht, 3508 GA Utrecht, Netherlands. ; Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan 20149, Italy, and Department of Pathophysiology and Transplantation, Dino Ferrari Center, Universita degli Studi di Milano, Milan 20122, Italy. ; Cedars Sinai Medical Center, Los Angeles, CA 90048, USA. ; Houston Methodist Hospital, Houston, TX 77030, USA, and Weill Cornell Medical College of Cornell University, New York, NY 10065, USA. ; Ludwig Institute for Cancer Research and Department of Neurosciences, University of California, San Diego, La Jolla, CA 92093, USA. ; Department of Neurology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA. ; Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. ; Department of Neurology, Penn ALS Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. ; Department of Neurology, Penn Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. ; Department of Neurology, Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032, USA. ; Department of Pediatrics and Medicine, Columbia University, New York, NY 10032, USA. ; Department of Neurosciences, University of California, San Diego, La Jolla, CA 92093, USA. ; Department of Neurology, Emory University, Atlanta, GA 30322, USA. ; Department of Biochemistry & Molecular Biophysics, Columbia University, New York, NY 10027, USA. ; Biogen Idec, Cambridge, MA 02142, USA. Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA. ; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA. ; Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC 27708, USA. ; Duke ALS Clinic and Durham VA Medical Center, Durham, NC 27708, USA. ; Biogen Idec, Cambridge, MA 02142, USA. tim.harris@biogenidec.com.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25700176" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/genetics/metabolism ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Amyotrophic Lateral Sclerosis/*genetics ; Autophagy/*genetics ; Exome/*genetics ; Female ; Genes ; Genetic Association Studies ; *Genetic Predisposition to Disease ; Humans ; Male ; Middle Aged ; Protein Binding ; Protein-Serine-Threonine Kinases/*genetics/metabolism ; Risk ; Sequence Analysis, DNA ; Transcription Factor TFIIIA/genetics/metabolism ; Young Adult
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  • 76
    Publication Date: 2015-10-17
    Description: Polycomb repressive complex 2 (PRC2) catalyzes histone H3K27 trimethylation (H3K27me3), a hallmark of gene silencing. Here we report the crystal structures of an active PRC2 complex of 170 kilodaltons from the yeast Chaetomium thermophilum in both basal and stimulated states, which contain Ezh2, Eed, and the VEFS domain of Suz12 and are bound to a cancer-associated inhibiting H3K27M peptide and a S-adenosyl-l-homocysteine cofactor. The stimulated complex also contains an additional stimulating H3K27me3 peptide. Eed is engulfed by a belt-like structure of Ezh2, and Suz12(VEFS) contacts both of these two subunits to confer an unusual split active SET domain for catalysis. Comparison of PRC2 in the basal and stimulated states reveals a mobile Ezh2 motif that responds to stimulation to allosterically regulate the active site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jiao, Lianying -- Liu, Xin -- GM114576/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Oct 16;350(6258):aac4383. doi: 10.1126/science.aac4383. Epub 2015 Oct 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Research, Department of Obstetrics and Gynecology and Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. ; Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Research, Department of Obstetrics and Gynecology and Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. xin.liu@utsouthwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26472914" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Amino Acid Sequence ; Catalysis ; Catalytic Domain ; Chaetomium/genetics/*metabolism ; Crystallography, X-Ray ; Fungal Proteins/antagonists & inhibitors/*chemistry/metabolism ; *Gene Silencing ; Histones/*metabolism ; Humans ; Jumonji Domain-Containing Histone Demethylases/metabolism ; Methylation ; Molecular Sequence Data ; Mutation ; Neoplasms/genetics ; Polycomb Repressive Complex 2/antagonists & inhibitors/*chemistry/metabolism ; Protein Structure, Tertiary ; S-Adenosylhomocysteine/chemistry/metabolism ; Transcription, Genetic
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  • 77
    Publication Date: 2015-06-27
    Description: Algal blooms produce large amounts of dimethyl sulfide (DMS), a volatile with a diverse signaling role in marine food webs that is emitted to the atmosphere, where it can affect cloud formation. The algal enzymes responsible for forming DMS from dimethylsulfoniopropionate (DMSP) remain unidentified despite their critical role in the global sulfur cycle. We identified and characterized Alma1, a DMSP lyase from the bloom-forming algae Emiliania huxleyi. Alma1 is a tetrameric, redox-sensitive enzyme of the aspartate racemase superfamily. Recombinant Alma1 exhibits biochemical features identical to the DMSP lyase in E. huxleyi, and DMS released by various E. huxleyi isolates correlates with their Alma1 levels. Sequence homology searches suggest that Alma1 represents a gene family present in major, globally distributed phytoplankton taxa and in other marine organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alcolombri, Uria -- Ben-Dor, Shifra -- Feldmesser, Ester -- Levin, Yishai -- Tawfik, Dan S -- Vardi, Assaf -- New York, N.Y. -- Science. 2015 Jun 26;348(6242):1466-9. doi: 10.1126/science.aab1586.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel. Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 76100, Israel. ; Bioinformatics and Biological Computing Unit, Biological Services, Weizmann Institute of Science, Rehovot 76100, Israel. ; Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot 76100, Israel. ; Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel. assaf.vardi@weizmann.ac.il dan.tawfik@weizmann.ac.il. ; Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 76100, Israel. assaf.vardi@weizmann.ac.il dan.tawfik@weizmann.ac.il.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26113722" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/*chemistry/classification/genetics ; Amino Acid Sequence ; Bacteria/enzymology/genetics ; Carbon-Sulfur Lyases/*chemistry/classification/genetics ; Haptophyta/*enzymology/genetics ; Molecular Sequence Data ; Phylogeny ; Phytoplankton/enzymology ; RNA, Messenger/biosynthesis ; Recombinant Proteins/chemistry ; Sulfides/*metabolism
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  • 78
    Publication Date: 2015-09-26
    Description: Mitochondria fulfill central functions in cellular energetics, metabolism, and signaling. The outer membrane translocator complex (the TOM complex) imports most mitochondrial proteins, but its architecture is unknown. Using a cross-linking approach, we mapped the active translocator down to single amino acid residues, revealing different transport paths for preproteins through the Tom40 channel. An N-terminal segment of Tom40 passes from the cytosol through the channel to recruit chaperones from the intermembrane space that guide the transfer of hydrophobic preproteins. The translocator contains three Tom40 beta-barrel channels sandwiched between a central alpha-helical Tom22 receptor cluster and external regulatory Tom proteins. The preprotein-translocating trimeric complex exchanges with a dimeric isoform to assemble new TOM complexes. Dynamic coupling of alpha-helical receptors, beta-barrel channels, and chaperones generates a versatile machinery that transports about 1000 different proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shiota, Takuya -- Imai, Kenichiro -- Qiu, Jian -- Hewitt, Victoria L -- Tan, Khershing -- Shen, Hsin-Hui -- Sakiyama, Noriyuki -- Fukasawa, Yoshinori -- Hayat, Sikander -- Kamiya, Megumi -- Elofsson, Arne -- Tomii, Kentaro -- Horton, Paul -- Wiedemann, Nils -- Pfanner, Nikolaus -- Lithgow, Trevor -- Endo, Toshiya -- New York, N.Y. -- Science. 2015 Sep 25;349(6255):1544-8. doi: 10.1126/science.aac6428.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Victoria 3800, Australia. Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan. ; Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology, 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan. ; Institut fur Biochemie und Molekularbiologie, Universitat Freiburg, 79104 Freiburg, Germany. ; Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Victoria 3800, Australia. ; Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden. ; Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan. ; Institut fur Biochemie und Molekularbiologie, Universitat Freiburg, 79104 Freiburg, Germany. Centre for Biological Signalling Studies, Universitat Freiburg, 79104 Freiburg, Germany. ; Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan. Faculty of Life Sciences, Kyoto Sangyo University, Kamigamo-motoyama, Kita-ku, Kyoto 603-8555, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26404837" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cytosol/metabolism ; Mitochondrial Membrane Transport Proteins/*chemistry/metabolism ; Molecular Chaperones ; Molecular Sequence Data ; Protein Multimerization ; Protein Structure, Secondary ; Protein Transport ; Saccharomyces cerevisiae Proteins/*chemistry/metabolism
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  • 79
    Publication Date: 2015-02-24
    Description: Notch receptors guide mammalian cell fate decisions by engaging the proteins Jagged and Delta-like (DLL). The 2.3 angstrom resolution crystal structure of the interacting regions of the Notch1-DLL4 complex reveals a two-site, antiparallel binding orientation assisted by Notch1 O-linked glycosylation. Notch1 epidermal growth factor-like repeats 11 and 12 interact with the DLL4 Delta/Serrate/Lag-2 (DSL) domain and module at the N-terminus of Notch ligands (MNNL) domains, respectively. Threonine and serine residues on Notch1 are functionalized with O-fucose and O-glucose, which act as surrogate amino acids by making specific, and essential, contacts to residues on DLL4. The elucidation of a direct chemical role for O-glycans in Notch1 ligand engagement demonstrates how, by relying on posttranslational modifications of their ligand binding sites, Notch proteins have linked their functional capacity to developmentally regulated biosynthetic pathways.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445638/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445638/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Luca, Vincent C -- Jude, Kevin M -- Pierce, Nathan W -- Nachury, Maxence V -- Fischer, Suzanne -- Garcia, K Christopher -- 1R01-GM097015/GM/NIGMS NIH HHS/ -- R01 GM097015/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Feb 20;347(6224):847-53. doi: 10.1126/science.1261093.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA. Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA. Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA. ; Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA. ; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA. Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA. Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA. kcgarcia@stanford.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25700513" target="_blank"〉PubMed〈/a〉
    Keywords: Alagille Syndrome/genetics ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Cell Line ; Conserved Sequence ; Crystallography, X-Ray ; Fucose/chemistry ; Glucose/chemistry ; Glycosylation ; Intracellular Signaling Peptides and Proteins/*chemistry/genetics ; Ligands ; Membrane Proteins/*chemistry/genetics/ultrastructure ; Molecular Sequence Data ; Molecular Targeted Therapy ; Polysaccharides/chemistry ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy/genetics ; Protein Binding ; Protein Structure, Tertiary ; Rats ; Receptor, Notch1/*chemistry/genetics/ultrastructure ; Serine/chemistry/genetics ; Threonine/chemistry/genetics
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  • 80
    Publication Date: 2015-03-15
    Description: Research suggesting that political conservatives are happier than political liberals has relied exclusively on self-report measures of subjective well-being. We show that this finding is fully mediated by conservatives' self-enhancing style of self-report (study 1; N = 1433) and then describe three studies drawing from "big data" sources to assess liberal-conservative differences in happiness-related behavior (studies 2 to 4; N = 4936). Relative to conservatives, liberals more frequently used positive emotional language in their speech and smiled more intensely and genuinely in photographs. Our results were consistent across large samples of online survey takers, U.S. politicians, Twitter users, and LinkedIn users. Our findings illustrate the nuanced relationship between political ideology, self-enhancement, and happiness and illuminate the contradictory ways that happiness differences can manifest across behavior and self-reports.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wojcik, Sean P -- Hovasapian, Arpine -- Graham, Jesse -- Motyl, Matt -- Ditto, Peter H -- New York, N.Y. -- Science. 2015 Mar 13;347(6227):1243-6. doi: 10.1126/science.1260817.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology and Social Behavior, University of California, Irvine, CA 92697, USA. swojcik@uci.edu phditto@uci.edu. ; Department of Psychology and Social Behavior, University of California, Irvine, CA 92697, USA. ; Department of Psychology, University of Southern California, CA 90089, USA. ; University of Illinois, Chicago, IL 60607, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25766233" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Emotions ; Facial Expression ; Female ; *Happiness ; Humans ; Language ; Male ; Middle Aged ; *Politics ; Self Report ; *Self-Assessment ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 81
    Publication Date: 2015-02-14
    Description: Nucleotide analog inhibitors have shown clinical success in the treatment of hepatitis C virus (HCV) infection, despite an incomplete mechanistic understanding of NS5B, the viral RNA-dependent RNA polymerase. Here we study the details of HCV RNA replication by determining crystal structures of stalled polymerase ternary complexes with enzymes, RNA templates, RNA primers, incoming nucleotides, and catalytic metal ions during both primed initiation and elongation of RNA synthesis. Our analysis revealed that highly conserved active-site residues in NS5B position the primer for in-line attack on the incoming nucleotide. A beta loop and a C-terminal membrane-anchoring linker occlude the active-site cavity in the apo state, retract in the primed initiation assembly to enforce replication of the HCV genome from the 3' terminus, and vacate the active-site cavity during elongation. We investigated the incorporation of nucleotide analog inhibitors, including the clinically active metabolite formed by sofosbuvir, to elucidate key molecular interactions in the active site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Appleby, Todd C -- Perry, Jason K -- Murakami, Eisuke -- Barauskas, Ona -- Feng, Joy -- Cho, Aesop -- Fox, David 3rd -- Wetmore, Diana R -- McGrath, Mary E -- Ray, Adrian S -- Sofia, Michael J -- Swaminathan, S -- Edwards, Thomas E -- New York, N.Y. -- Science. 2015 Feb 13;347(6223):771-5. doi: 10.1126/science.1259210.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gilead Sciences, 333 Lakeside Drive, Foster City, CA 94404, USA. todd.appleby@gilead.com tedwards@be4.com. ; Gilead Sciences, 333 Lakeside Drive, Foster City, CA 94404, USA. ; Beryllium, 7869 NE Day Road West, Bainbridge Island, WA 98110, USA. ; Beryllium, 7869 NE Day Road West, Bainbridge Island, WA 98110, USA. todd.appleby@gilead.com tedwards@be4.com.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25678663" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Catalytic Domain ; Conserved Sequence ; Crystallography, X-Ray ; Hepacivirus/enzymology/genetics/*physiology ; Molecular Sequence Data ; Protein Structure, Secondary ; RNA Replicase/*chemistry ; RNA, Viral/*biosynthesis ; Ribonucleotides/*chemistry ; Sofosbuvir ; Uridine Monophosphate/analogs & derivatives/chemistry ; Viral Nonstructural Proteins/*chemistry ; *Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2015-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, Jocelyn -- New York, N.Y. -- Science. 2015 Feb 20;347(6224):817. doi: 10.1126/science.347.6224.817.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25700496" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Biomedical Research/economics/*trends ; Child ; Cohort Studies ; *Electronic Health Records ; *Health Records, Personal ; Humans ; National Institutes of Health (U.S.) ; Precision Medicine/economics/*trends ; Research Design ; United States
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  • 83
    Publication Date: 2015-12-19
    Description: The voltage-gated calcium channel Ca(v)1.1 is engaged in the excitation-contraction coupling of skeletal muscles. The Ca(v)1.1 complex consists of the pore-forming subunit alpha1 and auxiliary subunits alpha2delta, beta, and gamma. We report the structure of the rabbit Ca(v)1.1 complex determined by single-particle cryo-electron microscopy. The four homologous repeats of the alpha1 subunit are arranged clockwise in the extracellular view. The gamma subunit, whose structure resembles claudins, interacts with the voltage-sensing domain of repeat IV (VSD(IV)), whereas the cytosolic beta subunit is located adjacent to VSD(II) of alpha1. The alpha2 subunit interacts with the extracellular loops of repeats I to III through its VWA and Cache1 domains. The structure reveals the architecture of a prototypical eukaryotic Ca(v) channel and provides a framework for understanding the function and disease mechanisms of Ca(v) and Na(v) channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Jianping -- Yan, Zhen -- Li, Zhangqiang -- Yan, Chuangye -- Lu, Shan -- Dong, Mengqiu -- Yan, Nieng -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Dec 18;350(6267):aad2395. doi: 10.1126/science.aad2395.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China. Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China. Center for Structural Biology, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China. ; National Institute of Biological Sciences, Beijing 102206, China. ; State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China. Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China. Center for Structural Biology, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China. nyan@tsinghua.edu.cn.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26680202" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium Channels, L-Type/*chemistry/genetics/isolation & purification ; Cell Membrane/chemistry ; Cryoelectron Microscopy ; Molecular Sequence Data ; Muscle, Skeletal/chemistry ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/isolation & purification ; Rabbits
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  • 84
    Publication Date: 2015-06-27
    Description: Light-gated rhodopsin cation channels from chlorophyte algae have transformed neuroscience research through their use as membrane-depolarizing optogenetic tools for targeted photoactivation of neuron firing. Photosuppression of neuronal action potentials has been limited by the lack of equally efficient tools for membrane hyperpolarization. We describe anion channel rhodopsins (ACRs), a family of light-gated anion channels from cryptophyte algae that provide highly sensitive and efficient membrane hyperpolarization and neuronal silencing through light-gated chloride conduction. ACRs strictly conducted anions, completely excluding protons and larger cations, and hyperpolarized the membrane of cultured animal cells with much faster kinetics at less than one-thousandth of the light intensity required by the most efficient currently available optogenetic proteins. Natural ACRs provide optogenetic inhibition tools with unprecedented light sensitivity and temporal precision.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4764398/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4764398/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Govorunova, Elena G -- Sineshchekov, Oleg A -- Janz, Roger -- Liu, Xiaoqin -- Spudich, John L -- R01 GM027750/GM/NIGMS NIH HHS/ -- R01GM027750/GM/NIGMS NIH HHS/ -- R21MH098288/MH/NIMH NIH HHS/ -- S10RR022531/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2015 Aug 7;349(6248):647-50. doi: 10.1126/science.aaa7484. Epub 2015 Jun 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Membrane Biology, Department of Biochemistry and Molecular Biology, University of Texas Medical School, Houston, TX 77030, USA. ; Department of Neurobiology and Anatomy, University of Texas Medical School, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26113638" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chloride Channels/classification/genetics/*physiology ; Cryptophyta/genetics/*metabolism ; HEK293 Cells ; Humans ; Ion Channel Gating ; Light ; Membrane Potentials/physiology/*radiation effects ; Molecular Sequence Data ; Neural Inhibition ; Neurons/physiology/*radiation effects ; Optogenetics/*methods ; Photic Stimulation ; Phylogeny ; Rhodopsins, Microbial/classification/genetics/*physiology ; Transfection
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  • 85
    Publication Date: 2015-06-06
    Description: The detailed molecular interactions between native HIV-1 capsid protein (CA) hexamers that shield the viral genome and proteins have been elusive. We report crystal structures describing interactions between CA monomers related by sixfold symmetry within hexamers (intrahexamer) and threefold and twofold symmetry between neighboring hexamers (interhexamer). The structures describe how CA builds hexagonal lattices, the foundation of mature capsids. Lattice structure depends on an adaptable hydration layer modulating interactions among CA molecules. Disruption of this layer alters interhexamer interfaces, highlighting an inherent structural variability. A CA-targeting antiviral affects capsid stability by binding across CA molecules and subtly altering interhexamer interfaces remote to the ligand-binding site. Inherent structural plasticity, hydration layer rearrangement, and effector binding affect capsid stability and have functional implications for the retroviral life cycle.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4584149/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4584149/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gres, Anna T -- Kirby, Karen A -- KewalRamani, Vineet N -- Tanner, John J -- Pornillos, Owen -- Sarafianos, Stefan G -- AI076119/AI/NIAID NIH HHS/ -- AI099284/AI/NIAID NIH HHS/ -- AI100890/AI/NIAID NIH HHS/ -- AI112417/AI/NIAID NIH HHS/ -- AI120860/AI/NIAID NIH HHS/ -- GM066087/GM/NIGMS NIH HHS/ -- GM103368/GM/NIGMS NIH HHS/ -- P50 GM103368/GM/NIGMS NIH HHS/ -- R01 AI076119/AI/NIAID NIH HHS/ -- R01 AI099284/AI/NIAID NIH HHS/ -- R01 AI100890/AI/NIAID NIH HHS/ -- R01 AI120860/AI/NIAID NIH HHS/ -- R01 GM066087/GM/NIGMS NIH HHS/ -- R21 AI112417/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2015 Jul 3;349(6243):99-103. doi: 10.1126/science.aaa5936. Epub 2015 Jun 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA. Department of Chemistry, University of Missouri, Columbia, MO 65211, USA. ; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA. Department of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Columbia, MO 65211, USA. ; Basic Research Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. ; Department of Chemistry, University of Missouri, Columbia, MO 65211, USA. Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA. ; Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA. ; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA. Department of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Columbia, MO 65211, USA. Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA. sarafianoss@missouri.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26044298" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Capsid/*chemistry ; Crystallography, X-Ray ; HIV-1/*chemistry/genetics ; Molecular Sequence Data ; Protein Multimerization ; Protein Structure, Secondary ; gag Gene Products, Human Immunodeficiency Virus/*chemistry/genetics
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  • 86
    Publication Date: 2015-04-25
    Description: In cells, biosynthetic machinery coordinates protein synthesis and folding to optimize efficiency and minimize off-pathway outcomes. However, it has been difficult to delineate experimentally the mechanisms responsible. Using fluorescence resonance energy transfer, we studied cotranslational folding of the first nucleotide-binding domain from the cystic fibrosis transmembrane conductance regulator. During synthesis, folding occurred discretely via sequential compaction of N-terminal, alpha-helical, and alpha/beta-core subdomains. Moreover, the timing of these events was critical; premature alpha-subdomain folding prevented subsequent core formation. This process was facilitated by modulating intrinsic folding propensity in three distinct ways: delaying alpha-subdomain compaction, facilitating beta-strand intercalation, and optimizing translation kinetics via codon usage. Thus, de novo folding is translationally tuned by an integrated cellular response that shapes the cotranslational folding landscape at critical stages of synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Soo Jung -- Yoon, Jae Seok -- Shishido, Hideki -- Yang, Zhongying -- Rooney, LeeAnn A -- Barral, Jose M -- Skach, William R -- P30CA069533/CA/NCI NIH HHS/ -- P30EYE010572/PHS HHS/ -- R01DK51818/DK/NIDDK NIH HHS/ -- R01GM53457/GM/NIGMS NIH HHS/ -- S10OD012246/OD/NIH HHS/ -- S10RR025571/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2015 Apr 24;348(6233):444-8. doi: 10.1126/science.aaa3974.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Oregon Health and Science University (OHSU), Portland, OR 97239, USA. ; Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77550-0620, USA. Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77550-0620, USA. ; Department of Biochemistry and Molecular Biology, Oregon Health and Science University (OHSU), Portland, OR 97239, USA. Cystic Fibrosis Foundation Therapeutics, Bethesda, MD 20814, USA. skachw@ohsu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25908822" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Codon/chemistry/*metabolism ; Cystic Fibrosis Transmembrane Conductance ; Regulator/*biosynthesis/*chemistry/genetics ; Fluorescence Resonance Energy Transfer ; Humans ; Kinetics ; Molecular Sequence Data ; *Peptide Chain Elongation, Translational ; *Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Ribosomes/chemistry/metabolism
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  • 87
    Publication Date: 2015-01-24
    Description: Chemokines and their receptors control cell migration during development, immune system responses, and in numerous diseases, including inflammation and cancer. The structural basis of receptor:chemokine recognition has been a long-standing unanswered question due to the challenges of structure determination for membrane protein complexes. Here, we report the crystal structure of the chemokine receptor CXCR4 in complex with the viral chemokine antagonist vMIP-II at 3.1 angstrom resolution. The structure revealed a 1:1 stoichiometry and a more extensive binding interface than anticipated from the paradigmatic two-site model. The structure helped rationalize a large body of mutagenesis data and together with modeling provided insights into CXCR4 interactions with its endogenous ligand CXCL12, its ability to recognize diverse ligands, and the specificity of CC and CXC receptors for their respective chemokines.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4362693/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4362693/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Qin, Ling -- Kufareva, Irina -- Holden, Lauren G -- Wang, Chong -- Zheng, Yi -- Zhao, Chunxia -- Fenalti, Gustavo -- Wu, Huixian -- Han, Gye Won -- Cherezov, Vadim -- Abagyan, Ruben -- Stevens, Raymond C -- Handel, Tracy M -- ACB-12002/PHS HHS/ -- AGM-12006/PHS HHS/ -- R01 GM071872/GM/NIGMS NIH HHS/ -- R01 GM081763/GM/NIGMS NIH HHS/ -- R21 AI101687/AI/NIAID NIH HHS/ -- U01 GM094612/GM/NIGMS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Mar 6;347(6226):1117-22. doi: 10.1126/science.1261064. Epub 2015 Jan 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of California, San Diego, Skaggs School of Pharmacy and Pharmaceutical Sciences, La Jolla, CA 92093, USA. ; University of California, San Diego, Skaggs School of Pharmacy and Pharmaceutical Sciences, La Jolla, CA 92093, USA. thandel@ucsd.edu stevens@usc.edu ikufareva@ucsd.edu. ; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. ; Department of Chemistry, Bridge Institute. Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, CA 90089, USA. ; Department of Chemistry, Bridge Institute. ; Department of Chemistry, Bridge Institute. Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, CA 90089, USA. thandel@ucsd.edu stevens@usc.edu ikufareva@ucsd.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25612609" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chemokine CXCL12/chemistry ; Chemokines/*chemistry ; Crystallography, X-Ray ; Drug Design ; Humans ; Models, Chemical ; Molecular Sequence Data ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein Multimerization ; Receptors, CXCR4/agonists/antagonists & inhibitors/*chemistry ; Structural Homology, Protein
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  • 88
    Publication Date: 2015-08-01
    Description: The inefficient clearance of dying cells can lead to abnormal immune responses, such as unresolved inflammation and autoimmune conditions. We show that tumor suppressor p53 controls signaling-mediated phagocytosis of apoptotic cells through its target, Death Domain1alpha (DD1alpha), which suggests that p53 promotes both the proapoptotic pathway and postapoptotic events. DD1alpha appears to function as an engulfment ligand or receptor that engages in homophilic intermolecular interaction at intercellular junctions of apoptotic cells and macrophages, unlike other typical scavenger receptors that recognize phosphatidylserine on the surface of dead cells. DD1alpha-deficient mice showed in vivo defects in clearing dying cells, which led to multiple organ damage indicative of immune dysfunction. p53-induced expression of DD1alpha thus prevents persistence of cell corpses and ensures efficient generation of precise immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoon, Kyoung Wan -- Byun, Sanguine -- Kwon, Eunjeong -- Hwang, So-Young -- Chu, Kiki -- Hiraki, Masatsugu -- Jo, Seung-Hee -- Weins, Astrid -- Hakroush, Samy -- Cebulla, Angelika -- Sykes, David B -- Greka, Anna -- Mundel, Peter -- Fisher, David E -- Mandinova, Anna -- Lee, Sam W -- CA142805/CA/NCI NIH HHS/ -- CA149477/CA/NCI NIH HHS/ -- CA80058/CA/NCI NIH HHS/ -- DK062472/DK/NIDDK NIH HHS/ -- DK091218/DK/NIDDK NIH HHS/ -- DK093378/DK/NIDDK NIH HHS/ -- DK57683/DK/NIDDK NIH HHS/ -- S10RR027673/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2015 Jul 31;349(6247):1261669. doi: 10.1126/science.1261669.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA. ; Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02115, USA. ; Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA. ; Center for Regenerative Medicine and Technology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA. ; Department of Medicine, Glom-NExT Center for Glomerular Kidney Disease and Novel Experimental Therapeutics, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02115, USA. ; Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA. Broad Institute of Harvard and MIT, 7 Cambridge Center, Cambridge, MA 02142, USA. ; Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA. Broad Institute of Harvard and MIT, 7 Cambridge Center, Cambridge, MA 02142, USA. swlee@mgh.harvard.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26228159" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis/genetics/*immunology ; Autoimmune Diseases/genetics/immunology ; Cell Line, Tumor ; Female ; Humans ; Inflammation/genetics/immunology ; Macrophages/immunology ; Male ; Membrane Proteins/genetics/*metabolism ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Phagocytosis/*immunology ; Phosphatidylserines/*metabolism ; Signal Transduction ; Tumor Suppressor Protein p53/*metabolism
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  • 89
    Publication Date: 2015-09-01
    Description: The nuclear pore complex (NPC) constitutes the sole gateway for bidirectional nucleocytoplasmic transport. We present the reconstitution and interdisciplinary analyses of the ~425-kilodalton inner ring complex (IRC), which forms the central transport channel and diffusion barrier of the NPC, revealing its interaction network and equimolar stoichiometry. The Nsp1*Nup49*Nup57 channel nucleoporin heterotrimer (CNT) attaches to the IRC solely through the adaptor nucleoporin Nic96. The CNT*Nic96 structure reveals that Nic96 functions as an assembly sensor that recognizes the three-dimensional architecture of the CNT, thereby mediating the incorporation of a defined CNT state into the NPC. We propose that the IRC adopts a relatively rigid scaffold that recruits the CNT to primarily form the diffusion barrier of the NPC, rather than enabling channel dilation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stuwe, Tobias -- Bley, Christopher J -- Thierbach, Karsten -- Petrovic, Stefan -- Schilbach, Sandra -- Mayo, Daniel J -- Perriches, Thibaud -- Rundlet, Emily J -- Jeon, Young E -- Collins, Leslie N -- Huber, Ferdinand M -- Lin, Daniel H -- Paduch, Marcin -- Koide, Akiko -- Lu, Vincent -- Fischer, Jessica -- Hurt, Ed -- Koide, Shohei -- Kossiakoff, Anthony A -- Hoelz, Andre -- ACB-12002/PHS HHS/ -- AGM-12006/PHS HHS/ -- P30-CA014599/CA/NCI NIH HHS/ -- R01-GM090324/GM/NIGMS NIH HHS/ -- R01-GM111461/GM/NIGMS NIH HHS/ -- U01-GM094588/GM/NIGMS NIH HHS/ -- U54-GM087519/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Oct 2;350(6256):56-64. doi: 10.1126/science.aac9176. Epub 2015 Aug 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 East California Boulevard, Pasadena, CA 91125, USA. ; Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, IL 60637, USA. ; Biochemistry Center of Heidelberg University, 69120 Heidelberg, Germany. ; California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 East California Boulevard, Pasadena, CA 91125, USA. hoelz@caltech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26316600" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chaetomium/metabolism/*ultrastructure ; Fungal Proteins/chemistry/*ultrastructure ; Molecular Sequence Data ; Nuclear Pore/metabolism/*ultrastructure ; Nuclear Pore Complex Proteins/chemistry/*ultrastructure ; Nuclear Proteins/chemistry/*ultrastructure ; Protein Binding ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary
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  • 90
    Publication Date: 2015-09-19
    Description: A wide variety of RNAs encode small open-reading-frame (smORF/sORF) peptides, but their functions are largely unknown. Here, we show that Drosophila polished-rice (pri) sORF peptides trigger proteasome-mediated protein processing, converting the Shavenbaby (Svb) transcription repressor into a shorter activator. A genome-wide RNA interference screen identifies an E2-E3 ubiquitin-conjugating complex, UbcD6-Ubr3, which targets Svb to the proteasome in a pri-dependent manner. Upon interaction with Ubr3, Pri peptides promote the binding of Ubr3 to Svb. Ubr3 can then ubiquitinate the Svb N terminus, which is degraded by the proteasome. The C-terminal domains protect Svb from complete degradation and ensure appropriate processing. Our data show that Pri peptides control selectivity of Ubr3 binding, which suggests that the family of sORF peptides may contain an extended repertoire of protein regulators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zanet, J -- Benrabah, E -- Li, T -- Pelissier-Monier, A -- Chanut-Delalande, H -- Ronsin, B -- Bellen, H J -- Payre, F -- Plaza, S -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Sep 18;349(6254):1356-8. doi: 10.1126/science.aac5677.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre de Biologie du Developpement, Universite de Toulouse III-Paul Sabatier, Batiment 4R3, 118 route de Narbonne, F-31062 Toulouse, France. CNRS, UMR5547, Centre de Biologie du Developpement, F-31062 Toulouse, France. ; Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA. ; Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA. Department of Molecular and Human Genetics, Howard Hughes Medical Institute, Neurological Research Institute, Baylor College of Medicine, Houston, TX 77030, USA. ; Centre de Biologie du Developpement, Universite de Toulouse III-Paul Sabatier, Batiment 4R3, 118 route de Narbonne, F-31062 Toulouse, France. CNRS, UMR5547, Centre de Biologie du Developpement, F-31062 Toulouse, France. francois.payre@univ-tlse3.fr serge.plaza@univ-tlse3.f.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26383956" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Drosophila Proteins/chemistry/genetics/*metabolism ; Drosophila melanogaster/enzymology/genetics/*metabolism ; Gene Expression Regulation ; Molecular Sequence Data ; Open Reading Frames ; Peptides/genetics/*metabolism ; Proteasome Endopeptidase Complex/*metabolism ; Protein Structure, Tertiary ; *Proteolysis ; RNA Interference ; Transcription Factors/chemistry/genetics/*metabolism ; Ubiquitin-Conjugating Enzymes/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitination
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  • 91
    Publication Date: 2015-01-31
    Description: Translocator proteins (TSPOs) bind steroids and porphyrins, and they are implicated in many human diseases, for which they serve as biomarkers and therapeutic targets. TSPOs have tryptophan-rich sequences that are highly conserved from bacteria to mammals. Here we report crystal structures for Bacillus cereus TSPO (BcTSPO) down to 1.7 A resolution, including a complex with the benzodiazepine-like inhibitor PK11195. We also describe BcTSPO-mediated protoporphyrin IX (PpIX) reactions, including catalytic degradation to a previously undescribed heme derivative. We used structure-inspired mutations to investigate reaction mechanisms, and we showed that TSPOs from Xenopus and man have similar PpIX-directed activities. Although TSPOs have been regarded as transporters, the catalytic activity in PpIX degradation suggests physiological importance for TSPOs in protection against oxidative stress.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4341906/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4341906/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, Youzhong -- Kalathur, Ravi C -- Liu, Qun -- Kloss, Brian -- Bruni, Renato -- Ginter, Christopher -- Kloppmann, Edda -- Rost, Burkhard -- Hendrickson, Wayne A -- GM095315/GM/NIGMS NIH HHS/ -- GM107462/GM/NIGMS NIH HHS/ -- R01 GM107462/GM/NIGMS NIH HHS/ -- U54 GM075026/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Jan 30;347(6221):551-5. doi: 10.1126/science.aaa1534.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA. ; The New York Consortium on Membrane Protein Structure (NYCOMPS), New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA. ; The New York Consortium on Membrane Protein Structure (NYCOMPS), New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA. New York Structural Biology Center, Synchrotron Beamlines, Brookhaven National Laboratory, Upton, NY 11973, USA. ; The New York Consortium on Membrane Protein Structure (NYCOMPS), New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA. Department of Informatics, Bioinformatics and Computational Biology, Technische Universitat Munchen, Garching 85748, Germany. ; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA. The New York Consortium on Membrane Protein Structure (NYCOMPS), New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA. New York Structural Biology Center, Synchrotron Beamlines, Brookhaven National Laboratory, Upton, NY 11973, USA. Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032, USA. wayne@xtl.cumc.columbia.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25635100" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacillus cereus/*chemistry ; Bacterial Proteins/*chemistry/*metabolism ; Binding Sites ; Crystallography, X-Ray ; Isoquinolines/metabolism ; Ligands ; Membrane Transport Proteins/*chemistry/*metabolism ; Molecular Sequence Data ; Mutant Proteins/chemistry/metabolism ; Protein Conformation ; Protein Multimerization ; Protein Structure, Secondary ; Protein Subunits/chemistry ; Protoporphyrins/metabolism ; Reactive Oxygen Species/metabolism ; Tryptophan/analysis
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  • 92
    Publication Date: 2015-05-09
    Description: In the fruit fly Drosophila, head formation is driven by a single gene, bicoid, which generates head-to-tail polarity of the main embryonic axis. Bicoid deficiency results in embryos with tail-to-tail polarity and no head. However, most insects lack bicoid, and the molecular mechanism for establishing head-to-tail polarity is poorly understood. We have identified a gene that establishes head-to-tail polarity of the mosquito-like midge, Chironomus riparius. This gene, named panish, encodes a cysteine-clamp DNA binding domain and operates through a different mechanism than bicoid. This finding, combined with the observation that the phylogenetic distributions of panish and bicoid are limited to specific families of flies, reveals frequent evolutionary changes of body axis determinants and a remarkable opportunity to study gene regulatory network evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4449817/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4449817/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klomp, Jeff -- Athy, Derek -- Kwan, Chun Wai -- Bloch, Natasha I -- Sandmann, Thomas -- Lemke, Steffen -- Schmidt-Ott, Urs -- 1R03HD67700-01A1/HD/NICHD NIH HHS/ -- R03 HD067700/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2015 May 29;348(6238):1040-2. doi: 10.1126/science.aaa7105. Epub 2015 May 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL 60637, USA. ; Division of Signaling and Functional Genomics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany. ; Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL 60637, USA. uschmid@uchicago.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25953821" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Body Patterning/*genetics ; Chironomidae/*embryology/genetics ; DNA-Binding Proteins/classification/genetics/*physiology ; Embryo, Nonmammalian/*embryology ; Evolution, Molecular ; Gene Expression Regulation, Developmental ; Gene Regulatory Networks ; Homeodomain Proteins/classification/genetics/*physiology ; Molecular Sequence Data ; Phylogeny ; Protein Structure, Tertiary/genetics ; Trans-Activators/classification/genetics/*physiology
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  • 93
    Publication Date: 2015-04-18
    Description: Measles is a highly contagious human disease. We used cryo-electron microscopy and single particle-based helical image analysis to determine the structure of the helical nucleocapsid formed by the folded domain of the measles virus nucleoprotein encapsidating an RNA at a resolution of 4.3 angstroms. The resulting pseudoatomic model of the measles virus nucleocapsid offers important insights into the mechanism of the helical polymerization of nucleocapsids of negative-strand RNA viruses, in particular via the exchange subdomains of the nucleoprotein. The structure reveals the mode of the nucleoprotein-RNA interaction and explains why each nucleoprotein of measles virus binds six nucleotides, whereas the respiratory syncytial virus nucleoprotein binds seven. It provides a rational basis for further analysis of measles virus replication and transcription, and reveals potential targets for drug design.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gutsche, Irina -- Desfosses, Ambroise -- Effantin, Gregory -- Ling, Wai Li -- Haupt, Melina -- Ruigrok, Rob W H -- Sachse, Carsten -- Schoehn, Guy -- New York, N.Y. -- Science. 2015 May 8;348(6235):704-7. doi: 10.1126/science.aaa5137. Epub 2015 Apr 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CNRS, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. Universite Grenoble Alpes, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. gutsche@embl.fr. ; Structural and Computational Biology Unit, European Molecular Biology Laboratory, 69917 Heidelberg, Germany. ; CNRS, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. Universite Grenoble Alpes, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. ; Universite Grenoble Alpes, IBS, 38044 Grenoble, France. CNRS, IBS, 38044 Grenoble, France. CEA, IBS, 38044 Grenoble, France. ; Institut Laue-Langevin, 38000 Grenoble, France. ; CNRS, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. Universite Grenoble Alpes, Unit for Virus Host-Cell Interactions, 38042 Grenoble, France. Universite Grenoble Alpes, IBS, 38044 Grenoble, France. CNRS, IBS, 38044 Grenoble, France. CEA, IBS, 38044 Grenoble, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25883315" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cryoelectron Microscopy ; Humans ; Measles/*virology ; Measles virus/chemistry/*ultrastructure ; Molecular Sequence Data ; Nucleic Acid Conformation ; Nucleocapsid/chemistry/*ultrastructure ; Nucleoproteins/chemistry/ultrastructure ; Protein Structure, Secondary ; RNA, Viral/chemistry/ultrastructure ; Viral Proteins/chemistry/ultrastructure
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  • 94
    Publication Date: 2016-01-23
    Description: Mono-ubiquitination of Fancd2 is essential for repairing DNA interstrand cross-links (ICLs), but the underlying mechanisms are unclear. The Fan1 nuclease, also required for ICL repair, is recruited to ICLs by ubiquitinated (Ub) Fancd2. This could in principle explain how Ub-Fancd2 promotes ICL repair, but we show that recruitment of Fan1 by Ub-Fancd2 is dispensable for ICL repair. Instead, Fan1 recruitment--and activity--restrains DNA replication fork progression and prevents chromosome abnormalities from occurring when DNA replication forks stall, even in the absence of ICLs. Accordingly, Fan1 nuclease-defective knockin mice are cancer-prone. Moreover, we show that a Fan1 variant in high-risk pancreatic cancers abolishes recruitment by Ub-Fancd2 and causes genetic instability without affecting ICL repair. Therefore, Fan1 recruitment enables processing of stalled forks that is essential for genome stability and health.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lachaud, Christophe -- Moreno, Alberto -- Marchesi, Francesco -- Toth, Rachel -- Blow, J Julian -- Rouse, John -- WT096598MA/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):846-9. doi: 10.1126/science.aad5634. Epub 2016 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; Centre for Gene Regulation and Expression, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Bearsden Road, Glasgow G61 1QH, UK. ; Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. j.rouse@dundee.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26797144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Chromosome Aberrations ; DNA Repair ; *DNA Replication ; Endodeoxyribonucleases/genetics/*metabolism ; Fanconi Anemia Complementation Group D2 Protein/genetics/*metabolism ; Female ; Gene Knock-In Techniques ; Genetic Predisposition to Disease ; Genomic Instability/*genetics ; Liver Neoplasms/genetics/pathology ; Lung Neoplasms/genetics/pathology ; Lymphoma/genetics/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Pancreatic Neoplasms/*genetics ; *Ubiquitination
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  • 95
    Publication Date: 2016-04-02
    Description: The recent rapid spread of Zika virus and its unexpected linkage to birth defects and an autoimmune neurological syndrome have generated worldwide concern. Zika virus is a flavivirus like the dengue, yellow fever, and West Nile viruses. We present the 3.8 angstrom resolution structure of mature Zika virus, determined by cryo-electron microscopy (cryo-EM). The structure of Zika virus is similar to other known flavivirus structures, except for the ~10 amino acids that surround the Asn(154) glycosylation site in each of the 180 envelope glycoproteins that make up the icosahedral shell. The carbohydrate moiety associated with this residue, which is recognizable in the cryo-EM electron density, may function as an attachment site of the virus to host cells. This region varies not only among Zika virus strains but also in other flaviviruses, which suggests that differences in this region may influence virus transmission and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845755/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845755/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sirohi, Devika -- Chen, Zhenguo -- Sun, Lei -- Klose, Thomas -- Pierson, Theodore C -- Rossmann, Michael G -- Kuhn, Richard J -- R01 AI073755/AI/NIAID NIH HHS/ -- R01 AI076331/AI/NIAID NIH HHS/ -- R01AI073755/AI/NIAID NIH HHS/ -- R01AI076331/AI/NIAID NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2016 Apr 22;352(6284):467-70. doi: 10.1126/science.aaf5316. Epub 2016 Mar 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Markey Center for Structural Biology and Purdue Institute for Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN 47907, USA. ; Viral Pathogenesis Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27033547" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cryoelectron Microscopy ; Glycosylation ; Humans ; Molecular Sequence Data ; Protein Structure, Tertiary ; Viral Envelope Proteins/chemistry/ultrastructure ; Viral Matrix Proteins/chemistry/ultrastructure ; Zika Virus/*chemistry/*ultrastructure
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  • 96
    Publication Date: 2016-04-16
    Description: The nuclear pore complex (NPC) controls the transport of macromolecules between the nucleus and cytoplasm, but its molecular architecture has thus far remained poorly defined. We biochemically reconstituted NPC core protomers and elucidated the underlying protein-protein interaction network. Flexible linker sequences, rather than interactions between the structured core scaffold nucleoporins, mediate the assembly of the inner ring complex and its attachment to the NPC coat. X-ray crystallographic analysis of these scaffold nucleoporins revealed the molecular details of their interactions with the flexible linker sequences and enabled construction of full-length atomic structures. By docking these structures into the cryoelectron tomographic reconstruction of the intact human NPC and validating their placement with our nucleoporin interactome, we built a composite structure of the NPC symmetric core that contains ~320,000 residues and accounts for ~56 megadaltons of the NPC's structured mass. Our approach provides a paradigm for the structure determination of similarly complex macromolecular assemblies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Daniel H -- Stuwe, Tobias -- Schilbach, Sandra -- Rundlet, Emily J -- Perriches, Thibaud -- Mobbs, George -- Fan, Yanbin -- Thierbach, Karsten -- Huber, Ferdinand M -- Collins, Leslie N -- Davenport, Andrew M -- Jeon, Young E -- Hoelz, Andre -- 5 T32 GM07616/GM/NIGMS NIH HHS/ -- ACB-12002/PHS HHS/ -- AGM-12006/PHS HHS/ -- R01 GM111461/GM/NIGMS NIH HHS/ -- R01-GM111461/GM/NIGMS NIH HHS/ -- T32 GM007616/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2016 Apr 15;352(6283):aaf1015. doi: 10.1126/science.aaf1015. Epub 2016 Apr 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. ; Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. hoelz@caltech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27081075" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Cryoelectron Microscopy ; Crystallography, X-Ray ; Cytoplasm/metabolism ; Electron Microscope Tomography ; Fungal Proteins/chemistry/genetics/metabolism ; Humans ; Molecular Sequence Data ; Nuclear Pore/chemistry/*metabolism/*ultrastructure ; Nuclear Pore Complex Proteins/chemistry/genetics/*metabolism ; *Protein Interaction Maps ; Protein Structure, Tertiary ; Protein Subunits/chemistry/genetics/metabolism
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  • 97
    Publication Date: 2016-02-27
    Description: Ebola virus disease in humans is highly lethal, with case fatality rates ranging from 25 to 90%. There is no licensed treatment or vaccine against the virus, underscoring the need for efficacious countermeasures. We ascertained that a human survivor of the 1995 Kikwit Ebola virus disease outbreak maintained circulating antibodies against the Ebola virus surface glycoprotein for more than a decade after infection. From this survivor we isolated monoclonal antibodies (mAbs) that neutralize recent and previous outbreak variants of Ebola virus and mediate antibody-dependent cell-mediated cytotoxicity in vitro. Strikingly, monotherapy with mAb114 protected macaques when given as late as 5 days after challenge. Treatment with a single human mAb suggests that a simplified therapeutic strategy for human Ebola infection may be possible.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corti, Davide -- Misasi, John -- Mulangu, Sabue -- Stanley, Daphne A -- Kanekiyo, Masaru -- Wollen, Suzanne -- Ploquin, Aurelie -- Doria-Rose, Nicole A -- Staupe, Ryan P -- Bailey, Michael -- Shi, Wei -- Choe, Misook -- Marcus, Hadar -- Thompson, Emily A -- Cagigi, Alberto -- Silacci, Chiara -- Fernandez-Rodriguez, Blanca -- Perez, Laurent -- Sallusto, Federica -- Vanzetta, Fabrizia -- Agatic, Gloria -- Cameroni, Elisabetta -- Kisalu, Neville -- Gordon, Ingelise -- Ledgerwood, Julie E -- Mascola, John R -- Graham, Barney S -- Muyembe-Tamfun, Jean-Jacques -- Trefry, John C -- Lanzavecchia, Antonio -- Sullivan, Nancy J -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2016 Mar 18;351(6279):1339-42. doi: 10.1126/science.aad5224. Epub 2016 Feb 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Research in Biomedicine, Universita della Svizzera Italiana, CH-6500 Bellinzona, Switzerland. Humabs BioMed SA, 6500 Bellinzona, Switzerland. ; Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA. ; U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD 21702, USA. ; Institute for Research in Biomedicine, Universita della Svizzera Italiana, CH-6500 Bellinzona, Switzerland. ; Humabs BioMed SA, 6500 Bellinzona, Switzerland. ; National Institute for Biomedical Research, National Laboratory of Public Health, Kinshasa B.P. 1197, Democratic Republic of the Congo. ; Institute for Research in Biomedicine, Universita della Svizzera Italiana, CH-6500 Bellinzona, Switzerland. Institute of Microbiology, ETH Zurich, CH-8093 Zurich, Switzerland. ; Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA. njsull@mail.nih.gov.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26917593" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Antibodies, Monoclonal/*administration & dosage/immunology/isolation & ; purification ; Antibodies, Neutralizing/*administration & dosage/immunology/isolation & ; purification ; Antibodies, Viral/*administration & dosage/immunology/isolation & purification ; Clinical Trials as Topic ; Disease Outbreaks ; Ebolavirus/*immunology ; Female ; Hemorrhagic Fever, Ebola/epidemiology/*prevention & control ; Humans ; Macaca ; Male ; Molecular Sequence Data ; Survivors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
    Publication Date: 2016-02-26
    Description: T cell-mediated destruction of insulin-producing beta cells in the pancreas causes type 1 diabetes (T1D). CD4 T cell responses play a central role in beta cell destruction, but the identity of the epitopes recognized by pathogenic CD4 T cells remains unknown. We found that diabetes-inducing CD4 T cell clones isolated from nonobese diabetic mice recognize epitopes formed by covalent cross-linking of proinsulin peptides to other peptides present in beta cell secretory granules. These hybrid insulin peptides (HIPs) are antigenic for CD4 T cells and can be detected by mass spectrometry in beta cells. CD4 T cells from the residual pancreatic islets of two organ donors who had T1D also recognize HIPs. Autoreactive T cells targeting hybrid peptides may explain how immune tolerance is broken in T1D.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Delong, Thomas -- Wiles, Timothy A -- Baker, Rocky L -- Bradley, Brenda -- Barbour, Gene -- Reisdorph, Richard -- Armstrong, Michael -- Powell, Roger L -- Reisdorph, Nichole -- Kumar, Nitesh -- Elso, Colleen M -- DeNicola, Megan -- Bottino, Rita -- Powers, Alvin C -- Harlan, David M -- Kent, Sally C -- Mannering, Stuart I -- Haskins, Kathryn -- 1K01DK094941/DK/NIDDK NIH HHS/ -- 1R01DK081166/DK/NIDDK NIH HHS/ -- 5U01DK89572/DK/NIDDK NIH HHS/ -- DK104211/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2016 Feb 12;351(6274):711-4. doi: 10.1126/science.aad2791.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology and Microbiology, University of Colorado School of Medicine, Denver, Anschutz Medical Campus, Aurora, CO 80045, USA. thomas.delong@ucdenver.edu katie.haskins@ucdenver.edu. ; Department of Immunology and Microbiology, University of Colorado School of Medicine, Denver, Anschutz Medical Campus, Aurora, CO 80045, USA. ; Pharmaceutical Sciences, University of Colorado School of Medicine, Aurora, CO 80045, USA. ; Immunology and Diabetes Unit, St. Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Victoria 3065, Australia. ; Department of Medicine, Diabetes Division, Diabetes Center of Excellence, University of Massachusetts Medical School, Worcester, MA, USA. ; Institute of Cellular Therapeutics, Allegheny-Singer Research Institute, Allegheny Health Network, Pittsburgh, PA, USA. ; Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, and Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN, USA. VA Tennessee Valley Healthcare System, Nashville, TN, USA. ; Immunology and Diabetes Unit, St. Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Victoria 3065, Australia. University of Melbourne, Department of Medicine, St. Vincent's Hospital, Fitzroy, Victoria 3065, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912858" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; C-Peptide/chemistry/*immunology ; CD4-Positive T-Lymphocytes/*immunology ; Clone Cells ; Diabetes Mellitus, Experimental/*immunology/pathology ; Diabetes Mellitus, Type 1/*immunology/pathology ; Epitopes/*immunology ; Immune Tolerance ; Insulin-Secreting Cells/*immunology/pathology ; Mice ; Mice, Inbred NOD ; Molecular Sequence Data ; Peptides/chemistry/immunology
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  • 99
    Publication Date: 2016-03-19
    Description: Steroids regulate cell proliferation, tissue development, and cell signaling via two pathways: a nuclear receptor mechanism and genome-independent signaling. Sperm activation, egg maturation, and steroid-induced anesthesia are executed via the latter pathway, the key components of which remain unknown. Here, we present characterization of the human sperm progesterone receptor that is conveyed by the orphan enzyme alpha/beta hydrolase domain-containing protein 2 (ABHD2). We show that ABHD2 is highly expressed in spermatozoa, binds progesterone, and acts as a progesterone-dependent lipid hydrolase by depleting the endocannabinoid 2-arachidonoylglycerol (2AG) from plasma membrane. The 2AG inhibits the sperm calcium channel (CatSper), and its removal leads to calcium influx via CatSper and ensures sperm activation. This study reveals that progesterone-activated endocannabinoid depletion by ABHD2 is a general mechanism by which progesterone exerts its genome-independent action and primes sperm for fertilization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Melissa R -- Mannowetz, Nadja -- Iavarone, Anthony T -- Safavi, Rojin -- Gracheva, Elena O -- Smith, James F -- Hill, Rose Z -- Bautista, Diana M -- Kirichok, Yuriy -- Lishko, Polina V -- 1S10OD020062-01/OD/NIH HHS/ -- R01 AR059385/AR/NIAMS NIH HHS/ -- R01AR059385/AR/NIAMS NIH HHS/ -- R01GM111802/GM/NIGMS NIH HHS/ -- R01HD068914/HD/NICHD NIH HHS/ -- R21HD081403/HD/NICHD NIH HHS/ -- S10RR025622/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2016 Apr 29;352(6285):555-9. doi: 10.1126/science.aad6887. Epub 2016 Mar 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA. ; QB3/Chemistry Mass Spectrometry Facility, University of California, Berkeley, CA 94720, USA. ; Department of Cellular and Molecular Physiology; Department of Neuroscience, Program in Cellular Neuroscience, Neurodegeneration, and Repair (CNNR), Yale School of Medicine, Yale University, New Haven, CT 06536, USA. ; Department of Urology, University of California, San Francisco, CA 94143, USA. ; Department of Physiology, University of California, San Francisco, CA 94158, USA. ; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA. lishko@berkeley.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26989199" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Arachidonic Acids/*deficiency ; Calcium/metabolism ; Calcium Channels/metabolism ; Calcium Signaling ; Cell Membrane/metabolism ; Endocannabinoids/*deficiency ; Fertilization ; Glycerides/*deficiency ; Humans ; Hydrolases/genetics/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Progesterone/*metabolism/pharmacology ; Rats ; Rats, Wistar ; Receptors, Progesterone/genetics/*metabolism ; Sperm Motility/drug effects/*physiology ; Spermatozoa/drug effects/metabolism/*physiology ; Young Adult
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  • 100
    Publication Date: 2016-02-26
    Description: With functions that range from cell envelope structure to signal transduction and transport, lipoproteins constitute 2 to 3% of bacterial genomes and play critical roles in bacterial physiology, pathogenicity, and antibiotic resistance. Lipoproteins are synthesized with a signal peptide securing them to the cytoplasmic membrane with the lipoprotein domain in the periplasm or outside the cell. Posttranslational processing requires a signal peptidase II (LspA) that removes the signal peptide. Here, we report the crystal structure of LspA from Pseudomonas aeruginosa complexed with the antimicrobial globomycin at 2.8 angstrom resolution. Mutagenesis studies identify LspA as an aspartyl peptidase. In an example of molecular mimicry, globomycin appears to inhibit by acting as a noncleavable peptide that sterically blocks the active site. This structure should inform rational antibiotic drug discovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogeley, Lutz -- El Arnaout, Toufic -- Bailey, Jonathan -- Stansfeld, Phillip J -- Boland, Coilin -- Caffrey, Martin -- BB/I019855/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):876-80. doi: 10.1126/science.aad3747.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland. ; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, UK. ; School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland. martin.caffrey@tcd.ie.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912896" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anti-Bacterial Agents/*chemistry/pharmacology ; Aspartic Acid Endopeptidases/*antagonists & inhibitors/*chemistry/genetics ; Bacterial Proteins/*antagonists & inhibitors/*chemistry/genetics ; Catalytic Domain ; Conserved Sequence ; Crystallography, X-Ray ; Mutagenesis ; Peptides/*chemistry/pharmacology ; Protein Conformation ; Protein Processing, Post-Translational ; Pseudomonas aeruginosa/*enzymology ; Substrate Specificity
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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