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  • Artikel  (394)
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  • 1
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    Firefly gene lights up lab animals from inside out (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-06-27
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taubes, G -- New York, N.Y. -- Science. 1997 Jun 27;276(5321):1993.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9221506" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; DNA, Recombinant ; Diagnostic Imaging/*methods ; *Gene Expression Regulation ; Genetic Therapy ; HIV/physiology ; HIV Infections/virology ; Luciferases/*genetics ; Luminescence ; Mice ; Mice, Transgenic ; Salmonella Infections, Animal/drug therapy/microbiology ; Virus Replication
    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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    Initial genetic characterization of the 1918 "Spanish" influenza virus (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-03-21
    Beschreibung: The "Spanish" influenza pandemic killed at least 20 million people in 1918-1919, making it the worst infectious pandemic in history. Understanding the origins of the 1918 virus and the basis for its exceptional virulence may aid in the prediction of future influenza pandemics. RNA from a victim of the 1918 pandemic was isolated from a formalin-fixed, paraffin-embedded, lung tissue sample. Nine fragments of viral RNA were sequenced from the coding regions of hemagglutinin, neuraminidase, nucleoprotein, matrix protein 1, and matrix protein 2. The sequences are consistent with a novel H1N1 influenza A virus that belongs to the subgroup of strains that infect humans and swine, not the avian subgroup.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taubenberger, J K -- Reid, A H -- Krafft, A E -- Bijwaard, K E -- Fanning, T G -- New York, N.Y. -- Science. 1997 Mar 21;275(5307):1793-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Pathology, Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington DC 20306-6000, USA. taubenbe@email.afip.osd.mil〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9065404" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Algorithms ; Base Sequence ; *Genes, Viral ; Hemagglutinin Glycoproteins, Influenza Virus/genetics ; History, 20th Century ; Humans ; Influenza A virus/classification/*genetics/pathogenicity ; Influenza, Human/history/*virology ; Lung/virology ; Molecular Sequence Data ; Neuraminidase/genetics ; Nucleoproteins/genetics ; Phylogeny ; Polymerase Chain Reaction ; RNA, Viral/*genetics ; *RNA-Binding Proteins ; Viral Core Proteins/genetics ; Viral Matrix Proteins/genetics ; 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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  • 3
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    Discrete determinants in transfer RNA for editing and aminoacylation (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-05-23
    Beschreibung: During translation errors of aminoacylation are corrected in editing reactions which ensure that an amino acid is stably attached to its corresponding transfer RNA (tRNA). Previous studies have not shown whether the tRNA nucleotides needed for effecting translational editing are the same as or distinct from those required for aminoacylation, but several considerations have suggested that they are the same. Here, designed tRNAs that are highly active for aminoacylation but are not active in translational editing are presented. The editing reaction can be controlled by manipulation of nucleotides at the corner of the L-shaped tRNA. In contrast, these manipulations do not affect aminoacylation. These results demonstrate the segregation of nucleotide determinants for the editing and aminoacylation functions of tRNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hale, S P -- Auld, D S -- Schmidt, E -- Schimmel, P -- GM15539/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 May 23;276(5316):1250-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9157882" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylation ; Base Sequence ; Binding Sites ; Cloning, Molecular ; Escherichia coli ; Molecular Sequence Data ; Nucleic Acid Conformation ; *RNA Editing ; RNA, Transfer/*metabolism ; RNA, Transfer, Ile/chemistry/metabolism ; RNA, Transfer, Val/chemistry/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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  • 4
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    Requirement of the DEAD-Box protein ded1p for messenger RNA translation (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-03-07
    Beschreibung: The DED1 gene, which encodes a putative RNA helicase, has been implicated in nuclear pre-messenger RNA splicing in the yeast Saccharomyces cerevisiae. It is shown here by genetic and biochemical analysis that translation, rather than splicing, is severely impaired in two newly isolated ded1 conditional mutants. Preliminary evidence suggests that the protein Ded1p may be required for the initiation step of translation, as is the distinct DEAD-box protein, eukaryotic initiation factor 4A (eIF4A). The DED1 gene could be functionally replaced by a mouse homolog, PL10, which suggests that the function of Ded1p in translation is evolutionarily conserved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chuang, R Y -- Weaver, P L -- Liu, Z -- Chang, T H -- GM48752/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 7;275(5305):1468-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular, Cellular, and Developmental Biology Program, Ohio State University, Columbus, OH 43210, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9045610" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cytoplasm/metabolism ; DEAD-box RNA Helicases ; Eukaryotic Initiation Factor-4A ; Genes, Fungal ; Mice ; Mutation ; Peptide Initiation Factors/genetics/metabolism ; Phenotype ; *Protein Biosynthesis ; RNA Helicases ; RNA Nucleotidyltransferases/genetics/*metabolism ; RNA Splicing ; RNA, Fungal/*genetics ; RNA, Messenger/*genetics ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/enzymology/*genetics ; *Saccharomyces cerevisiae Proteins
    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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    Metal ion chaperone function of the soluble Cu(I) receptor Atx1 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-11-05
    Beschreibung: Reactive and potentially toxic cofactors such as copper ions are imported into eukaryotic cells and incorporated into target proteins by unknown mechanisms. Atx1, a prototypical copper chaperone protein from yeast, has now been shown to act as a soluble cytoplasmic copper(I) receptor that can adopt either a two- or three-coordinate metal center in the active site. Atx1 also associated directly with the Atx1-like cytosolic domains of Ccc2, a vesicular protein defined in genetic studies as a member of the copper-trafficking pathway. The unusual structure and dynamics of Atx1 suggest a copper exchange function for this protein and related domains in the Menkes and Wilson disease proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pufahl, R A -- Singer, C P -- Peariso, K L -- Lin, S J -- Schmidt, P J -- Fahrni, C J -- Culotta, V C -- Penner-Hahn, J E -- O'Halloran, T V -- GM-38047/GM/NIGMS NIH HHS/ -- GM-50016/GM/NIGMS NIH HHS/ -- GM-54111/GM/NIGMS NIH HHS/ -- R01 GM054111/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Oct 31;278(5339):853-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9346482" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; *Carrier Proteins ; *Cation Transport Proteins ; Copper/*metabolism ; Escherichia coli ; Fungal Proteins/metabolism/*physiology ; Humans ; Molecular Chaperones/*physiology ; Molecular Sequence Data ; Recombinant Proteins ; Saccharomyces cerevisiae/metabolism/*physiology ; *Saccharomyces cerevisiae Proteins ; Sequence Homology, Amino Acid
    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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    Mitochondrial and chloroplast phage-type RNA polymerases in Arabidopsis (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-08-08
    Beschreibung: In addition to the RNA polymerases (RNAPs) transcribing the nuclear genes, eukaryotic cells also require RNAPs to transcribe the genes of the mitochondrial genome and, in plants, of the chloroplast genome. The plant Arabidopsis thaliana was found to contain two nuclear genes similar to genes encoding the mitochondrial RNAP from yeast and RNAPs of bacteriophages T7, T3, and SP6. The putative transit peptides of the two polymerases were capable of targeting fusion proteins to mitochondria and chloroplasts, respectively, in vitro. The results indicate that the mitochondrial RNAP in plants is a bacteriophage-type enzyme. A gene duplication event may have generated the second RNAP, which along with the plastid-encoded eubacteria-like RNAP could transcribe the chloroplast genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedtke, B -- Borner, T -- Weihe, A -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):809-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Humboldt University Berlin, Institute of Biology, Chausseestrasse 117, D-10115 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242608" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Arabidopsis/*enzymology/genetics ; Cell Nucleus/genetics ; Chloroplasts/*enzymology ; Cloning, Molecular ; DNA-Directed RNA Polymerases/chemistry/*genetics ; Exons ; *Genes, Plant ; Introns ; Mitochondria/*enzymology ; Molecular Sequence Data ; Phylogeny ; Recombinant Fusion Proteins/metabolism ; Sequence Alignment ; T-Phages/enzymology
    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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  • 7
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    Angiopoietin-2, a natural antagonist for Tie2 that disrupts in vivo angiogenesis (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-07-04
    Beschreibung: Angiogenesis is thought to depend on a precise balance of positive and negative regulation. Angiopoietin-1 (Ang1) is an angiogenic factor that signals through the endothelial cell-specific Tie2 receptor tyrosine kinase. Like vascular endothelial growth factor, Ang1 is essential for normal vascular development in the mouse. An Ang1 relative, termed angiopoietin-2 (Ang2), was identified by homology screening and shown to be a naturally occurring antagonist for Ang1 and Tie2. Transgenic overexpression of Ang2 disrupts blood vessel formation in the mouse embryo. In adult mice and humans, Ang2 is expressed only at sites of vascular remodeling. Natural antagonists for vertebrate receptor tyrosine kinases are atypical; thus, the discovery of a negative regulator acting on Tie2 emphasizes the need for exquisite regulation of this angiogenic receptor system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maisonpierre, P C -- Suri, C -- Jones, P F -- Bartunkova, S -- Wiegand, S J -- Radziejewski, C -- Compton, D -- McClain, J -- Aldrich, T H -- Papadopoulos, N -- Daly, T J -- Davis, S -- Sato, T N -- Yancopoulos, G D -- New York, N.Y. -- Science. 1997 Jul 4;277(5322):55-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY 10591, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9204896" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Angiopoietin-1 ; Angiopoietin-2 ; Animals ; Blood Vessels/embryology/*metabolism ; Cells, Cultured ; Cloning, Molecular ; Embryo, Mammalian/metabolism ; Endothelial Growth Factors/genetics/metabolism ; Endothelium, Vascular/*cytology/metabolism ; Female ; Humans ; Ligands ; Lymphokines/genetics/metabolism ; Membrane Glycoproteins/antagonists & inhibitors/metabolism ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; *Neovascularization, Physiologic ; Phosphorylation ; Proteins/chemistry/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptor Protein-Tyrosine Kinases/*antagonists & inhibitors/metabolism ; Receptor, TIE-2 ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
    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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  • 8
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    AIDS research chief bows out (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-10-27
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1997 Oct 10;278(5336):218.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9340767" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Acquired Immunodeficiency Syndrome ; History, 20th Century ; National Institutes of Health (U.S.)/*organization & administration ; Research ; United States
    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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    Crystal structure of the nucleotide exchange factor GrpE bound to the ATPase domain of the molecular chaperone DnaK (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-04-18
    Beschreibung: The crystal structure of the adenine nucleotide exchange factor GrpE in complex with the adenosine triphosphatase (ATPase) domain of Escherichia coli DnaK [heat shock protein 70 (Hsp70)] was determined at 2.8 angstrom resolution. A dimer of GrpE binds asymmetrically to a single molecule of DnaK. The structure of the nucleotide-free ATPase domain in complex with GrpE resembles closely that of the nucleotide-bound mammalian Hsp70 homolog, except for an outward rotation of one of the subdomains of the protein. This conformational change is not consistent with tight nucleotide binding. Two long alpha helices extend away from the GrpE dimer and suggest a role for GrpE in peptide release from DnaK.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harrison, C J -- Hayer-Hartl, M -- Di Liberto, M -- Hartl, F -- Kuriyan, J -- New York, N.Y. -- Science. 1997 Apr 18;276(5311):431-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratories of Molecular Biophysics and Howard Hughes Medical Institute, Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9103205" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Diphosphate/metabolism ; Adenosine Triphosphatases/*chemistry/metabolism ; Amino Acid Sequence ; Bacterial Proteins/*chemistry/metabolism ; Binding Sites ; Crystallography, X-Ray ; Dimerization ; *Escherichia coli Proteins ; HSP70 Heat-Shock Proteins/*chemistry/metabolism ; Heat-Shock Proteins/*chemistry/metabolism ; Hydrogen Bonding ; Models, Molecular ; Molecular Chaperones/*chemistry/metabolism ; Molecular Sequence Data ; *Protein Conformation ; Protein Structure, Secondary
    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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    NCI reverses one expert panel, sides with another (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-04-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taubes, G -- New York, N.Y. -- Science. 1997 Apr 4;276(5309):27-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9122702" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Age Factors ; Breast Neoplasms/*prevention & control/radiography ; Consensus Development Conferences, NIH as Topic ; Female ; Humans ; *Mammography ; *Mass Screening ; Middle Aged ; *National Institutes of Health (U.S.) ; Randomized Controlled Trials as Topic ; Risk Factors ; United States
    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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