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  • American Association for the Advancement of Science (AAAS)  (153)
  • 2005-2009  (58)
  • 1995-1999  (55)
  • 1990-1994  (40)
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  • 1
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    Functional characterization of the S. cerevisiae genome by gene deletion and parallel analysis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-08-07
    Beschreibung: The functions of many open reading frames (ORFs) identified in genome-sequencing projects are unknown. New, whole-genome approaches are required to systematically determine their function. A total of 6925 Saccharomyces cerevisiae strains were constructed, by a high-throughput strategy, each with a precise deletion of one of 2026 ORFs (more than one-third of the ORFs in the genome). Of the deleted ORFs, 17 percent were essential for viability in rich medium. The phenotypes of more than 500 deletion strains were assayed in parallel. Of the deletion strains, 40 percent showed quantitative growth defects in either rich or minimal medium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winzeler, E A -- Shoemaker, D D -- Astromoff, A -- Liang, H -- Anderson, K -- Andre, B -- Bangham, R -- Benito, R -- Boeke, J D -- Bussey, H -- Chu, A M -- Connelly, C -- Davis, K -- Dietrich, F -- Dow, S W -- El Bakkoury, M -- Foury, F -- Friend, S H -- Gentalen, E -- Giaever, G -- Hegemann, J H -- Jones, T -- Laub, M -- Liao, H -- Liebundguth, N -- Lockhart, D J -- Lucau-Danila, A -- Lussier, M -- M'Rabet, N -- Menard, P -- Mittmann, M -- Pai, C -- Rebischung, C -- Revuelta, J L -- Riles, L -- Roberts, C J -- Ross-MacDonald, P -- Scherens, B -- Snyder, M -- Sookhai-Mahadeo, S -- Storms, R K -- Veronneau, S -- Voet, M -- Volckaert, G -- Ward, T R -- Wysocki, R -- Yen, G S -- Yu, K -- Zimmermann, K -- Philippsen, P -- Johnston, M -- Davis, R W -- HG00185-02/HG/NHGRI NIH HHS/ -- HG01627/HG/NHGRI NIH HHS/ -- HG01633/HG/NHGRI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Aug 6;285(5429):901-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10436161" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Culture Media ; *Gene Deletion ; Gene Expression Regulation, Fungal ; Gene Targeting ; *Genes, Essential ; Genes, Fungal ; *Genome, Fungal ; *Open Reading Frames ; Phenotype ; Polymerase Chain Reaction ; Recombination, Genetic ; Saccharomyces cerevisiae/*genetics/growth & development
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    A receptor/cytoskeletal movement triggered by costimulation during T cell activation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1998-12-18
    Beschreibung: During T cell activation, the engagement of costimulatory molecules is often crucial to the development of an effective immune response, but the mechanism by which this is achieved is not known. Here, it is shown that beads attached to the surface of a T cell translocate toward the interface shortly after the start of T cell activation. This movement appears to depend on myosin motor proteins and requires the engagement of the major costimulatory receptor pairs, B7-CD28 and ICAM-1-LFA-1. This suggests that the engagement of costimulatory receptors triggers an active accumulation of molecules at the interface of the T cell and the antigen-presenting cell, which then increases the overall amplitude and duration of T cell signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wulfing, C -- Davis, M M -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2266-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and 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/9856952" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigen Presentation ; Antigen-Presenting Cells/immunology ; Antigens, CD/*metabolism ; Antigens, CD28/metabolism ; Antigens, CD86 ; Biotinylation ; CHO Cells ; Calcium/metabolism ; Cricetinae ; Cytoskeleton/*physiology ; Intercellular Adhesion Molecule-1/metabolism ; *Lymphocyte Activation ; Lymphocyte Function-Associated Antigen-1/metabolism ; Membrane Glycoproteins/metabolism ; Mice ; Microspheres ; Molecular Motor Proteins/physiology ; Myosins/physiology ; Phosphatidylinositol 3-Kinases/metabolism ; Receptors, Antigen, T-Cell/immunology ; Signal Transduction ; T-Lymphocytes/*immunology/metabolism/ultrastructure ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Genome sequence of an obligate intracellular pathogen of humans: Chlamydia trachomatis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1998-10-23
    Beschreibung: Analysis of the 1,042,519-base pair Chlamydia trachomatis genome revealed unexpected features related to the complex biology of chlamydiae. Although chlamydiae lack many biosynthetic capabilities, they retain functions for performing key steps and interconversions of metabolites obtained from their mammalian host cells. Numerous potential virulence-associated proteins also were characterized. Several eukaryotic chromatin-associated domain proteins were identified, suggesting a eukaryotic-like mechanism for chlamydial nucleoid condensation and decondensation. The phylogenetic mosaic of chlamydial genes, including a large number of genes with phylogenetic origins from eukaryotes, implies a complex evolution for adaptation to obligate intracellular parasitism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stephens, R S -- Kalman, S -- Lammel, C -- Fan, J -- Marathe, R -- Aravind, L -- Mitchell, W -- Olinger, L -- Tatusov, R L -- Zhao, Q -- Koonin, E V -- Davis, R W -- AI 39258/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):754-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Infectious Diseases, University of California, Berkeley, CA 94720, USA. ctgenome@socrates.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784136" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aerobiosis ; Amino Acid Sequence ; Amino Acids/biosynthesis ; Bacterial Outer Membrane Proteins/genetics ; Bacterial Proteins/chemistry/genetics ; Biological Evolution ; Chlamydia trachomatis/classification/*genetics/metabolism/physiology ; DNA Repair ; Energy Metabolism ; Enzymes/chemistry/genetics ; *Genome, Bacterial ; Humans ; Lipids/biosynthesis ; Molecular Sequence Data ; Peptidoglycan/biosynthesis/genetics ; Phylogeny ; Protein Biosynthesis ; Recombination, Genetic ; *Sequence Analysis, DNA ; Transcription, Genetic ; Transformation, Bacterial ; Virulence
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Particle nucleation in the tropical boundary layer and its coupling to marine sulfur sources (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1998-10-02
    Beschreibung: New particle formation in a tropical marine boundary layer setting was characterized during NASA's Pacific Exploratory Mission-Tropics A program. It represents the clearest demonstration to date of aerosol nucleation and growth being linked to the natural marine sulfur cycle. This conclusion was based on real-time observations of dimethylsulfide, sulfur dioxide, sulfuric acid (gas), hydroxide, ozone, temperature, relative humidity, aerosol size and number distribution, and total aerosol surface area. Classic binary nucleation theory predicts no nucleation under the observed marine boundary layer conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clarke -- Davis -- Kapustin -- Eisele -- Chen -- Paluch I -- Lenschow -- Bandy -- Thornton -- Moore -- Mauldin -- Tanner -- Litchy -- Carroll -- Collins -- Albercook -- New York, N.Y. -- Science. 1998 Oct 2;282(5386):89-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉A. D. Clarke, V. N. Kapustin, K. Moore, M. Litchy, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI, USA. D. Davis, F. Eisele, G. Chen, School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atl.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9756483" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    Defective angiogenesis in mice lacking endoglin (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-29
    Beschreibung: Endoglin is a transforming growth factor-beta (TGF-beta) binding protein expressed on the surface of endothelial cells. Loss-of-function mutations in the human endoglin gene ENG cause hereditary hemorrhagic telangiectasia (HHT1), a disease characterized by vascular malformations. Here it is shown that by gestational day 11.5, mice lacking endoglin die from defective vascular development. However, in contrast to mice lacking TGF-beta, vasculogenesis was unaffected. Loss of endoglin caused poor vascular smooth muscle development and arrested endothelial remodeling. These results demonstrate that endoglin is essential for angiogenesis and suggest a pathogenic mechanism for HHT1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, D Y -- Sorensen, L K -- Brooke, B S -- Urness, L D -- Davis, E C -- Taylor, D G -- Boak, B B -- Wendel, D P -- K08 HL03490-03/HL/NHLBI NIH HHS/ -- T35 HL07744-06/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 May 28;284(5419):1534-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Human Molecular Biology and Genetics, Department of Human Genetics, Howard Hughes Medical Institute, University of Utah, Salt Lake City, UT 84112-5330, USA. dean.li@hci.utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10348742" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, CD ; Antigens, CD31/analysis ; Blood Vessels/cytology/*embryology/metabolism ; Cell Differentiation ; Crosses, Genetic ; Endothelium, Vascular/cytology/*embryology/metabolism ; Female ; Gene Targeting ; In Situ Hybridization ; Male ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron ; Muscle, Smooth, Vascular/cytology/*embryology ; *Neovascularization, Physiologic ; Receptors, Cell Surface ; Signal Transduction ; Transforming Growth Factor beta/metabolism ; Vascular Cell Adhesion Molecule-1/genetics/*physiology ; Yolk Sac/ultrastructure
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Giant wormlike rubber micelles (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-12
    Beschreibung: A low molecular weight poly(ethyleneoxide)-poly(butadiene) (PEO-PB) diblock copolymer containing 50 weight percent PEO forms gigantic wormlike micelles at low concentrations (〈5 percent by weight) in water. Subsequent generation of free radicals with a conventional water-based redox reaction leads to chemical cross-linking of the PB cores without disruption of the cylindrical morphology, as evidenced by cryotransmission electron microscopy and small-angle neutron scattering experiments. These wormlike rubber micelles exhibit unusual viscoelastic properties in water.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Won -- Davis -- Bates -- New York, N.Y. -- Science. 1999 Feb 12;283(5404):960-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9974383" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Breast implant safety (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-03
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, D L -- Garry, R F -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1644.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10189316" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Breast Implants/*adverse effects ; Female ; Humans ; Silicone Gels/*adverse effects
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Animal rights (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, L L -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):327-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9925487" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Animal Rights ; Animal Testing Alternatives ; *Animal Welfare ; Animals ; *Animals, Laboratory ; Public Opinion ; *Research
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    Hunting behavior of a marine mammal beneath the antarctic fast Ice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-12
    Beschreibung: The hunting behavior of a marine mammal was studied beneath the Antarctic fast ice with an animal-borne video system and data recorder. Weddell seals stalked large Antarctic cod and the smaller subice fish Pagothenia borchgrevinki, often with the under-ice surface for backlighting, which implies that vision is important for hunting. They approached to within centimeters of cod without startling the fish. Seals flushed P. borchgrevinki by blowing air into subice crevices or pursued them into the platelet ice. These observations highlight the broad range of insights that are possible with simultaneous recordings of video, audio, three-dimensional dive paths, and locomotor effort.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis -- Fuiman -- Williams -- Collier -- Hagey -- Kanatous -- Kohin -- Horning -- New York, N.Y. -- Science. 1999 Feb 12;283(5404):993-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Marine Biology, Texas A&M University, 5007 Avenue U, Galveston, TX 77553, USA. Department of Marine Science, University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX 78373, USA. Department of Biology, EMS-A316, Universi.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9974394" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    Dosage compensation proteins targeted to X chromosomes by a determinant of hermaphrodite fate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-12
    Beschreibung: In many organisms, master control genes coordinately regulate sex-specific aspects of development. SDC-2 was shown to induce hermaphrodite sexual differentiation and activate X chromosome dosage compensation in Caenorhabditis elegans. To control these distinct processes, SDC-2 acts as a strong gene-specific repressor and a weaker chromosome-wide repressor. To initiate hermaphrodite development, SDC-2 associates with the promoter of the male sex-determining gene her-1 to repress its transcription. To activate dosage compensation, SDC-2 triggers assembly of a specialized protein complex exclusively on hermaphrodite X chromosomes to reduce gene expression by half. SDC-2 can localize to X chromosomes without other components of the dosage compensation complex, suggesting that SDC-2 targets dosage compensation machinery to X chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawes, H E -- Berlin, D S -- Lapidus, D M -- Nusbaum, C -- Davis, T L -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1800-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364546" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Caenorhabditis elegans/embryology/*genetics/physiology ; *Caenorhabditis elegans Proteins ; *DNA-Binding Proteins ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Female ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Male ; Molecular Sequence Data ; Mutation ; Promoter Regions, Genetic ; Repressor Proteins/genetics/*physiology ; *Sex Determination Processes ; Transgenes ; X Chromosome/genetics/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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