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  • 1995-1999  (642)
  • 1990-1994  (525)
  • 1945-1949  (12)
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  • 1
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    Association of BRCA1 with the hRad50-hMre11-p95 complex and the DNA damage response (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: BRCA1 encodes a tumor suppressor that is mutated in familial breast and ovarian cancers. Here, it is shown that BRCA1 interacts in vitro and in vivo with hRad50, which forms a complex with hMre11 and p95/nibrin. Upon irradiation, BRCA1 was detected in discrete foci in the nucleus, which colocalize with hRad50. Formation of irradiation-induced foci positive for BRCA1, hRad50, hMre11, or p95 was dramatically reduced in HCC/1937 breast cancer cells carrying a homozygous mutation in BRCA1 but was restored by transfection of wild-type BRCA1. Ectopic expression of wild-type, but not mutated, BRCA1 in these cells rendered them less sensitive to the DNA damage agent, methyl methanesulfonate. These data suggest that BRCA1 is important for the cellular responses to DNA damage that are mediated by the hRad50-hMre11-p95 complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhong, Q -- Chen, C F -- Li, S -- Chen, Y -- Wang, C C -- Xiao, J -- Chen, P L -- Sharp, Z D -- Lee, W H -- CA 30195/CA/NCI NIH HHS/ -- CA 58183/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):747-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Medicine, Institute of Biotechnology, University of Texas Health Science Center at San Antonio, 15355 Lambda Drive, San Antonio, TX 78245, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426999" target="_blank"〉PubMed〈/a〉
    Keywords: BRCA1 Protein/*metabolism ; Cell Cycle Proteins/*metabolism ; Cell Nucleus/*metabolism ; Cell Survival ; *DNA Damage ; *DNA Repair Enzymes ; DNA-Binding Proteins/*metabolism ; Gamma Rays ; Genes, BRCA1 ; Humans ; Methyl Methanesulfonate/pharmacology ; Mutagens/pharmacology ; Mutation ; *Nuclear Proteins ; Rad51 Recombinase ; Recombination, Genetic ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , 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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    DNA topoisomerase IIbeta and neural development (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-30
    Description: DNA topoisomerase IIbeta is shown to have an unsuspected and critical role in neural development. Neurogenesis was normal in IIbeta mutant mice, but motor axons failed to contact skeletal muscles, and sensory axons failed to enter the spinal cord. Despite an absence of innervation, clusters of acetylcholine receptors were concentrated in the central region of skeletal muscles, thereby revealing patterning mechanisms that are autonomous to skeletal muscle. The defects in motor axon growth in IIbeta mutant mice resulted in a breathing impairment and death of the pups shortly after birth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, X -- Li, W -- Prescott, E D -- Burden, S J -- Wang, J C -- NS10537/NS/NINDS NIH HHS/ -- NS27963/NS/NINDS NIH HHS/ -- NS36193/NS/NINDS NIH HHS/ -- R01 NS036193/NS/NINDS NIH HHS/ -- R01 NS036193-02/NS/NINDS NIH HHS/ -- R01 NS041311/NS/NINDS NIH HHS/ -- R01 NS041311-03/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Jan 7;287(5450):131-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Skirball Institute of Molecular Medicine, New York University Medical School, 540 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10615047" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology/ultrastructure ; Cell Lineage ; Cues ; DNA Repair ; DNA Topoisomerases, Type II/genetics/*metabolism ; DNA-Binding Proteins ; Diaphragm/chemistry/embryology/innervation ; Embryonic and Fetal Development ; Gene Targeting ; Intercostal Muscles/innervation ; Mice ; Mice, Knockout ; Motor Neurons/physiology/ultrastructure ; Muscle, Skeletal/embryology/*innervation ; Neuromuscular Junction/*embryology/growth & development ; Neurons, Afferent/physiology/ultrastructure ; Presynaptic Terminals/ultrastructure ; Receptors, Cholinergic/analysis ; Skin/innervation ; Spinal Cord/embryology/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Template supercoiling by a chimera of yeast GAL4 protein and phage T7 RNA polymerase (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-14
    Description: Fusion of the DNA-binding domain of yeast GAL4 protein to the amino terminus of bacteriophage T7 RNA polymerase yields a chimera that retains the characteristics of its components. The presence of the GAL4 peptide allows the chimeric enzyme to anchor itself on the DNA template, and this anchoring in turn drives the formation of a supercoiled DNA loop, in linear or circular templates, when RNA synthesis at the polymerase site forces a translocation of the DNA relative to the site. Nonspecific interaction between the chimeric enzyme and DNA appears to be sufficient to effect supercoiling during transcription. Transcription by the chimeric polymerase is strictly dependent on the presence of a T7 promoter; thus it provides a tool in vitro and in vivo for specifically supercoiling DNA segments containing T7 promoter sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ostrander, E A -- Benedetti, P -- Wang, J C -- GM24544/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Sep 14;249(4974):1261-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2399463" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; DNA, Superhelical/*metabolism ; DNA-Binding Proteins/*physiology ; DNA-Directed RNA Polymerases/*physiology ; Fungal Proteins/*metabolism ; Macromolecular Substances ; Molecular Sequence Data ; Promoter Regions, Genetic/physiology ; Recombinant Fusion Proteins/metabolism ; *Saccharomyces cerevisiae Proteins ; T-Phages/*enzymology ; Transcription Factors/physiology ; Transcription, Genetic/*physiology ; Viral Proteins
    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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    Design, activity, and 2.8 A crystal structure of a C2 symmetric inhibitor complexed to HIV-1 protease (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-03
    Description: A two-fold (C2) symmetric inhibitor of the protease of human immunodeficiency virus type-1 (HIV-1) has been designed on the basis of the three-dimensional symmetry of the enzyme active site. The symmetric molecule inhibited both protease activity and acute HIV-1 infection in vitro, was at least 10,000-fold more potent against HIV-1 protease than against related enzymes, and appeared to be stable to degradative enzymes. The 2.8 angstrom crystal structure of the inhibitor-enzyme complex demonstrated that the inhibitor binds to the enzyme in a highly symmetric fashion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erickson, J -- Neidhart, D J -- VanDrie, J -- Kempf, D J -- Wang, X C -- Norbeck, D W -- Plattner, J J -- Rittenhouse, J W -- Turon, M -- Wideburg, N -- AI 27220/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1990 Aug 3;249(4968):527-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computer-Assisted Molecular Design, Abbott Laboratories, Abbott Park, IL 60064.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2200122" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Drug Design ; Endopeptidases/*metabolism ; Gene Products, pol/*metabolism ; HIV Protease ; HIV-1/*enzymology ; Kinetics ; Models, Molecular ; Molecular Sequence Data ; Protease Inhibitors/*pharmacology ; Protein Conformation ; Sugar Alcohols/*pharmacology ; Valine/*analogs & derivatives/pharmacology
    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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    Induction of apoptosis in uninfected lymphocytes by HIV-1 Tat protein (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-04-21
    Description: Infection by human immunodeficiency virus-type 1 (HIV-1) is typified by the progressive depletion of CD4 T lymphocytes and deterioration of immune function in most patients. A central unresolved issue in acquired immunodeficiency syndrome (AIDS) pathogenesis is the mechanism underlying this T cell depletion. HIV-1 Tat protein was shown to induce cell death by apoptosis in a T cell line and in cultured peripheral blood mononuclear cells from uninfected donors. This Tat-induced apoptosis was inhibitable by growth factors and was associated with enhanced activation of cyclin-dependent kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, C J -- Friedman, D J -- Wang, C -- Metelev, V -- Pardee, A B -- AI-35511/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):429-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cell Growth and Regulation, Dana-Farber Cancer Institute, Boston, MA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716549" target="_blank"〉PubMed〈/a〉
    Keywords: *Apoptosis ; Base Sequence ; *CDC2-CDC28 Kinases ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/metabolism ; Enzyme Activation ; Gene Products, tat/pharmacology/*physiology ; Genes, tat ; *Hiv-1 ; Humans ; Leukocytes, Mononuclear/*cytology/enzymology ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/metabolism ; Recombinant Proteins/pharmacology ; T-Lymphocytes/*cytology/enzymology ; Transfection ; Tumor Cells, Cultured ; tat Gene Products, Human Immunodeficiency Virus
    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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    Atomic-scale desorption through electronic and vibrational excitation mechanisms (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-16
    Description: The scanning tunneling microscope has been used to desorb hydrogen from hydrogen-terminated silicon (100) surfaces. As a result of control of the dose of incident electrons, a countable number of desorption sites can be created and the yield and cross section are thereby obtained. Two distinct desorption mechanisms are observed: (i) direct electronic excitation of the Si-H bond by field-emitted electrons and (ii) an atomic resolution mechanism that involves multiple-vibrational excitation by tunneling electrons at low applied voltages. This vibrational heating effect offers significant potential for controlling surface reactions involving adsorbed individual atoms and molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, T C -- Wang, C -- Abeln, G C -- Tucker, J R -- Lyding, J W -- Avouris, P -- Walkup, R E -- New York, N.Y. -- Science. 1995 Jun 16;268(5217):1590-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17754609" 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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  • 7
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    Knotting of a DNA chain during ring closure (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-04-23
    Description: The formation of knotted species on random ring closure of two DNAs that are 5.6 kilobase pairs (kbp) and 8.6 kbp in length was measured, and these data were used to calculate the effective DNA helix diameter as a function of sodium ion and magnesium ion concentration. In the presence of more than 50 mM magnesium ion, interactions between DNA segments appear to be attractive rather than repulsive. The free energy of formation of relaxed trefoil and figure-eight DNA knots and of supercoiled trefoil DNA knots was also evaluated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaw, S Y -- Wang, J C -- New York, N.Y. -- Science. 1993 Apr 23;260(5107):533-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard University, Department of Biochemistry and Molecular Biology, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8475384" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*chemistry/metabolism ; DNA, Circular/*chemistry/metabolism ; DNA, Single-Stranded/chemistry ; DNA, Superhelical/*chemistry/metabolism ; Magnesium/pharmacology ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Probability ; Sodium Chloride/pharmacology ; Thermodynamics
    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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    Uncertainties in carbon dioxide radiative forcing in atmospheric general circulation models (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-19
    Description: Global warming caused by an increase in the concentrations of greenhouse gases, is the direct result of greenhouse gas-induced radiative forcing. When a doubling of atmospheric carbon dioxide is considered, this forcing differed substantially among 15 atmospheric general circulation models. Although there are several potential causes, the largest contributor was the carbon dioxide radiation parameterizations of the models.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cess, R D -- Zhang, M H -- Potter, G L -- Barker, H W -- Colman, R A -- Dazlich, D A -- Del Genio, A D -- Esch, M -- Fraser, J R -- Galin, V -- Gates, W L -- Hack, J J -- Ingram, W J -- Kiehl, J T -- Lacis, A A -- Le Treut, H -- Li, Z X -- Liang, X Z -- Mahfouf, J F -- McAvaney, B J -- Meleshko, V P -- Morcrette, J J -- Randall, D A -- Roeckner, E -- Royer, J F -- Sokolov, A P -- Sporyshev, P V -- Taylor, K E -- Wang, W C -- Wetherald, R T -- New York, N.Y. -- Science. 1993 Nov 19;262(5137):1252-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17772648" 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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  • 9
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    Abstract: Steep and Gentle Slope Depositional Systems in Lacustrine Rift Basins - A Case study of the Huagou Sag in the Bohai Bay Basin: Facies Composition and Geological Controls  (1999)
    American Association of Petroleum Geologists
    Details
    Publication Date: 1999-01-01
    Print ISSN: 0149-1423
    Electronic ISSN: 1943-2674
    Topics: Geosciences
    Published by American Association of Petroleum Geologists
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  • 10
    Electronic Resource
    Electronic Resource
    Determination of the rate coefficient for the reaction hydrogen atom + oxygen .fwdarw. hydrogen + oxygen atom by a shock tube/laser absorption/detailed modeling study (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 1258-1265 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100156a041
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    Paper (German National Licenses)
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