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  • 1
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    Antibody-mediated activation of Drosophila heat shock factor in vitro (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-03
    Description: Eukaryotic cells respond to elevated temperatures by rapidly activating the expression of heat shock genes. Central to this activation is heat shock-inducible binding of the transcriptional activator, termed heat shock factor (HSF), to common regulatory elements, which are located upstream of all heat shock genes. The DNA binding activity of the inactive form of Drosophila HSF was induced in vitro by treatment with polyclonal antibodies to the purified, in vivo-activated factor. This finding, together with observations that high temperature and low pH activate HSF binding in vitro, suggests that the inactive form of HSF can directly recognize and transduce the heat shock signal without undergoing a covalent modification of protein structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimarino, V -- Wilson, S -- Wu, C -- New York, N.Y. -- Science. 1990 Aug 3;249(4968):546-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2200124" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies ; Drosophila/*genetics ; *Gene Expression Regulation ; HeLa Cells/metabolism ; Heat-Shock Proteins/*genetics/immunology/isolation & purification/metabolism ; Humans ; Saccharomyces cerevisiae/genetics ; Transcription Factors/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Whole-genome shotgun sequencing of mitochondria from ancient hair shafts (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-29
    Description: Although the application of sequencing-by-synthesis techniques to DNA extracted from bones has revolutionized the study of ancient DNA, it has been plagued by large fractions of contaminating environmental DNA. The genetic analyses of hair shafts could be a solution: We present 10 previously unexamined Siberian mammoth (Mammuthus primigenius) mitochondrial genomes, sequenced with up to 48-fold coverage. The observed levels of damage-derived sequencing errors were lower than those observed in previously published frozen bone samples, even though one of the specimens was 〉50,000 14C years old and another had been stored for 200 years at room temperature. The method therefore sets the stage for molecular-genetic analysis of museum collections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, M Thomas P -- Tomsho, Lynn P -- Rendulic, Snjezana -- Packard, Michael -- Drautz, Daniela I -- Sher, Andrei -- Tikhonov, Alexei -- Dalen, Love -- Kuznetsova, Tatyana -- Kosintsev, Pavel -- Campos, Paula F -- Higham, Thomas -- Collins, Matthew J -- Wilson, Andrew S -- Shidlovskiy, Fyodor -- Buigues, Bernard -- Ericson, Per G P -- Germonpre, Mietje -- Gotherstrom, Anders -- Iacumin, Paola -- Nikolaev, Vladimir -- Nowak-Kemp, Malgosia -- Willerslev, Eske -- Knight, James R -- Irzyk, Gerard P -- Perbost, Clotilde S -- Fredrikson, Karin M -- Harkins, Timothy T -- Sheridan, Sharon -- Miller, Webb -- Schuster, Stephan C -- HG002238/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2007 Sep 28;317(5846):1927-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17901335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone and Bones/chemistry ; DNA Damage ; DNA, Mitochondrial/chemistry/genetics/*history ; Elephants/*genetics ; Genes, Mitochondrial ; *Genome ; *Hair/chemistry/ultrastructure ; History, Ancient ; Mitochondria/*genetics ; Molecular Sequence Data ; Preservation, Biological ; *Sequence Analysis, DNA ; Siberia ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Revisiting carbon flux through the ocean's twilight zone (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-04-28
    Description: The oceanic biological pump drives sequestration of carbon dioxide in the deep sea via sinking particles. Rapid biological consumption and remineralization of carbon in the "twilight zone" (depths between the euphotic zone and 1000 meters) reduce the efficiency of sequestration. By using neutrally buoyant sediment traps to sample this chronically understudied realm, we measured a transfer efficiency of sinking particulate organic carbon between 150 and 500 meters of 20 and 50% at two contrasting sites. This large variability in transfer efficiency is poorly represented in biogeochemical models. If applied globally, this is equivalent to a difference in carbon sequestration of more than 3 petagrams of carbon per year.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buesseler, Ken O -- Lamborg, Carl H -- Boyd, Philip W -- Lam, Phoebe J -- Trull, Thomas W -- Bidigare, Robert R -- Bishop, James K B -- Casciotti, Karen L -- Dehairs, Frank -- Elskens, Marc -- Honda, Makio -- Karl, David M -- Siegel, David A -- Silver, Mary W -- Steinberg, Deborah K -- Valdes, Jim -- Van Mooy, Benjamin -- Wilson, Stephanie -- New York, N.Y. -- Science. 2007 Apr 27;316(5824):567-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. kbuesseler@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17463282" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carbon/metabolism ; Carbon Dioxide ; Copepoda/physiology ; *Ecosystem ; Food Chain ; Geologic Sediments/chemistry ; Hydrogen-Ion Concentration ; Pacific Ocean ; Phytoplankton/physiology ; *Seawater/chemistry ; Zooplankton/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Population structure mediates sexual conflict in water striders (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-11-07
    Description: Sexual conflict occurs when males and females act against each others' interest, typically resulting in selection favoring harmful males. We performed laboratory experiments on sexual conflict that both confined individuals in isolated groups, which prevents selection acting counter to this conflict, and provided more naturalistic multigroup population structures. We show that in water striders, aggressive male mating behavior was strongly favored within groups but not favored in a multigroup population when individuals can freely disperse among groups. These observations explain the persistence of less-aggressive males within natural populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eldakar, Omar Tonsi -- Dlugos, Michael J -- Pepper, John W -- Wilson, David Sloan -- 5 K12 GM000708/GM/NIGMS NIH HHS/ -- K12 GM000708/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 6;326(5954):816. doi: 10.1126/science.1180183.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Insect Science, University of Arizona, Tucson, AZ 85721, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892974" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression ; Animals ; Female ; Heteroptera/*physiology ; Male ; Mating Preference, Animal ; Population Dynamics ; *Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Multilevel and kin selection in a connected world (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-02-19
    Description: Wild et al. argue that the evolution of reduced virulence can be understood from the perspective of inclusive fitness, obviating the need to evoke group selection as a contributing causal factor. Although they acknowledge the mathematical equivalence of the inclusive fitness and multilevel selection approaches, they conclude that reduced virulence can be viewed entirely as an individual-level adaptation by the parasite. Here we show that their model is a well-known special case of the more general theory of multilevel selection, and that the cause of reduced virulence resides in the opposition of two processes: within-group and among-group selection. This distinction is important in light of the current controversy among evolutionary biologists in which some continue to affirm that natural selection centres only and always at the level of the individual organism or gene, despite mathematical demonstrations that evolutionary dynamics must be described by selection at various levels in the hierarchy of biological organization.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3151728/" 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/PMC3151728/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wade, Michael J -- Wilson, David S -- Goodnight, Charles -- Taylor, Doug -- Bar-Yam, Yaneer -- de Aguiar, Marcus A M -- Stacey, Blake -- Werfel, Justin -- Hoelzer, Guy A -- Brodie, Edmund D 3rd -- Fields, Peter -- Breden, Felix -- Linksvayer, Timothy A -- Fletcher, Jeffrey A -- Richerson, Peter J -- Bever, James D -- Van Dyken, J David -- Zee, Peter -- R01 GM084238/GM/NIGMS NIH HHS/ -- R01 GM084238-02/GM/NIGMS NIH HHS/ -- R01 GM092660/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Feb 18;463(7283):E8-9; discussion E9-10. doi: 10.1038/nature08809.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Indiana University, Bloomington, Indiana 47405, USA. mjwade@indiana.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20164866" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Genetic Fitness/*physiology ; *Models, Biological ; Parasites/*genetics/*pathogenicity ; Selection, Genetic/*physiology ; Virulence/genetics/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 6
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    Phagocytosis: flow cytometric quantitation with fluorescent microspheres (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-01
    Description: The phagocytosis of uniform fluorescent latex particles by pulmonary macrophages in the rat was analyzed by flow cytometric methods. The percentage of phagocytic macrophages and the number of particles per cell were determined from cell-size and fluorescence histograms. A comparison of in vivo and in vitro phagocytosis data showed that the percentage of phagocytic lavaged macrophages reflected the availability of instilled particles. With sodium azide used to model phagocytosis inhibition, it was shown that the percentage of phagocytic cells and the number of particles per cell can be determined simultaneously.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steinkamp, J A -- Wilson, J S -- Saunders, G C -- Stewart, C C -- AI 15563/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 1;215(4528):64-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Flow Cytometry/methods ; Macrophages/*physiology ; Microspheres ; *Phagocytosis ; Pulmonary Alveoli/cytology ; Rats ; Spectrometry, Fluorescence/methods
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Modulation of synapse formation by cyclic adenosine monophosphate (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-18
    Description: Synapses between neuroblastoma-hybrid cells and myotubes exhibit a high degree of plasticity. Increase of cyclic adenosine monophosphate (AMP) levels of the hybrid cells for several days results in the appearance of functional voltage-sensitive Ca2+ channels, which are required for evoked secretion of acetylcholine. The results show that cyclic AMP regulates synaptogenesis by regulating the expression of voltage-sensitive Ca2+ channels, and suggest that cyclic AMP affects posttranslational modifications of some glycoproteins and cellular levels of certain proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nirenberg, M -- Wilson, S -- Higashida, H -- Rotter, A -- Krueger, K -- Busis, N -- Ray, R -- Kenimer, J G -- Adler, M -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):794-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6314503" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Calcium/physiology ; Cell Adhesion ; Cells, Cultured ; Cyclic AMP/*physiology ; Gene Expression Regulation ; Humans ; Membrane Potentials ; Nerve Tissue Proteins/physiology ; Neuromuscular Junction/*physiology ; Neuronal Plasticity ; Receptors, Cell Surface/physiology ; Retina/*physiology ; Synapses/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Purification and properties of Drosophila heat shock activator protein (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-11-27
    Description: Drosophila heat shock activator protein, a rare transacting factor which is induced upon heat shock to bind specifically to the heat shock regulatory sequence in vivo, has been purified from shocked cells to more than 95 percent homogeneity by sequence-specific duplex oligonucleotide affinity chromatography. The purified protein has a relative molecular mass of 110 kilodaltons, binds to the regulatory sequence with great affinity and specificity, and strongly stimulates transcription of the Drosophila hsp70 gene. Studies with this regulatory protein should lead to an understanding of the biochemical pathway underlying the heat shock phenomenon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, C -- Wilson, S -- Walker, B -- Dawid, I -- Paisley, T -- Zimarino, V -- Ueda, H -- New York, N.Y. -- Science. 1987 Nov 27;238(4831):1247-53.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3685975" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Drosophila/*genetics ; *Genes ; *Genes, Regulator ; Heat-Shock Proteins/*genetics ; Kinetics ; Molecular Weight
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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