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  • Mutation  (2,852)
  • Signal Transduction  (1,508)
  • *Biological Evolution  (1,390)
  • American Association for the Advancement of Science (AAAS)  (5,357)
  • American Institute of Physics (AIP)
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  • 1
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    [This Week in Science] How hypoxia controls the kinase Akt (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-09-03
    Description: Author: L. Bryan Ray
    Keywords: Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , 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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    Genomic instability in mice lacking histone H2AX (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-06
    Description: Higher order chromatin structure presents a barrier to the recognition and repair of DNA damage. Double-strand breaks (DSBs) induce histone H2AX phosphorylation, which is associated with the recruitment of repair factors to damaged DNA. To help clarify the physiological role of H2AX, we targeted H2AX in mice. Although H2AX is not essential for irradiation-induced cell-cycle checkpoints, H2AX-/- mice were radiation sensitive, growth retarded, and immune deficient, and mutant males were infertile. These pleiotropic phenotypes were associated with chromosomal instability, repair defects, and impaired recruitment of Nbs1, 53bp1, and Brca1, but not Rad51, to irradiation-induced foci. Thus, H2AX is critical for facilitating the assembly of specific DNA-repair complexes on damaged DNA.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721576/" 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/PMC4721576/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celeste, Arkady -- Petersen, Simone -- Romanienko, Peter J -- Fernandez-Capetillo, Oscar -- Chen, Hua Tang -- Sedelnikova, Olga A -- Reina-San-Martin, Bernardo -- Coppola, Vincenzo -- Meffre, Eric -- Difilippantonio, Michael J -- Redon, Christophe -- Pilch, Duane R -- Olaru, Alexandru -- Eckhaus, Michael -- Camerini-Otero, R Daniel -- Tessarollo, Lino -- Livak, Ferenc -- Manova, Katia -- Bonner, William M -- Nussenzweig, Michel C -- Nussenzweig, Andre -- Z99 CA999999/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2002 May 3;296(5569):922-7. Epub 2002 Apr 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11934988" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/immunology/physiology ; Base Sequence ; Cell Aging ; Cell Cycle ; Cells, Cultured ; *Chromosome Aberrations ; DNA Damage ; *DNA Repair ; Female ; Gene Targeting ; Histones/chemistry/*genetics/*physiology ; Immunoglobulin Class Switching ; Infertility, Male/genetics/physiopathology ; Lymphocyte Count ; Male ; Meiosis ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Mutation ; Phosphorylation ; *Recombination, Genetic ; Spermatocytes/physiology ; T-Lymphocytes/immunology/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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  • 3
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    Genomics. Gene duplication and evolution (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-08-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lynch, Michael -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):945-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Indiana University, Bloomington, IN 47405, USA. mlynch@bio.indiana.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12169715" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Caenorhabditis elegans/genetics ; Chromosomes/genetics ; Chromosomes, Human/genetics ; *Gene Duplication ; Gene Rearrangement ; Gene Silencing ; *Genes, Duplicate ; *Genome, Human ; Genomics ; Humans ; Mutation ; Selection, Genetic
    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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    Visualization and functional analysis of RNA-dependent RNA polymerase lattices (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-22
    Description: Positive-strand RNA viruses such as poliovirus replicate their genomes on intracellular membranes of their eukaryotic hosts. Electron microscopy has revealed that purified poliovirus RNA-dependent RNA polymerase forms planar and tubular oligomeric arrays. The structural integrity of these arrays correlates with cooperative RNA binding and RNA elongation and is sensitive to mutations that disrupt intermolecular contacts predicted by the polymerase structure. Membranous vesicles isolated from poliovirus-infected cells contain structures consistent with the presence of two-dimensional polymerase arrays on their surfaces during infection. Therefore, host cytoplasmic membranes may function as physical foundations for two-dimensional polymerase arrays, conferring the advantages of surface catalysis to viral RNA replication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lyle, John M -- Bullitt, Esther -- Bienz, Kurt -- Kirkegaard, Karla -- AI-42119/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2002 Jun 21;296(5576):2218-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12077417" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Catalysis ; Crystallography, X-Ray ; HeLa Cells ; Humans ; Hydrogen-Ion Concentration ; Inclusion Bodies, Viral/metabolism/ultrastructure ; Microscopy, Electron ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Nucleic Acid Conformation ; Poliovirus/*enzymology/physiology ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; RNA Replicase/*chemistry/isolation & purification/*metabolism/ultrastructure ; RNA, Viral/biosynthesis/*metabolism ; Viral Core Proteins/metabolism ; Virus Replication
    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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    Primate origins meeting. New fossils and a glimpse of evolution (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moffat, Anne Simon -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):613-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809953" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *Color Perception ; Feeding Behavior ; Female ; *Fossils ; Haplorhini ; Male ; Plant Leaves ; *Primates/anatomy & histology ; Skeleton
    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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  • 6
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    Enhanced and delayed stress-induced alcohol drinking in mice lacking functional CRH1 receptors (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-04
    Description: There is a relation between stress and alcohol drinking. We show that the corticotropin-releasing hormone (CRH) system that mediates endocrine and behavioral responses to stress plays a role in the control of long-term alcohol drinking. In mice lacking a functional CRH1 receptor, stress leads to enhanced and progressively increasing alcohol intake. The effect of repeated stress on alcohol drinking behavior appeared with a delay and persisted throughout life. It was associated with an up-regulation of the N-methyl-d-aspartate receptor subunit NR2B. Alterations in the CRH1 receptor gene and adaptional changes in NR2B subunits may constitute a genetic risk factor for stress-induced alcohol drinking and alcoholism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sillaber, Inge -- Rammes, Gerhard -- Zimmermann, Stephan -- Mahal, Beatrice -- Zieglgansberger, Walter -- Wurst, Wolfgang -- Holsboer, Florian -- Spanagel, Rainer -- New York, N.Y. -- Science. 2002 May 3;296(5569):931-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute of Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany. sillaber@mpipsykl.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11988580" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; *Alcohol Drinking ; Alcoholism/*etiology/genetics ; Animals ; Brain/metabolism ; Corticotropin-Releasing Hormone/physiology ; Ethanol/blood ; Female ; Hippocampus/physiology ; In Vitro Techniques ; Male ; Mice ; Mice, Knockout ; Models, Animal ; Mutation ; Receptors, AMPA/metabolism ; Receptors, Corticotropin-Releasing Hormone/*genetics/*physiology ; Receptors, Kainic Acid/metabolism ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Signal Transduction ; Stress, Physiological/physiopathology ; Stress, Psychological/*physiopathology ; Up-Regulation
    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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    Hybridization and the evolution of reef coral diversity (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-18
    Description: Hundreds of coral species coexist sympatrically on reefs, reproducing in mass-spawning events where hybridization appears common. In the Caribbean, DNA sequence data from all three sympatric Acropora corals show that mass spawning does not erode species barriers. Species A. cervicornis and A. palmata are distinct at two nuclear loci or share ancestral alleles. Morphotypes historically given the name Acropora prolifera are entirely F(1) hybrids of these two species, showing morphologies that depend on which species provides the egg for hybridization. Although selection limits the evolutionary potential of hybrids, F(1) individuals can reproduce asexually and form long-lived, potentially immortal hybrids with unique morphologies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vollmer, Steven V -- Palumbi, Stephen R -- New York, N.Y. -- Science. 2002 Jun 14;296(5575):2023-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA. svollmer@oeb.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12065836" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bayes Theorem ; *Biological Evolution ; Calmodulin/genetics ; Caribbean Region ; Cnidaria/anatomy & histology/*classification/*genetics/physiology ; Collagen/genetics ; DNA, Mitochondrial/genetics ; *Ecosystem ; Environment ; *Genetic Variation ; Haplotypes ; *Hybridization, Genetic ; Introns ; Likelihood Functions ; Polymorphism, Genetic ; Reproduction ; Reproduction, Asexual ; Sequence Analysis, DNA ; Species Specificity
    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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    Stem cells. Setting standards for human embryonic stem cells (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brivanlou, Ali H -- Gage, Fred H -- Jaenisch, Rudolf -- Jessell, Thomas -- Melton, Douglas -- Rossant, Janet -- New York, N.Y. -- Science. 2003 May 9;300(5621):913-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, New York, NY 10021, USA. brvnlou@rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12738841" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Specimen Banks ; Cell Culture Techniques/methods ; Cell Differentiation ; Cell Division ; *Cell Line ; Culture Media ; Culture Media, Conditioned ; Databases, Factual ; *Embryo Research ; Embryo, Mammalian/*cytology ; Humans ; Quality Control ; Registries ; Research/standards ; Signal Transduction ; Stem Cell Transplantation ; *Stem Cells/cytology/physiology ; Transfection
    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
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    Plant genetics. A hidden Arabidopsis emerges under stress (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, Eliot -- New York, N.Y. -- Science. 2002 May 17;296(5571):1218.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016281" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arabidopsis/anatomy & histology/*genetics/growth & development/*physiology ; Arabidopsis Proteins/genetics/*physiology ; Biological Evolution ; Drosophila/anatomy & histology/genetics/growth & development/physiology ; Drosophila Proteins/genetics/physiology ; Genes, Insect ; Genes, Plant ; HSP90 Heat-Shock Proteins/genetics/*physiology ; Mutation ; Plant Leaves/anatomy & histology
    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
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    A green algal apicoplast ancestor (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Funes, Soledad -- Davidson, Edgar -- Reyes-Prieto, Adrian -- Magallon, Susana -- Herion, Pascal -- King, Michael P -- Gonzalez-Halphen, Diego -- HL59646/HL/NHLBI NIH HHS/ -- TW01176/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 2002 Dec 13;298(5601):2155.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico (UNAM), 04510 D.F., Mexico.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12481129" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apicomplexa/enzymology/*genetics/ultrastructure ; *Biological Evolution ; Cell Nucleus/genetics ; Chlamydomonas reinhardtii/enzymology/genetics ; Chlorophyta/enzymology/*genetics ; Cloning, Molecular ; DNA, Mitochondrial/genetics ; Electron Transport Complex IV/chemistry/*genetics ; *Gene Transfer, Horizontal ; Genes ; Genes, Protozoan ; Molecular Sequence Data ; Phylogeny ; Plastids/*genetics ; Symbiosis ; Toxoplasma/enzymology/genetics
    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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