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  • Artikel  (379)
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  • 1
    Publikationsdatum: 2013-01-12
    Beschreibung: We document that China's One-Child Policy (OCP), one of the most radical approaches to limiting population growth, has produced significantly less trusting, less trustworthy, more risk-averse, less competitive, more pessimistic, and less conscientious individuals. Our data were collected from economics experiments conducted with 421 individuals born just before and just after the OCP's introduction in 1979. Surveys to elicit personality traits were also used. We used the exogenous imposition of the OCP to identify the causal impact of being an only child, net of family background effects. The OCP thus has significant ramifications for Chinese society.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cameron, L -- Erkal, N -- Gangadharan, L -- Meng, X -- New York, N.Y. -- Science. 2013 Feb 22;339(6122):953-7. doi: 10.1126/science.1230221. Epub 2013 Jan 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Econometrics, Monash University, Clayton, Victoria 3800, Australia. lisa.cameron@monash.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23306438" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Altruism ; Anxiety Disorders ; *Attitude ; *Behavior ; China ; Competitive Behavior ; Family ; *Family Planning Policy ; Female ; Games, Experimental ; Humans ; Male ; Only Child/*psychology ; *Personality ; Risk-Taking ; Trust ; Urban Population
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2013-04-06
    Beschreibung: The 21st amino acid, selenocysteine (Sec), is synthesized on its cognate transfer RNA (tRNA(Sec)). In bacteria, SelA synthesizes Sec from Ser-tRNA(Sec), whereas in archaea and eukaryotes SepSecS forms Sec from phosphoserine (Sep) acylated to tRNA(Sec). We determined the crystal structures of Aquifex aeolicus SelA complexes, which revealed a ring-shaped homodecamer that binds 10 tRNA(Sec) molecules, each interacting with four SelA subunits. The SelA N-terminal domain binds the tRNA(Sec)-specific D-arm structure, thereby discriminating Ser-tRNA(Sec) from Ser-tRNA(Ser). A large cleft is created between two subunits and accommodates the 3'-terminal region of Ser-tRNA(Sec). The SelA structures together with in vivo and in vitro enzyme assays show decamerization to be essential for SelA function. SelA catalyzes pyridoxal 5'-phosphate-dependent Sec formation involving Arg residues nonhomologous to those in SepSecS. Different protein architecture and substrate coordination of the bacterial enzyme provide structural evidence for independent evolution of the two Sec synthesis systems present in nature.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3976565/" 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/PMC3976565/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Itoh, Yuzuru -- Brocker, Markus J -- Sekine, Shun-ichi -- Hammond, Gifty -- Suetsugu, Shiro -- Soll, Dieter -- Yokoyama, Shigeyuki -- GM22854/GM/NIGMS NIH HHS/ -- R01 GM022854/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2013 Apr 5;340(6128):75-8. doi: 10.1126/science.1229521.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RIKEN Systems and Structural Biology Center, Tsurumi, Yokohama 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23559248" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Arginine/chemistry ; Bacteria/*enzymology ; Bacterial Proteins/*chemistry ; Catalysis ; Catalytic Domain ; Crystallography, X-Ray ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Pyridoxal Phosphate/chemistry ; RNA, Transfer, Amino Acyl/*chemistry ; Selenocysteine/*biosynthesis ; Transferases/*chemistry
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2013-07-28
    Beschreibung: The essential bacterial protein FtsZ is a guanosine triphosphatase that self-assembles into a structure at the division site termed the "Z ring". During cytokinesis, the Z ring exerts a constrictive force on the membrane by using the chemical energy of guanosine triphosphate hydrolysis. However, the structural basis of this constriction remains unresolved. Here, we present the crystal structure of a guanosine diphosphate-bound Mycobacterium tuberculosis FtsZ protofilament, which exhibits a curved conformational state. The structure reveals a longitudinal interface that is important for function. The protofilament curvature highlights a hydrolysis-dependent conformational switch at the T3 loop that leads to longitudinal bending between subunits, which could generate sufficient force to drive cytokinesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3816583/" 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/PMC3816583/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Ying -- Hsin, Jen -- Zhao, Lingyun -- Cheng, Yiwen -- Shang, Weina -- Huang, Kerwyn Casey -- Wang, Hong-Wei -- Ye, Sheng -- 1F32GM100677-01A1/GM/NIGMS NIH HHS/ -- DP2 OD006466/OD/NIH HHS/ -- DP2OD006466/OD/NIH HHS/ -- F32 GM100677/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2013 Jul 26;341(6144):392-5. doi: 10.1126/science.1239248.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Life Sciences Institute, Zhejiang University, Hangzhou, 310058 Zhejiang, P.R. China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23888039" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Bacterial Proteins/*chemistry/genetics/*metabolism ; Cell Membrane/physiology ; Crystallography, X-Ray ; *Cytokinesis ; Cytoskeletal Proteins/*chemistry/genetics/*metabolism ; Escherichia coli/chemistry ; Guanosine Diphosphate/chemistry/metabolism ; Guanosine Triphosphate/metabolism ; Hydrolysis ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Molecular Dynamics Simulation ; Molecular Sequence Data ; Mycobacterium tuberculosis/*chemistry/physiology ; Point Mutation ; Protein Conformation ; Protein Multimerization ; Protein Subunits/chemistry/metabolism ; Staphylococcus aureus/chemistry
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2013-03-30
    Beschreibung: Based on nuclear and mitochondrial DNA, Hailer et al. (Reports, 20 April 2012, p. 344) suggested early divergence of polar bears from a common ancestor with brown bears and subsequent introgression. Our population genetic analysis that traces each of the genealogies in the independent nuclear loci does not support the evolutionary model proposed by the authors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakagome, Shigeki -- Mano, Shuhei -- Hasegawa, Masami -- New York, N.Y. -- Science. 2013 Mar 29;339(6127):1522. doi: 10.1126/science.1227339.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Statistical Mathematics, Tachikawa, Tokyo, Japan. nakagome@ism.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23539580" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; *Genome ; *Multilocus Sequence Typing ; Ursidae/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2013-12-18
    Beschreibung: An understanding of ctenophore biology is critical for reconstructing events that occurred early in animal evolution. Toward this goal, we have sequenced, assembled, and annotated the genome of the ctenophore Mnemiopsis leidyi. Our phylogenomic analyses of both amino acid positions and gene content suggest that ctenophores rather than sponges are the sister lineage to all other animals. Mnemiopsis lacks many of the genes found in bilaterian mesodermal cell types, suggesting that these cell types evolved independently. The set of neural genes in Mnemiopsis is similar to that of sponges, indicating that sponges may have lost a nervous system. These results present a newly supported view of early animal evolution that accounts for major losses and/or gains of sophisticated cell types, including nerve and muscle cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3920664/" 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/PMC3920664/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryan, Joseph F -- Pang, Kevin -- Schnitzler, Christine E -- Nguyen, Anh-Dao -- Moreland, R Travis -- Simmons, David K -- Koch, Bernard J -- Francis, Warren R -- Havlak, Paul -- NISC Comparative Sequencing Program -- Smith, Stephen A -- Putnam, Nicholas H -- Haddock, Steven H D -- Dunn, Casey W -- Wolfsberg, Tyra G -- Mullikin, James C -- Martindale, Mark Q -- Baxevanis, Andreas D -- ZIA HG000140-13/Intramural NIH HHS/ -- ZIA HG000140-14/Intramural NIH HHS/ -- ZIA HG000140-15/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2013 Dec 13;342(6164):1242592. doi: 10.1126/science.1242592.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genome Technology Branch, Division of Intramural Research, National Human Genome Research Institute, 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/24337300" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; *Biological Evolution ; Cell Lineage/*genetics ; Ctenophora/classification/*cytology/*genetics ; *Genome ; Mesoderm/cytology ; Molecular Sequence Data ; Muscle Development/genetics ; Neurogenesis/genetics ; Phylogeny
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2013-03-16
    Beschreibung: The identification of precise mutations is required for a complete understanding of the underlying molecular and evolutionary mechanisms driving adaptive phenotypic change. Using plasticine models in the field, we show that the light coat color of deer mice that recently colonized the light-colored soil of the Nebraska Sand Hills provides a strong selective advantage against visually hunting predators. Color variation in an admixed population suggests that this light Sand Hills phenotype is composed of multiple traits. We identified distinct regions within the Agouti locus associated with each color trait and found that only haplotypes associated with light trait values have evidence of selection. Thus, local adaptation is the result of independent selection on many mutations within a single locus, each with a specific effect on an adaptive phenotype, thereby minimizing pleiotropic consequences.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3836219/" 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/PMC3836219/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Linnen, Catherine R -- Poh, Yu-Ping -- Peterson, Brant K -- Barrett, Rowan D H -- Larson, Joanna G -- Jensen, Jeffrey D -- Hoekstra, Hopi E -- 308796/European Research Council/International -- New York, N.Y. -- Science. 2013 Mar 15;339(6125):1312-6. doi: 10.1126/science.1233213.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Kentucky, Lexington, KY 40506, USA. catherine.linnen@uky.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23493712" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptation, Physiological/*genetics ; Agouti Signaling Protein/genetics ; Animals ; *Biological Evolution ; Color ; Food Chain ; *Multifactorial Inheritance ; Mutation ; Organic Chemicals ; Peromyscus/genetics/*physiology ; Pigmentation/*genetics ; Selection, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 7
    Publikationsdatum: 2013-07-06
    Beschreibung: DNA methylation is implicated in mammalian brain development and plasticity underlying learning and memory. We report the genome-wide composition, patterning, cell specificity, and dynamics of DNA methylation at single-base resolution in human and mouse frontal cortex throughout their lifespan. Widespread methylome reconfiguration occurs during fetal to young adult development, coincident with synaptogenesis. During this period, highly conserved non-CG methylation (mCH) accumulates in neurons, but not glia, to become the dominant form of methylation in the human neuronal genome. Moreover, we found an mCH signature that identifies genes escaping X-chromosome inactivation. Last, whole-genome single-base resolution 5-hydroxymethylcytosine (hmC) maps revealed that hmC marks fetal brain cell genomes at putative regulatory regions that are CG-demethylated and activated in the adult brain and that CG demethylation at these hmC-poised loci depends on Tet2 activity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785061/" 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/PMC3785061/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lister, Ryan -- Mukamel, Eran A -- Nery, Joseph R -- Urich, Mark -- Puddifoot, Clare A -- Johnson, Nicholas D -- Lucero, Jacinta -- Huang, Yun -- Dwork, Andrew J -- Schultz, Matthew D -- Yu, Miao -- Tonti-Filippini, Julian -- Heyn, Holger -- Hu, Shijun -- Wu, Joseph C -- Rao, Anjana -- Esteller, Manel -- He, Chuan -- Haghighi, Fatemeh G -- Sejnowski, Terrence J -- Behrens, M Margarita -- Ecker, Joseph R -- AI44432/AI/NIAID NIH HHS/ -- CA151535/CA/NCI NIH HHS/ -- HD065812/HD/NICHD NIH HHS/ -- HG006827/HG/NHGRI NIH HHS/ -- K99NS080911/NS/NINDS NIH HHS/ -- MH094670/MH/NIMH NIH HHS/ -- R01 AI044432/AI/NIAID NIH HHS/ -- R01 CA151535/CA/NCI NIH HHS/ -- R01 HD065812/HD/NICHD NIH HHS/ -- R01 HG006827/HG/NHGRI NIH HHS/ -- R01 MH094670/MH/NIMH NIH HHS/ -- R01 MH094774/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Aug 9;341(6146):1237905. doi: 10.1126/science.1237905. Epub 2013 Jul 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA. ryan.lister@uwa.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23828890" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 5-Methylcytosine/metabolism ; Adult ; Animals ; Base Sequence ; Conserved Sequence ; Cytosine/*analogs & derivatives/metabolism ; *DNA Methylation ; *Epigenesis, Genetic ; Epigenomics ; Frontal Lobe/*growth & development ; *Gene Expression Regulation, Developmental ; Genome-Wide Association Study ; Humans ; Longevity ; Mice ; Mice, Inbred C57BL ; X Chromosome Inactivation/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2013-12-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, Ann -- New York, N.Y. -- Science. 2013 Dec 6;342(6163):1156. doi: 10.1126/science.342.6163.1156.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24311652" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; Bone and Bones ; *DNA, Mitochondrial ; *Fossils ; *Hominidae ; Humans ; Neanderthals ; Spain
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2013-10-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, Ann -- New York, N.Y. -- Science. 2013 Oct 18;342(6156):297-8. doi: 10.1126/science.342.6156.297.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24136941" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Anthropology ; *Biological Evolution ; *Fossils ; Georgia (Republic) ; History, Ancient ; Humans ; Skull/*anatomy & histology/*growth & development
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2013-04-27
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, Ann -- New York, N.Y. -- Science. 2013 Apr 26;340(6131):427. doi: 10.1126/science.340.6131.427.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23620032" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anthropology, Physical/*history ; *Biological Evolution ; Female ; Foot/*anatomy & histology/*physiology ; History, Ancient ; Hominidae/*anatomy & histology/*physiology ; Walking/*history
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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