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  • 1
    Publication Date: 2012-06-09
    Description: Axonal and synaptic degeneration is a hallmark of peripheral neuropathy, brain injury, and neurodegenerative disease. Axonal degeneration has been proposed to be mediated by an active autodestruction program, akin to apoptotic cell death; however, loss-of-function mutations capable of potently blocking axon self-destruction have not been described. Here, we show that loss of the Drosophila Toll receptor adaptor dSarm (sterile alpha/Armadillo/Toll-Interleukin receptor homology domain protein) cell-autonomously suppresses Wallerian degeneration for weeks after axotomy. Severed mouse Sarm1 null axons exhibit remarkable long-term survival both in vivo and in vitro, indicating that Sarm1 prodegenerative signaling is conserved in mammals. Our results provide direct evidence that axons actively promote their own destruction after injury and identify dSarm/Sarm1 as a member of an ancient axon death signaling pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Osterloh, Jeannette M -- Yang, Jing -- Rooney, Timothy M -- Fox, A Nicole -- Adalbert, Robert -- Powell, Eric H -- Sheehan, Amy E -- Avery, Michelle A -- Hackett, Rachel -- Logan, Mary A -- MacDonald, Jennifer M -- Ziegenfuss, Jennifer S -- Milde, Stefan -- Hou, Ying-Ju -- Nathan, Carl -- Ding, Aihao -- Brown, Robert H Jr -- Conforti, Laura -- Coleman, Michael -- Tessier-Lavigne, Marc -- Zuchner, Stephan -- Freeman, Marc R -- 5R01-NS050557-05/NS/NINDS NIH HHS/ -- AI030165/AI/NIAID NIH HHS/ -- R01NS059991/NS/NINDS NIH HHS/ -- R01NS072248/NS/NINDS NIH HHS/ -- RC2-NS070-342/NS/NINDS NIH HHS/ -- U54NS065712/NS/NINDS NIH HHS/ -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Jul 27;337(6093):481-4. doi: 10.1126/science.1223899. Epub 2012 Jun 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22678360" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Apoptosis ; Armadillo Domain Proteins/analysis/*genetics/*physiology ; Axons/*physiology/ultrastructure ; Axotomy ; Cell Survival ; Cells, Cultured ; Cytoskeletal Proteins/analysis/*genetics/*physiology ; Denervation ; Drosophila/embryology/genetics/physiology ; Drosophila Proteins/analysis/*genetics/*physiology ; Mice ; Mutation ; Neurons/*physiology ; Sciatic Nerve/injuries/physiology ; Signal Transduction ; Superior Cervical Ganglion/cytology ; Tissue Culture Techniques ; *Wallerian Degeneration
    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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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2013-10-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, X Jin -- New York, N.Y. -- Science. 2013 Oct 18;342(6156):310. doi: 10.1126/science.342.6156.310-a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24136949" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Animal Diseases/epidemiology ; Animals ; Child, Preschool ; China ; Female ; Humans ; Male ; Neoplasms/epidemiology ; Plant Diseases/statistics & numerical data ; Rural Population/statistics & numerical data/trends ; Transients and Migrants/statistics & numerical data ; Unemployment/statistics & numerical data/trends ; Urban Population/statistics & numerical data/*trends ; Urbanization/*trends
    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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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2013-04-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, X Jin -- Zhang, Donghui -- Xu, Mi -- Li, Jinying -- New York, N.Y. -- Science. 2013 Apr 12;340(6129):142. doi: 10.1126/science.340.6129.142-a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23580510" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 4
    Publication Date: 2013-06-01
    Description: A genome-wide association study (GWAS) of educational attainment was conducted in a discovery sample of 101,069 individuals and a replication sample of 25,490. Three independent single-nucleotide polymorphisms (SNPs) are genome-wide significant (rs9320913, rs11584700, rs4851266), and all three replicate. Estimated effects sizes are small (coefficient of determination R(2) approximately 0.02%), approximately 1 month of schooling per allele. A linear polygenic score from all measured SNPs accounts for approximately 2% of the variance in both educational attainment and cognitive function. Genes in the region of the loci have previously been associated with health, cognitive, and central nervous system phenotypes, and bioinformatics analyses suggest the involvement of the anterior caudate nucleus. These findings provide promising candidate SNPs for follow-up work, and our effect size estimates can anchor power analyses in social-science genetics.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3751588/" 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/PMC3751588/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rietveld, Cornelius A -- Medland, Sarah E -- Derringer, Jaime -- Yang, Jian -- Esko, Tonu -- Martin, Nicolas W -- Westra, Harm-Jan -- Shakhbazov, Konstantin -- Abdellaoui, Abdel -- Agrawal, Arpana -- Albrecht, Eva -- Alizadeh, Behrooz Z -- Amin, Najaf -- Barnard, John -- Baumeister, Sebastian E -- Benke, Kelly S -- Bielak, Lawrence F -- Boatman, Jeffrey A -- Boyle, Patricia A -- Davies, Gail -- de Leeuw, Christiaan -- Eklund, Niina -- Evans, Daniel S -- Ferhmann, Rudolf -- Fischer, Krista -- Gieger, Christian -- Gjessing, Hakon K -- Hagg, Sara -- Harris, Jennifer R -- Hayward, Caroline -- Holzapfel, Christina -- Ibrahim-Verbaas, Carla A -- Ingelsson, Erik -- Jacobsson, Bo -- Joshi, Peter K -- Jugessur, Astanand -- Kaakinen, Marika -- Kanoni, Stavroula -- Karjalainen, Juha -- Kolcic, Ivana -- Kristiansson, Kati -- Kutalik, Zoltan -- Lahti, Jari -- Lee, Sang H -- Lin, Peng -- Lind, Penelope A -- Liu, Yongmei -- Lohman, Kurt -- Loitfelder, Marisa -- McMahon, George -- Vidal, Pedro Marques -- Meirelles, Osorio -- Milani, Lili -- Myhre, Ronny -- Nuotio, Marja-Liisa -- Oldmeadow, Christopher J -- Petrovic, Katja E -- Peyrot, Wouter J -- Polasek, Ozren -- Quaye, Lydia -- Reinmaa, Eva -- Rice, John P -- Rizzi, Thais S -- Schmidt, Helena -- Schmidt, Reinhold -- Smith, Albert V -- Smith, Jennifer A -- Tanaka, Toshiko -- Terracciano, Antonio -- van der Loos, Matthijs J H M -- Vitart, Veronique -- Volzke, Henry -- Wellmann, Jurgen -- Yu, Lei -- Zhao, Wei -- Allik, Juri -- Attia, John R -- Bandinelli, Stefania -- Bastardot, Francois -- Beauchamp, Jonathan -- Bennett, David A -- Berger, Klaus -- Bierut, Laura J -- Boomsma, Dorret I -- Bultmann, Ute -- Campbell, Harry -- Chabris, Christopher F -- Cherkas, Lynn -- Chung, Mina K -- Cucca, Francesco -- de Andrade, Mariza -- De Jager, Philip L -- De Neve, Jan-Emmanuel -- Deary, Ian J -- Dedoussis, George V -- Deloukas, Panos -- Dimitriou, Maria -- Eiriksdottir, Guethny -- Elderson, Martin F -- Eriksson, Johan G -- Evans, David M -- Faul, Jessica D -- Ferrucci, Luigi -- Garcia, Melissa E -- Gronberg, Henrik -- Guethnason, Vilmundur -- Hall, Per -- Harris, Juliette M -- Harris, Tamara B -- Hastie, Nicholas D -- Heath, Andrew C -- Hernandez, Dena G -- Hoffmann, Wolfgang -- Hofman, Adriaan -- Holle, Rolf -- Holliday, Elizabeth G -- Hottenga, Jouke-Jan -- Iacono, William G -- Illig, Thomas -- Jarvelin, Marjo-Riitta -- Kahonen, Mika -- Kaprio, Jaakko -- Kirkpatrick, Robert M -- Kowgier, Matthew -- Latvala, Antti -- Launer, Lenore J -- Lawlor, Debbie A -- Lehtimaki, Terho -- Li, Jingmei -- Lichtenstein, Paul -- Lichtner, Peter -- Liewald, David C -- Madden, Pamela A -- Magnusson, Patrik K E -- Makinen, Tomi E -- Masala, Marco -- McGue, Matt -- Metspalu, Andres -- Mielck, Andreas -- Miller, Michael B -- Montgomery, Grant W -- Mukherjee, Sutapa -- Nyholt, Dale R -- Oostra, Ben A -- Palmer, Lyle J -- Palotie, Aarno -- Penninx, Brenda W J H -- Perola, Markus -- Peyser, Patricia A -- Preisig, Martin -- Raikkonen, Katri -- Raitakari, Olli T -- Realo, Anu -- Ring, Susan M -- Ripatti, Samuli -- Rivadeneira, Fernando -- Rudan, Igor -- Rustichini, Aldo -- Salomaa, Veikko -- Sarin, Antti-Pekka -- Schlessinger, David -- Scott, Rodney J -- Snieder, Harold -- St Pourcain, Beate -- Starr, John M -- Sul, Jae Hoon -- Surakka, Ida -- Svento, Rauli -- Teumer, Alexander -- LifeLines Cohort Study -- Tiemeier, Henning -- van Rooij, Frank J A -- Van Wagoner, David R -- Vartiainen, Erkki -- Viikari, Jorma -- Vollenweider, Peter -- Vonk, Judith M -- Waeber, Gerard -- Weir, David R -- Wichmann, H-Erich -- Widen, Elisabeth -- Willemsen, Gonneke -- Wilson, James F -- Wright, Alan F -- Conley, Dalton -- Davey-Smith, George -- Franke, Lude -- Groenen, Patrick J F -- Hofman, Albert -- Johannesson, Magnus -- Kardia, Sharon L R -- Krueger, Robert F -- Laibson, David -- Martin, Nicholas G -- Meyer, Michelle N -- Posthuma, Danielle -- Thurik, A Roy -- Timpson, Nicholas J -- Uitterlinden, Andre G -- van Duijn, Cornelia M -- Visscher, Peter M -- Benjamin, Daniel J -- Cesarini, David -- Koellinger, Philipp D -- AA09367/AA/NIAAA NIH HHS/ -- AA11886/AA/NIAAA NIH HHS/ -- BB/F019394/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- CZB/4/710/Chief Scientist Office/United Kingdom -- DA024417/DA/NIDA NIH HHS/ -- DA029377/DA/NIDA NIH HHS/ -- DA05147/DA/NIDA NIH HHS/ -- DA13240/DA/NIDA NIH HHS/ -- ETM/55/Chief Scientist Office/United Kingdom -- F31 DA029377/DA/NIDA NIH HHS/ -- G0600705/Medical Research Council/United Kingdom -- G0700704/Medical Research Council/United Kingdom -- G9815508/Medical Research Council/United Kingdom -- K05 AA017688/AA/NIAAA NIH HHS/ -- MC_PC_U127561128/Medical Research Council/United Kingdom -- MC_UU_12013/1/Medical Research Council/United Kingdom -- MC_UU_12013/3/Medical Research Council/United Kingdom -- MC_UU_12013/5/Medical Research Council/United Kingdom -- MH016880/MH/NIMH NIH HHS/ -- MH066140/MH/NIMH NIH HHS/ -- MR/K026992/1/Medical Research Council/United Kingdom -- P01 AG005842/AG/NIA NIH HHS/ -- P01 CA089392/CA/NCI NIH HHS/ -- P01 GM099568/GM/NIGMS NIH HHS/ -- P01-AG005842/AG/NIA NIH HHS/ -- P01-AG005842-20S2/AG/NIA NIH HHS/ -- P30 AG012810/AG/NIA NIH HHS/ -- P30-AG012810/AG/NIA NIH HHS/ -- R01 AA009367/AA/NIAAA NIH HHS/ -- R01 AA011886/AA/NIAAA NIH HHS/ -- R01 DA013240/DA/NIDA NIH HHS/ -- R01 HL090620/HL/NHLBI NIH HHS/ -- R01 HL105756/HL/NHLBI NIH HHS/ -- R01 HL111314/HL/NHLBI NIH HHS/ -- R01 MH066140/MH/NIMH NIH HHS/ -- R37 DA005147/DA/NIDA NIH HHS/ -- T32 AG000186/AG/NIA NIH HHS/ -- T32 MH016880/MH/NIMH NIH HHS/ -- T32-AG000186-23/AG/NIA NIH HHS/ -- U01 AG009740/AG/NIA NIH HHS/ -- U01 DA024417/DA/NIDA NIH HHS/ -- Z01 AG001050-01/Intramural NIH HHS/ -- ZIA AG000196-03/Intramural NIH HHS/ -- ZIA AG000196-04/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2013 Jun 21;340(6139):1467-71. doi: 10.1126/science.1235488. Epub 2013 May 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Applied Economics, Erasmus School of Economics, Erasmus University Rotterdam, Rotterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23722424" target="_blank"〉PubMed〈/a〉
    Keywords: Cognition ; *Educational Status ; Endophenotypes ; Female ; Genetic Loci ; *Genome-Wide Association Study ; Humans ; Male ; Multifactorial Inheritance ; *Polymorphism, Single Nucleotide
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  • 5
    Publication Date: 2013-01-05
    Description: The ubiquitin system regulates virtually all aspects of cellular function. We report a method to target the myriad enzymes that govern ubiquitination of protein substrates. We used massively diverse combinatorial libraries of ubiquitin variants to develop inhibitors of four deubiquitinases (DUBs) and analyzed the DUB-inhibitor complexes with crystallography. We extended the selection strategy to the ubiquitin conjugating (E2) and ubiquitin ligase (E3) enzymes and found that ubiquitin variants can also enhance enzyme activity. Last, we showed that ubiquitin variants can bind selectively to ubiquitin-binding domains. Ubiquitin variants exhibit selective function in cells and thus enable orthogonal modulation of specific enzymatic steps in the ubiquitin system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815447/" 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/PMC3815447/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ernst, Andreas -- Avvakumov, George -- Tong, Jiefei -- Fan, Yihui -- Zhao, Yanling -- Alberts, Philipp -- Persaud, Avinash -- Walker, John R -- Neculai, Ana-Mirela -- Neculai, Dante -- Vorobyov, Andrew -- Garg, Pankaj -- Beatty, Linda -- Chan, Pak-Kei -- Juang, Yu-Chi -- Landry, Marie-Claude -- Yeh, Christina -- Zeqiraj, Elton -- Karamboulas, Konstantina -- Allali-Hassani, Abdellah -- Vedadi, Masoud -- Tyers, Mike -- Moffat, Jason -- Sicheri, Frank -- Pelletier, Laurence -- Durocher, Daniel -- Raught, Brian -- Rotin, Daniela -- Yang, Jianhua -- Moran, Michael F -- Dhe-Paganon, Sirano -- Sidhu, Sachdev S -- 092076/Wellcome Trust/United Kingdom -- 092381/Wellcome Trust/United Kingdom -- 1R01NS072420-01/Canadian Institutes of Health Research/Canada -- MOP-102536/Canadian Institutes of Health Research/Canada -- MOP-111149/Canadian Institutes of Health Research/Canada -- MOP-13494/Canadian Institutes of Health Research/Canada -- MOP-57795/Canadian Institutes of Health Research/Canada -- R01 NS072420/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2013 Feb 1;339(6119):590-5. doi: 10.1126/science.1230161. Epub 2013 Jan 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Terrence Donnelly Center for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23287719" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Combinatorial Chemistry Techniques ; Conserved Sequence ; Drug Design ; Endopeptidases/chemistry/*metabolism ; HEK293 Cells ; Humans ; Molecular Sequence Data ; Protease Inhibitors/chemistry/*isolation & purification/pharmacology ; Protein Conformation ; Protein Structure, Secondary ; Small Molecule Libraries ; Ubiquitin/chemistry/genetics/*metabolism ; Ubiquitin Thiolesterase/chemistry/*metabolism ; Ubiquitin-Conjugating Enzymes/chemistry/metabolism ; Ubiquitin-Protein Ligases/chemistry/metabolism ; Ubiquitination/*drug effects
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2014-05-09
    Description: Gusakov critiques our methodology for comparing the cellulolytic activity of the bacterial cellulase CelA with the fungal cellulase Cel7A. We address his concerns by clarifying some misconceptions, carefully referencing the literature, and justifying our approach to point out that the results from our study still stand.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunecky, Roman -- Alahuhta, Markus -- Xu, Qi -- Donohoe, Bryon S -- Crowley, Michael F -- Kataeva, Irina A -- Yang, Sung-Jae -- Resch, Michael G -- Adams, Michael W W -- Lunin, Vladimir V -- Himmel, Michael E -- Bomble, Yannick J -- New York, N.Y. -- Science. 2014 May 9;344(6184):578. doi: 10.1126/science.1251701.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biosciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24812382" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*enzymology ; Bacterial Proteins/*chemistry ; Cellulase/*chemistry ; Cellulose/*chemistry
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2012-03-10
    Description: It is unknown how the composition and structure of DNA within the cell affect spontaneous mutations. Theory suggests that in eukaryotic genomes, nucleosomal DNA undergoes fewer C--〉T mutations because of suppressed cytosine hydrolytic deamination relative to nucleosome-depleted DNA. Comparative genomic analyses and a mutation accumulation experiment showed that nucleosome occupancy nearly eliminated cytosine deamination, resulting in an ~50% decrease of the C--〉T mutation rate in nucleosomal DNA. Furthermore, the rates of G--〉T and A--〉T mutations were also about twofold suppressed by nucleosomes. On the basis of these results, we conclude that nucleosome-dependent mutation spectra affect eukaryotic genome structure and evolution and may have implications for understanding the origin of mutations in cancers and in induced pluripotent stem cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Xiaoshu -- Chen, Zhidong -- Chen, Han -- Su, Zhijian -- Yang, Jianfeng -- Lin, Fangqin -- Shi, Suhua -- He, Xionglei -- New York, N.Y. -- Science. 2012 Mar 9;335(6073):1235-8. doi: 10.1126/science.1217580.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Bio-control, College of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22403392" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Pairing ; Base Sequence ; Caenorhabditis elegans/*genetics ; Cytosine/chemistry/metabolism ; DNA, Fungal/chemistry/genetics ; DNA, Helminth/chemistry/genetics ; DNA, Intergenic ; Deamination ; Genome, Fungal ; Germ Cells ; Models, Genetic ; *Mutation Rate ; Nucleosomes/*chemistry/*physiology ; Oryzias/embryology/*genetics ; *Point Mutation ; Polymorphism, Single Nucleotide ; Saccharomyces/genetics ; Saccharomyces cerevisiae/*genetics ; Sequence Analysis, DNA
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2012-09-18
    Description: Hybrid sterility is a major form of postzygotic reproductive isolation that restricts gene flow between populations. Cultivated rice (Oryza sativa L.) consists of two subspecies, indica and japonica; inter-subspecific hybrids are usually sterile. We show that a killer-protector system at the S5 locus encoded by three tightly linked genes [Open Reading Frame 3 (ORF3) to ORF5] regulates fertility in indica-japonica hybrids. During female sporogenesis, the action of ORF5+ (killer) and ORF4+ (partner) causes endoplasmic reticulum (ER) stress. ORF3+ (protector) prevents ER stress and produces normal gametes, but ORF3- cannot prevent ER stress, resulting in premature programmed cell death and leads to embryo-sac abortion. Preferential transmission of ORF3+ gametes results in segregation distortion in the progeny. These results add to our understanding of differences between indica and japonica rice and may aid in rice genetic improvement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Jiangyi -- Zhao, Xiaobo -- Cheng, Ke -- Du, Hongyi -- Ouyang, Yidan -- Chen, Jiongjiong -- Qiu, Shuqing -- Huang, Jianyan -- Jiang, Yunhe -- Jiang, Liwen -- Ding, Jihua -- Wang, Jia -- Xu, Caiguo -- Li, Xianghua -- Zhang, Qifa -- New York, N.Y. -- Science. 2012 Sep 14;337(6100):1336-40. doi: 10.1126/science.1223702.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22984070" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chimera/*genetics ; Endoplasmic Reticulum Stress/genetics ; Germ Cells, Plant/metabolism ; Molecular Sequence Data ; Open Reading Frames/genetics ; Oryza/cytology/*genetics ; Plant Infertility/*genetics
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  • 9
    Publication Date: 2013-12-21
    Description: Most fungi and bacteria degrade plant cell walls by secreting free, complementary enzymes that hydrolyze cellulose; however, some bacteria use large enzymatic assemblies called cellulosomes, which recruit complementary enzymes to protein scaffolds. The thermophilic bacterium Caldicellulosiruptor bescii uses an intermediate strategy, secreting many free cellulases that contain multiple catalytic domains. One of these, CelA, comprises a glycoside hydrolase family 9 and a family 48 catalytic domain, as well as three type III cellulose-binding modules. In the saccharification of a common cellulose standard, Avicel, CelA outperforms mixtures of commercially relevant exo- and endoglucanases. From transmission electron microscopy studies of cellulose after incubation with CelA, we report morphological features that suggest that CelA not only exploits the common surface ablation mechanism driven by general cellulase processivity, but also excavates extensive cavities into the surface of the substrate. These results suggest that nature's repertoire of cellulose digestion paradigms remain only partially discovered and understood.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunecky, Roman -- Alahuhta, Markus -- Xu, Qi -- Donohoe, Bryon S -- Crowley, Michael F -- Kataeva, Irina A -- Yang, Sung-Jae -- Resch, Michael G -- Adams, Michael W W -- Lunin, Vladimir V -- Himmel, Michael E -- Bomble, Yannick J -- New York, N.Y. -- Science. 2013 Dec 20;342(6165):1513-6. doi: 10.1126/science.1244273.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biosciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24357319" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*enzymology ; Bacterial Proteins/*chemistry/isolation & purification ; Catalysis ; Catalytic Domain ; Cellulase/*chemistry/isolation & purification ; Cellulose/*chemistry ; Hot Temperature ; Hydrolysis ; Substrate Specificity
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  • 10
    Publication Date: 2014-08-12
    Description: Computation of lattice energies to an accuracy sufficient to distinguish polymorphs is a fundamental bottleneck in crystal structure prediction. For the lattice energy of the prototypical benzene crystal, we combined the quantum chemical advances of the last decade to attain sub-kilojoule per mole accuracy, an order-of-magnitude improvement in certainty over prior calculations that necessitates revision of the experimental extrapolation to 0 kelvin. Our computations reveal the nature of binding by improving on previously inaccessible or inaccurate multibody and many-electron contributions and provide revised estimates of the effects of temperature, vibrations, and relaxation. Our demonstration raises prospects for definitive first-principles resolution of competing polymorphs in molecular crystal structure prediction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Jun -- Hu, Weifeng -- Usvyat, Denis -- Matthews, Devin -- Schutz, Martin -- Chan, Garnet Kin-Lic -- New York, N.Y. -- Science. 2014 Aug 8;345(6197):640-3. doi: 10.1126/science.1254419. Epub 2014 Aug 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. ; Institut fur Physikalische und Theoretische Chemie, Universitat Regensburg, Regensburg D-93040, Germany. ; Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 078712, USA. ; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. gkchan@princeton.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25104379" target="_blank"〉PubMed〈/a〉
    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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