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  • 1
    Publication Date: 2010-10-29
    Description: The plant SLAC1 anion channel controls turgor pressure in the aperture-defining guard cells of plant stomata, thereby regulating the exchange of water vapour and photosynthetic gases in response to environmental signals such as drought or high levels of carbon dioxide. Here we determine the crystal structure of a bacterial homologue (Haemophilus influenzae) of SLAC1 at 1.20 A resolution, and use structure-inspired mutagenesis to analyse the conductance properties of SLAC1 channels. SLAC1 is a symmetrical trimer composed from quasi-symmetrical subunits, each having ten transmembrane helices arranged from helical hairpin pairs to form a central five-helix transmembrane pore that is gated by an extremely conserved phenylalanine residue. Conformational features indicate a mechanism for control of gating by kinase activation, and electrostatic features of the pore coupled with electrophysiological characteristics indicate that selectivity among different anions is largely a function of the energetic cost of ion dehydration.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3548404/" 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/PMC3548404/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Yu-Hang -- Hu, Lei -- Punta, Marco -- Bruni, Renato -- Hillerich, Brandan -- Kloss, Brian -- Rost, Burkhard -- Love, James -- Siegelbaum, Steven A -- Hendrickson, Wayne A -- R01 GM034102/GM/NIGMS NIH HHS/ -- U54 GM075026/GM/NIGMS NIH HHS/ -- U54 GM095315/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Oct 28;467(7319):1074-80. doi: 10.1038/nature09487.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20981093" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arabidopsis/genetics/metabolism ; Arabidopsis Proteins/*chemistry ; Bacterial Proteins/*chemistry/genetics/metabolism ; Crystallography, X-Ray ; Electric Conductivity ; Haemophilus influenzae/*chemistry/genetics ; Ion Channel Gating ; Membrane Proteins/*chemistry ; Models, Molecular ; Molecular Sequence Data ; Oocytes/metabolism ; Phenylalanine/chemistry/metabolism ; Plant Stomata/*metabolism ; Static Electricity ; *Structural Homology, Protein ; Substrate Specificity ; Xenopus laevis
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2012-04-17
    Description: As with many other viruses, the initial cell attachment of rotaviruses, which are the major causative agent of infantile gastroenteritis, is mediated by interactions with specific cellular glycans. The distally located VP8* domain of the rotavirus spike protein VP4 (ref. 5) mediates such interactions. The existing paradigm is that 'sialidase-sensitive' animal rotavirus strains bind to glycans with terminal sialic acid (Sia), whereas 'sialidase-insensitive' human rotavirus strains bind to glycans with internal Sia such as GM1 (ref. 3). Although the involvement of Sia in the animal strains is firmly supported by crystallographic studies, it is not yet known how VP8* of human rotaviruses interacts with Sia and whether their cell attachment necessarily involves sialoglycans. Here we show that VP8* of a human rotavirus strain specifically recognizes A-type histo-blood group antigen (HBGA) using a glycan array screen comprised of 511 glycans, and that virus infectivity in HT-29 cells is abrogated by anti-A-type antibodies as well as significantly enhanced in Chinese hamster ovary cells genetically modified to express the A-type HBGA, providing a novel paradigm for initial cell attachment of human rotavirus. HBGAs are genetically determined glycoconjugates present in mucosal secretions, epithelia and on red blood cells, and are recognized as susceptibility and cell attachment factors for gastric pathogens like Helicobacter pylori and noroviruses. Our crystallographic studies show that the A-type HBGA binds to the human rotavirus VP8* at the same location as the Sia in the VP8* of animal rotavirus, and suggest how subtle changes within the same structural framework allow for such receptor switching. These results raise the possibility that host susceptibility to specific human rotavirus strains and pathogenesis are influenced by genetically controlled expression of different HBGAs among the world's population.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350622/" 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/PMC3350622/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Liya -- Crawford, Sue E -- Czako, Rita -- Cortes-Penfield, Nicolas W -- Smith, David F -- Le Pendu, Jacques -- Estes, Mary K -- Prasad, B V Venkataram -- AI 080656/AI/NIAID NIH HHS/ -- AI36040/AI/NIAID NIH HHS/ -- GM62116/GM/NIGMS NIH HHS/ -- P30 DK056338/DK/NIDDK NIH HHS/ -- P30 DK56338/DK/NIDDK NIH HHS/ -- P41 GM103694/GM/NIGMS NIH HHS/ -- R01 AI080656/AI/NIAID NIH HHS/ -- U54 GM062116/GM/NIGMS NIH HHS/ -- U54 GM062116-01A1/GM/NIGMS NIH HHS/ -- England -- Nature. 2012 Apr 15;485(7397):256-9. doi: 10.1038/nature10996.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22504179" target="_blank"〉PubMed〈/a〉
    Keywords: ABO Blood-Group System/chemistry/genetics/immunology/*metabolism ; Amino Acid Sequence ; Animals ; CHO Cells ; Cricetinae ; Crystallography, X-Ray ; Erythrocytes/metabolism/virology ; Host Specificity/*physiology ; Humans ; Models, Molecular ; Molecular Sequence Data ; N-Acetylneuraminic Acid/antagonists & inhibitors/chemistry/immunology/metabolism ; RNA-Binding Proteins/chemistry/*metabolism ; Receptors, Virus/chemistry/genetics/*metabolism ; *Rotavirus/chemistry/classification/metabolism/pathogenicity ; Viral Nonstructural Proteins/chemistry/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2012-11-16
    Description: For 10,000 years pigs and humans have shared a close and complex relationship. From domestication to modern breeding practices, humans have shaped the genomes of domestic pigs. Here we present the assembly and analysis of the genome sequence of a female domestic Duroc pig (Sus scrofa) and a comparison with the genomes of wild and domestic pigs from Europe and Asia. Wild pigs emerged in South East Asia and subsequently spread across Eurasia. Our results reveal a deep phylogenetic split between European and Asian wild boars approximately 1 million years ago, and a selective sweep analysis indicates selection on genes involved in RNA processing and regulation. Genes associated with immune response and olfaction exhibit fast evolution. Pigs have the largest repertoire of functional olfactory receptor genes, reflecting the importance of smell in this scavenging animal. The pig genome sequence provides an important resource for further improvements of this important livestock species, and our identification of many putative disease-causing variants extends the potential of the pig as a biomedical model.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3566564/" 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/PMC3566564/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groenen, Martien A M -- Archibald, Alan L -- Uenishi, Hirohide -- Tuggle, Christopher K -- Takeuchi, Yasuhiro -- Rothschild, Max F -- Rogel-Gaillard, Claire -- Park, Chankyu -- Milan, Denis -- Megens, Hendrik-Jan -- Li, Shengting -- Larkin, Denis M -- Kim, Heebal -- Frantz, Laurent A F -- Caccamo, Mario -- Ahn, Hyeonju -- Aken, Bronwen L -- Anselmo, Anna -- Anthon, Christian -- Auvil, Loretta -- Badaoui, Bouabid -- Beattie, Craig W -- Bendixen, Christian -- Berman, Daniel -- Blecha, Frank -- Blomberg, Jonas -- Bolund, Lars -- Bosse, Mirte -- Botti, Sara -- Bujie, Zhan -- Bystrom, Megan -- Capitanu, Boris -- Carvalho-Silva, Denise -- Chardon, Patrick -- Chen, Celine -- Cheng, Ryan -- Choi, Sang-Haeng -- Chow, William -- Clark, Richard C -- Clee, Christopher -- Crooijmans, Richard P M A -- Dawson, Harry D -- Dehais, Patrice -- De Sapio, Fioravante -- Dibbits, Bert -- Drou, Nizar -- Du, Zhi-Qiang -- Eversole, Kellye -- Fadista, Joao -- Fairley, Susan -- Faraut, Thomas -- Faulkner, Geoffrey J -- Fowler, Katie E -- Fredholm, Merete -- Fritz, Eric -- Gilbert, James G R -- Giuffra, Elisabetta -- Gorodkin, Jan -- Griffin, Darren K -- Harrow, Jennifer L -- Hayward, Alexander -- Howe, Kerstin -- Hu, Zhi-Liang -- Humphray, Sean J -- Hunt, Toby -- Hornshoj, Henrik -- Jeon, Jin-Tae -- Jern, Patric -- Jones, Matthew -- Jurka, Jerzy -- Kanamori, Hiroyuki -- Kapetanovic, Ronan -- Kim, Jaebum -- Kim, Jae-Hwan -- Kim, Kyu-Won -- Kim, Tae-Hun -- Larson, Greger -- Lee, Kyooyeol -- Lee, Kyung-Tai -- Leggett, Richard -- Lewin, Harris A -- Li, Yingrui -- Liu, Wansheng -- Loveland, Jane E -- Lu, Yao -- Lunney, Joan K -- Ma, Jian -- Madsen, Ole -- Mann, Katherine -- Matthews, Lucy -- McLaren, Stuart -- Morozumi, Takeya -- Murtaugh, Michael P -- Narayan, Jitendra -- Nguyen, Dinh Truong -- Ni, Peixiang -- Oh, Song-Jung -- Onteru, Suneel -- Panitz, Frank -- Park, Eung-Woo -- Park, Hong-Seog -- Pascal, Geraldine -- Paudel, Yogesh -- Perez-Enciso, Miguel -- Ramirez-Gonzalez, Ricardo -- Reecy, James M -- Rodriguez-Zas, Sandra -- Rohrer, Gary A -- Rund, Lauretta -- Sang, Yongming -- Schachtschneider, Kyle -- Schraiber, Joshua G -- Schwartz, John -- Scobie, Linda -- Scott, Carol -- Searle, Stephen -- Servin, Bertrand -- Southey, Bruce R -- Sperber, Goran -- Stadler, Peter -- Sweedler, Jonathan V -- Tafer, Hakim -- Thomsen, Bo -- Wali, Rashmi -- Wang, Jian -- Wang, Jun -- White, Simon -- Xu, Xun -- Yerle, Martine -- Zhang, Guojie -- Zhang, Jianguo -- Zhang, Jie -- Zhao, Shuhong -- Rogers, Jane -- Churcher, Carol -- Schook, Lawrence B -- 095908/Wellcome Trust/United Kingdom -- 249894/European Research Council/International -- 5 P41 LM006252/LM/NLM NIH HHS/ -- 5 P41LM006252/LM/NLM NIH HHS/ -- BB/E010520/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E010520/2/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E010768/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E011640/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/G004013/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/H005935/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/I025328/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0900950/Medical Research Council/United Kingdom -- P20-RR017686/RR/NCRR NIH HHS/ -- P30 DA018310/DA/NIDA NIH HHS/ -- R13 RR020283A/RR/NCRR NIH HHS/ -- R13 RR032267A/RR/NCRR NIH HHS/ -- R21 DA027548/DA/NIDA NIH HHS/ -- R21 HG006464/HG/NHGRI NIH HHS/ -- T32 AI083196/AI/NIAID NIH HHS/ -- England -- Nature. 2012 Nov 15;491(7424):393-8. doi: 10.1038/nature11622.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Animal Breeding and Genomics Centre, Wageningen University, De Elst 1, 6708 WD, Wageningen, The Netherlands. martien.groenen@wur.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23151582" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Demography ; Genome/*genetics ; Models, Animal ; Molecular Sequence Data ; *Phylogeny ; Population Dynamics ; Sus scrofa/*classification/*genetics
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  • 4
    Publication Date: 2014-08-15
    Description: The murine caspase-11 non-canonical inflammasome responds to various bacterial infections. Caspase-11 activation-induced pyroptosis, in response to cytoplasmic lipopolysaccharide (LPS), is critical for endotoxic shock in mice. The mechanism underlying cytosolic LPS sensing and the responsible pattern recognition receptor are unknown. Here we show that human monocytes, epithelial cells and keratinocytes undergo necrosis upon cytoplasmic delivery of LPS. LPS-induced cytotoxicity was mediated by human caspase-4 that could functionally complement murine caspase-11. Human caspase-4 and the mouse homologue caspase-11 (hereafter referred to as caspase-4/11) and also human caspase-5, directly bound to LPS and lipid A with high specificity and affinity. LPS associated with endogenous caspase-11 in pyroptotic cells. Insect-cell purified caspase-4/11 underwent oligomerization upon LPS binding, resulting in activation of the caspases. Underacylated lipid IVa and lipopolysaccharide from Rhodobacter sphaeroides (LPS-RS) could bind to caspase-4/11 but failed to induce their oligomerization and activation. LPS binding was mediated by the CARD domain of the caspase. Binding-deficient CARD-domain point mutants did not respond to LPS with oligomerization or activation and failed to induce pyroptosis upon LPS electroporation or bacterial infections. The function of caspase-4/5/11 represents a new mode of pattern recognition in immunity and also an unprecedented means of caspase activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, Jianjin -- Zhao, Yue -- Wang, Yupeng -- Gao, Wenqing -- Ding, Jingjin -- Li, Peng -- Hu, Liyan -- Shao, Feng -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Oct 9;514(7521):187-92. doi: 10.1038/nature13683. Epub 2014 Aug 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, National Institute of Biological Sciences, Beijing 102206, China [2] National Institute of Biological Sciences, Beijing 102206, China [3]. ; 1] National Institute of Biological Sciences, Beijing 102206, China [2]. ; National Institute of Biological Sciences, Beijing 102206, China. ; 1] National Institute of Biological Sciences, Beijing 102206, China [2] National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. ; 1] Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, National Institute of Biological Sciences, Beijing 102206, China [2] National Institute of Biological Sciences, Beijing 102206, China [3] National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China [4] National Institute of Biological Sciences, Beijing, Collaborative Innovation Center for Cancer Medicine, Beijing 102206, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25119034" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caspases/chemistry/genetics/immunology/*metabolism ; Caspases, Initiator/chemistry/genetics/immunology/*metabolism ; Cell Death/drug effects ; Cells, Cultured ; Enzyme Activation/drug effects/genetics ; Epithelial Cells/cytology/metabolism ; Genetic Complementation Test ; Humans ; *Immunity, Innate ; Inflammation/enzymology ; Keratinocytes/cytology/metabolism ; Lipid A/metabolism ; Lipopolysaccharides/immunology/*metabolism/pharmacology ; Macrophages/cytology/drug effects/metabolism ; Mice ; Mutant Proteins/chemistry/metabolism ; Necrosis/chemically induced ; Protein Binding ; Protein Multimerization/drug effects/genetics ; Rhodobacter sphaeroides/chemistry/immunology ; Substrate Specificity ; Surface Plasmon Resonance
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  • 5
    Publication Date: 2015-11-03
    Description: DNA methylation is an important epigenetic modification. Ten-eleven translocation (TET) proteins are involved in DNA demethylation through iteratively oxidizing 5-methylcytosine (5mC) into 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC). Here we show that human TET1 and TET2 are more active on 5mC-DNA than 5hmC/5fC-DNA substrates. We determine the crystal structures of TET2-5hmC-DNA and TET2-5fC-DNA complexes at 1.80 A and 1.97 A resolution, respectively. The cytosine portion of 5hmC/5fC is specifically recognized by TET2 in a manner similar to that of 5mC in the TET2-5mC-DNA structure, and the pyrimidine base of 5mC/5hmC/5fC adopts an almost identical conformation within the catalytic cavity. However, the hydroxyl group of 5hmC and carbonyl group of 5fC face towards the opposite direction because the hydroxymethyl group of 5hmC and formyl group of 5fC adopt restrained conformations through forming hydrogen bonds with the 1-carboxylate of NOG and N4 exocyclic nitrogen of cytosine, respectively. Biochemical analyses indicate that the substrate preference of TET2 results from the different efficiencies of hydrogen abstraction in TET2-mediated oxidation. The restrained conformation of 5hmC and 5fC within the catalytic cavity may prevent their abstractable hydrogen(s) adopting a favourable orientation for hydrogen abstraction and thus result in low catalytic efficiency. Our studies demonstrate that the substrate preference of TET2 results from the intrinsic value of its substrates at their 5mC derivative groups and suggest that 5hmC is relatively stable and less prone to further oxidation by TET proteins. Therefore, TET proteins are evolutionarily tuned to be less reactive towards 5hmC and facilitate the generation of 5hmC as a potentially stable mark for regulatory functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Lulu -- Lu, Junyan -- Cheng, Jingdong -- Rao, Qinhui -- Li, Ze -- Hou, Haifeng -- Lou, Zhiyong -- Zhang, Lei -- Li, Wei -- Gong, Wei -- Liu, Mengjie -- Sun, Chang -- Yin, Xiaotong -- Li, Jie -- Tan, Xiangshi -- Wang, Pengcheng -- Wang, Yinsheng -- Fang, Dong -- Cui, Qiang -- Yang, Pengyuan -- He, Chuan -- Jiang, Hualiang -- Luo, Cheng -- Xu, Yanhui -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Nov 5;527(7576):118-22. doi: 10.1038/nature15713. Epub 2015 Oct 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fudan University Shanghai Cancer Center, Institute of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai 200032, China. ; Key Laboratory of Molecular Medicine, Ministry of Education, Department of Systems Biology for Medicine, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai 200032, China. ; State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200433, China. ; Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. ; Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China. ; Laboratory of Structural Biology, Tsinghua University, Beijing 100084, China. ; MOE Laboratory of Protein Science, School of Medicine, Tsinghua University, Beijing 100084, China. ; Department of Chemistry, University of California-Riverside, Riverside, California 92521-0403, USA. ; Theoretical Chemistry Institute, Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA. ; Department of Chemistry and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA. ; Howard Hughes Medical Institute, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26524525" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine/metabolism ; Biocatalysis ; Catalytic Domain ; Crystallography, X-Ray ; Cytosine/analogs & derivatives/metabolism ; DNA/*chemistry/*metabolism ; DNA Methylation ; DNA-Binding Proteins/*chemistry/*metabolism ; Humans ; Hydrogen Bonding ; Models, Molecular ; Oxidation-Reduction ; Protein Binding ; Proto-Oncogene Proteins/*chemistry/*metabolism ; Substrate Specificity
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  • 6
    Publication Date: 2013-09-10
    Description: Replication fork maintenance pathways preserve chromosomes, but their faulty application at nonallelic repeats could generate rearrangements causing cancer, genomic disorders and speciation. Potential causal mechanisms are homologous recombination and error-free postreplication repair (EF-PRR). Homologous recombination repairs damage-induced DNA double-strand breaks (DSBs) and single-ended DSBs within replication. To facilitate homologous recombination, the recombinase RAD51 and mediator BRCA2 form a filament on the 3' DNA strand at a break to enable annealing to the complementary sister chromatid while the RecQ helicase, BLM (Bloom syndrome mutated) suppresses crossing over to prevent recombination. Homologous recombination also stabilizes and restarts replication forks without a DSB. EF-PRR bypasses DNA incongruities that impede replication by ubiquitinating PCNA (proliferating cell nuclear antigen) using the RAD6-RAD18 and UBC13-MMS2-RAD5 ubiquitin ligase complexes. Some components are common to both homologous recombination and EF-PRR such as RAD51 and RAD18. Here we delineate two pathways that spontaneously fuse inverted repeats to generate unstable chromosomal rearrangements in wild-type mouse embryonic stem (ES) cells. Gamma-radiation induced a BLM-regulated pathway that selectively fused identical, but not mismatched, repeats. By contrast, ultraviolet light induced a RAD18-dependent pathway that efficiently fused mismatched repeats. Furthermore, TREX2 (a 3'--〉5' exonuclease) suppressed identical repeat fusion but enhanced mismatched repeat fusion, clearly separating these pathways. TREX2 associated with UBC13 and enhanced PCNA ubiquitination in response to ultraviolet light, consistent with it being a novel member of EF-PRR. RAD18 and TREX2 also suppressed replication fork stalling in response to nucleotide depletion. Interestingly, replication fork stalling induced fusion for identical and mismatched repeats, implicating faulty replication as a causal mechanism for both pathways.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3805358/" 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/PMC3805358/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Lingchuan -- Kim, Tae Moon -- Son, Mi Young -- Kim, Sung-A -- Holland, Cory L -- Tateishi, Satoshi -- Kim, Dong Hyun -- Yew, P Renee -- Montagna, Cristina -- Dumitrache, Lavinia C -- Hasty, Paul -- 1 R01 CA123203-01A1/CA/NCI NIH HHS/ -- 2P01AG017242-12/AG/NIA NIH HHS/ -- P30 CA054174/CA/NCI NIH HHS/ -- P30CA013330/CA/NCI NIH HHS/ -- R01 CA123203/CA/NCI NIH HHS/ -- England -- Nature. 2013 Sep 26;501(7468):569-72. doi: 10.1038/nature12500. Epub 2013 Sep 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Medicine/Institute of Biotechnology, The Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, Texas 78245-3207, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24013173" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosomal Instability/*genetics ; Chromosome Breakage ; Chromosomes, Mammalian/*genetics ; DNA Breaks, Double-Stranded ; DNA Repair/*genetics ; DNA Replication/*genetics ; DNA-Binding Proteins/metabolism ; Embryonic Stem Cells/metabolism ; Exodeoxyribonucleases/metabolism ; Homologous Recombination/*genetics ; Hydroxyurea/pharmacology ; Inverted Repeat Sequences/*genetics ; Mice ; Nucleotides/deficiency/metabolism ; Proliferating Cell Nuclear Antigen/metabolism ; Rad51 Recombinase/metabolism ; RecQ Helicases/metabolism ; Ubiquitin-Conjugating Enzymes/metabolism ; Ubiquitination/radiation effects ; Ultraviolet Rays
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  • 7
    Publication Date: 2011-12-14
    Description: NF-kappaB is crucial for innate immune defence against microbial infection. Inhibition of NF-kappaB signalling has been observed with various bacterial infections. The NF-kappaB pathway critically requires multiple ubiquitin-chain signals of different natures. The question of whether ubiquitin-chain signalling and its specificity in NF-kappaB activation are regulated during infection, and how this regulation takes place, has not been explored. Here we show that human TAB2 and TAB3, ubiquitin-chain sensory proteins involved in NF-kappaB signalling, are directly inactivated by enteropathogenic Escherichia coli NleE, a conserved bacterial type-III-secreted effector responsible for blocking host NF-kappaB signalling. NleE harboured an unprecedented S-adenosyl-l-methionine-dependent methyltransferase activity that specifically modified a zinc-coordinating cysteine in the Npl4 zinc finger (NZF) domains in TAB2 and TAB3. Cysteine-methylated TAB2-NZF and TAB3-NZF (truncated proteins only comprising the NZF domain) lost the zinc ion as well as the ubiquitin-chain binding activity. Ectopically expressed or type-III-secretion-system-delivered NleE methylated TAB2 and TAB3 in host cells and diminished their ubiquitin-chain binding activity. Replacement of the NZF domain of TAB3 with the NleE methylation-insensitive Npl4 NZF domain resulted in NleE-resistant NF-kappaB activation. Given the prevalence of zinc-finger motifs and activation of cysteine thiol by zinc binding, methylation of zinc-finger cysteine might regulate other eukaryotic pathways in addition to NF-kappaB signalling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Li -- Ding, Xiaojun -- Cui, Jixin -- Xu, Hao -- Chen, Jing -- Gong, Yi-Nan -- Hu, Liyan -- Zhou, Yan -- Ge, Jianning -- Lu, Qiuhe -- Liu, Liping -- Chen, She -- Shao, Feng -- England -- Nature. 2011 Dec 11;481(7380):204-8. doi: 10.1038/nature10690.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program in Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22158122" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/chemistry/*metabolism ; Bacterial Secretion Systems ; Cysteine/*metabolism ; Enteropathogenic Escherichia coli/metabolism/pathogenicity ; Escherichia coli Proteins/*metabolism ; Humans ; Intracellular Signaling Peptides and Proteins/chemistry/*metabolism ; MAP Kinase Kinase Kinases/metabolism ; Methionine/analogs & derivatives/metabolism ; Methylation ; Methyltransferases/metabolism ; NF-kappa B/*antagonists & inhibitors/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Signal Transduction ; Substrate Specificity ; TNF Receptor-Associated Factor 6 ; Tumor Necrosis Factor Receptor-Associated Peptides and Proteins/metabolism ; Ubiquitin/*metabolism ; Virulence Factors/*metabolism ; Zinc Fingers
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1992-01-24
    Description: Simian immunodeficiency virus (SIV) is a primate lentivirus related to human immunodeficiency viruses and is an etiologic agent for acquired immunodeficiency syndrome (AIDS)-like diseases in macaques. To date, only inactivated whole virus vaccines have been shown to protect macaques against SIV infection. Protective immunity was elicited by recombinant subunit vaccines. Four Macaca fascicularis were immunized with recombinant vaccinia virus expressing SIVmne gp160 and were boosted with gp160 produced in baculovirus-infected cells. All four animals were protected against an intravenous challenge of the homologous virus at one to nine animal-infectious doses. These results indicate that immunization with viral envelope antigens alone is sufficient to elicit protective immunity against a primate immunodeficiency virus. The combination immunization regimen, similar to one now being evaluated in humans as candidate human immunodeficiency virus (HIV)-1 vaccines, appears to be an effective way to elicit such immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, S L -- Abrams, K -- Barber, G N -- Moran, P -- Zarling, J M -- Langlois, A J -- Kuller, L -- Morton, W R -- Benveniste, R E -- AI26503/AI/NIAID NIH HHS/ -- R01 AI28065/AI/NIAID NIH HHS/ -- RR00166/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1992 Jan 24;255(5043):456-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bristol-Myers Squibb Pharmaceutical Research Institute, Seattle, WA 98121.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1531159" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA, Viral/genetics ; Gene Products, env ; Genetic Vectors ; Lymphocyte Activation ; Macaca fascicularis ; Molecular Sequence Data ; Neutralization Tests ; Oligonucleotides/chemistry ; Polymerase Chain Reaction ; Simian Acquired Immunodeficiency Syndrome/immunology/*prevention & control ; Simian Immunodeficiency Virus/*immunology ; T-Lymphocytes, Helper-Inducer/immunology ; Time Factors ; Vaccination ; Vaccines, Synthetic/*immunology ; Viral Vaccines/*immunology
    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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  • 9
    Publication Date: 2009-04-25
    Description: To understand the biology and evolution of ruminants, the cattle genome was sequenced to about sevenfold coverage. The cattle genome contains a minimum of 22,000 genes, with a core set of 14,345 orthologs shared among seven mammalian species of which 1217 are absent or undetected in noneutherian (marsupial or monotreme) genomes. Cattle-specific evolutionary breakpoint regions in chromosomes have a higher density of segmental duplications, enrichment of repetitive elements, and species-specific variations in genes associated with lactation and immune responsiveness. Genes involved in metabolism are generally highly conserved, although five metabolic genes are deleted or extensively diverged from their human orthologs. The cattle genome sequence thus provides a resource for understanding mammalian evolution and accelerating livestock genetic improvement for milk and meat production.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943200/" 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/PMC2943200/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bovine Genome Sequencing and Analysis Consortium -- Elsik, Christine G -- Tellam, Ross L -- Worley, Kim C -- Gibbs, Richard A -- Muzny, Donna M -- Weinstock, George M -- Adelson, David L -- Eichler, Evan E -- Elnitski, Laura -- Guigo, Roderic -- Hamernik, Debora L -- Kappes, Steve M -- Lewin, Harris A -- Lynn, David J -- Nicholas, Frank W -- Reymond, Alexandre -- Rijnkels, Monique -- Skow, Loren C -- Zdobnov, Evgeny M -- Schook, Lawrence -- Womack, James -- Alioto, Tyler -- Antonarakis, Stylianos E -- Astashyn, Alex -- Chapple, Charles E -- Chen, Hsiu-Chuan -- Chrast, Jacqueline -- Camara, Francisco -- Ermolaeva, Olga -- Henrichsen, Charlotte N -- Hlavina, Wratko -- Kapustin, Yuri -- Kiryutin, Boris -- Kitts, Paul -- Kokocinski, Felix -- Landrum, Melissa -- Maglott, Donna -- Pruitt, Kim -- Sapojnikov, Victor -- Searle, Stephen M -- Solovyev, Victor -- Souvorov, Alexandre -- Ucla, Catherine -- Wyss, Carine -- Anzola, Juan M -- Gerlach, Daniel -- Elhaik, Eran -- Graur, Dan -- Reese, Justin T -- Edgar, Robert C -- McEwan, John C -- Payne, Gemma M -- Raison, Joy M -- Junier, Thomas -- Kriventseva, Evgenia V -- Eyras, Eduardo -- Plass, Mireya -- Donthu, Ravikiran -- Larkin, Denis M -- Reecy, James -- Yang, Mary Q -- Chen, Lin -- Cheng, Ze -- Chitko-McKown, Carol G -- Liu, George E -- Matukumalli, Lakshmi K -- Song, Jiuzhou -- Zhu, Bin -- Bradley, Daniel G -- Brinkman, Fiona S L -- Lau, Lilian P L -- Whiteside, Matthew D -- Walker, Angela -- Wheeler, Thomas T -- Casey, Theresa -- German, J Bruce -- Lemay, Danielle G -- Maqbool, Nauman J -- Molenaar, Adrian J -- Seo, Seongwon -- Stothard, Paul -- Baldwin, Cynthia L -- Baxter, Rebecca -- Brinkmeyer-Langford, Candice L -- Brown, Wendy C -- Childers, Christopher P -- Connelley, Timothy -- Ellis, Shirley A -- Fritz, Krista -- Glass, Elizabeth J -- Herzig, Carolyn T A -- Iivanainen, Antti -- Lahmers, Kevin K -- Bennett, Anna K -- Dickens, C Michael -- Gilbert, James G R -- Hagen, Darren E -- Salih, Hanni -- Aerts, Jan -- Caetano, Alexandre R -- Dalrymple, Brian -- Garcia, Jose Fernando -- Gill, Clare A -- Hiendleder, Stefan G -- Memili, Erdogan -- Spurlock, Diane -- Williams, John L -- Alexander, Lee -- Brownstein, Michael J -- Guan, Leluo -- Holt, Robert A -- Jones, Steven J M -- Marra, Marco A -- Moore, Richard -- Moore, Stephen S -- Roberts, Andy -- Taniguchi, Masaaki -- Waterman, Richard C -- Chacko, Joseph -- Chandrabose, Mimi M -- Cree, Andy -- Dao, Marvin Diep -- Dinh, Huyen H -- Gabisi, Ramatu Ayiesha -- Hines, Sandra -- Hume, Jennifer -- Jhangiani, Shalini N -- Joshi, Vandita -- Kovar, Christie L -- Lewis, Lora R -- Liu, Yih-Shin -- Lopez, John -- Morgan, Margaret B -- Nguyen, Ngoc Bich -- Okwuonu, Geoffrey O -- Ruiz, San Juana -- Santibanez, Jireh -- Wright, Rita A -- Buhay, Christian -- Ding, Yan -- Dugan-Rocha, Shannon -- Herdandez, Judith -- Holder, Michael -- Sabo, Aniko -- Egan, Amy -- Goodell, Jason -- Wilczek-Boney, Katarzyna -- Fowler, Gerald R -- Hitchens, Matthew Edward -- Lozado, Ryan J -- Moen, Charles -- Steffen, David -- Warren, James T -- Zhang, Jingkun -- Chiu, Readman -- Schein, Jacqueline E -- Durbin, K James -- Havlak, Paul -- Jiang, Huaiyang -- Liu, Yue -- Qin, Xiang -- Ren, Yanru -- Shen, Yufeng -- Song, Henry -- Bell, Stephanie Nicole -- Davis, Clay -- Johnson, Angela Jolivet -- Lee, Sandra -- Nazareth, Lynne V -- Patel, Bella Mayurkumar -- Pu, Ling-Ling -- Vattathil, Selina -- Williams, Rex Lee Jr -- Curry, Stacey -- Hamilton, Cerissa -- Sodergren, Erica -- Wheeler, David A -- Barris, Wes -- Bennett, Gary L -- Eggen, Andre -- Green, Ronnie D -- Harhay, Gregory P -- Hobbs, Matthew -- Jann, Oliver -- Keele, John W -- Kent, Matthew P -- Lien, Sigbjorn -- McKay, Stephanie D -- McWilliam, Sean -- Ratnakumar, Abhirami -- Schnabel, Robert D -- Smith, Timothy -- Snelling, Warren M -- Sonstegard, Tad S -- Stone, Roger T -- Sugimoto, Yoshikazu -- Takasuga, Akiko -- Taylor, Jeremy F -- Van Tassell, Curtis P -- Macneil, Michael D -- Abatepaulo, Antonio R R -- Abbey, Colette A -- Ahola, Virpi -- Almeida, Iassudara G -- Amadio, Ariel F -- Anatriello, Elen -- Bahadue, Suria M -- Biase, Fernando H -- Boldt, Clayton R -- Carroll, Jeffery A -- Carvalho, Wanessa A -- Cervelatti, Eliane P -- Chacko, Elsa -- Chapin, Jennifer E -- Cheng, Ye -- Choi, Jungwoo -- Colley, Adam J -- de Campos, Tatiana A -- De Donato, Marcos -- Santos, Isabel K F de Miranda -- de Oliveira, Carlo J F -- Deobald, Heather -- Devinoy, Eve -- Donohue, Kaitlin E -- Dovc, Peter -- Eberlein, Annett -- Fitzsimmons, Carolyn J -- Franzin, Alessandra M -- Garcia, Gustavo R -- Genini, Sem -- Gladney, Cody J -- Grant, Jason R -- Greaser, Marion L -- Green, Jonathan A -- Hadsell, Darryl L -- Hakimov, Hatam A -- Halgren, Rob -- Harrow, Jennifer L -- Hart, Elizabeth A -- Hastings, Nicola -- Hernandez, Marta -- Hu, Zhi-Liang -- Ingham, Aaron -- Iso-Touru, Terhi -- Jamis, Catherine -- Jensen, Kirsty -- Kapetis, Dimos -- Kerr, Tovah -- Khalil, Sari S -- Khatib, Hasan -- Kolbehdari, Davood -- Kumar, Charu G -- Kumar, Dinesh -- Leach, Richard -- Lee, Justin C-M -- Li, Changxi -- Logan, Krystin M -- Malinverni, Roberto -- Marques, Elisa -- Martin, William F -- Martins, Natalia F -- Maruyama, Sandra R -- Mazza, Raffaele -- McLean, Kim L -- Medrano, Juan F -- Moreno, Barbara T -- More, Daniela D -- Muntean, Carl T -- Nandakumar, Hari P -- Nogueira, Marcelo F G -- Olsaker, Ingrid -- Pant, Sameer D -- Panzitta, Francesca -- Pastor, Rosemeire C P -- Poli, Mario A -- Poslusny, Nathan -- Rachagani, Satyanarayana -- Ranganathan, Shoba -- Razpet, Andrej -- Riggs, Penny K -- Rincon, Gonzalo -- Rodriguez-Osorio, Nelida -- Rodriguez-Zas, Sandra L -- Romero, Natasha E -- Rosenwald, Anne -- Sando, Lillian -- Schmutz, Sheila M -- Shen, Libing -- Sherman, Laura -- Southey, Bruce R -- Lutzow, Ylva Strandberg -- Sweedler, Jonathan V -- Tammen, Imke -- Telugu, Bhanu Prakash V L -- Urbanski, Jennifer M -- Utsunomiya, Yuri T -- Verschoor, Chris P -- Waardenberg, Ashley J -- Wang, Zhiquan -- Ward, Robert -- Weikard, Rosemarie -- Welsh, Thomas H Jr -- White, Stephen N -- Wilming, Laurens G -- Wunderlich, Kris R -- Yang, Jianqi -- Zhao, Feng-Qi -- 062023/Wellcome Trust/United Kingdom -- 077198/Wellcome Trust/United Kingdom -- BBS/B/13438/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBS/B/13446/Biotechnology and Biological Sciences Research Council/United Kingdom -- P30 DA018310/DA/NIDA NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- U54 HG003273-04/HG/NHGRI NIH HHS/ -- U54 HG003273-04S1/HG/NHGRI NIH HHS/ -- U54 HG003273-05/HG/NHGRI NIH HHS/ -- U54 HG003273-05S1/HG/NHGRI NIH HHS/ -- U54 HG003273-05S2/HG/NHGRI NIH HHS/ -- U54 HG003273-06/HG/NHGRI NIH HHS/ -- U54 HG003273-06S1/HG/NHGRI NIH HHS/ -- U54 HG003273-06S2/HG/NHGRI NIH HHS/ -- U54 HG003273-07/HG/NHGRI NIH HHS/ -- U54 HG003273-08/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 24;324(5926):522-8. doi: 10.1126/science.1169588.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19390049" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Animals ; Animals, Domestic ; *Biological Evolution ; Cattle ; Evolution, Molecular ; Female ; Genetic Variation ; *Genome ; Humans ; Male ; MicroRNAs/genetics ; Molecular Sequence Data ; Proteins/genetics ; Sequence Analysis, DNA ; Species Specificity ; Synteny
    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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  • 10
    Publication Date: 2014-10-11
    Description: Limbless organisms such as snakes can navigate nearly all terrain. In particular, desert-dwelling sidewinder rattlesnakes (Crotalus cerastes) operate effectively on inclined granular media (such as sand dunes) that induce failure in field-tested limbless robots through slipping and pitching. Our laboratory experiments reveal that as granular incline angle increases, sidewinder rattlesnakes increase the length of their body in contact with the sand. Implementing this strategy in a physical robot model of the snake enables the device to ascend sandy slopes close to the angle of maximum slope stability. Plate drag experiments demonstrate that granular yield stresses decrease with increasing incline angle. Together, these three approaches demonstrate how sidewinding with contact-length control mitigates failure on granular media.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marvi, Hamidreza -- Gong, Chaohui -- Gravish, Nick -- Astley, Henry -- Travers, Matthew -- Hatton, Ross L -- Mendelson, Joseph R 3rd -- Choset, Howie -- Hu, David L -- Goldman, Daniel I -- New York, N.Y. -- Science. 2014 Oct 10;346(6206):224-9. doi: 10.1126/science.1255718.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA. School of Physics, Georgia Institute of Technology, Atlanta, GA, USA. ; Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA. ; School of Physics, Georgia Institute of Technology, Atlanta, GA, USA. ; School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvallis, OR, USA. ; School of Biology, Georgia Institute of Technology, Atlanta, GA, USA. Department of Herpetology, Zoo Atlanta, Atlanta, GA, USA. ; School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA. School of Physics, Georgia Institute of Technology, Atlanta, GA, USA. School of Biology, Georgia Institute of Technology, Atlanta, GA, USA. ; School of Physics, Georgia Institute of Technology, Atlanta, GA, USA. daniel.goldman@physics.gatech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25301625" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Size ; Crotalus/*anatomy & histology/*physiology ; *Locomotion ; Robotics/*instrumentation ; *Silicon Dioxide ; Surface Properties
    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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