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  • Analytical Chemistry and Spectroscopy  (7,072)
  • Animals
  • SPACE SCIENCES
  • 1990-1994  (9,341)
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Keywords
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Years
Year
  • 11
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    Italy keeps EMBL anxiously waiting (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biggin, S -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1798.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997871" target="_blank"〉PubMed〈/a〉
    Keywords: *Academies and Institutes/organization & administration ; Animals ; Biotechnology ; Italy ; Mice ; *Molecular Biology
    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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  • 12
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    An alternative to SH2 domains for binding tyrosine-phosphorylated proteins (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: Src homology 2 (SH2) domains bind specifically to tyrosine-phosphorylated proteins that participate in signaling by growth factors and oncogenes. A protein domain was identified that bound specifically to the tyrosine-phosphorylated form of its target protein but differs from known SH2 sequences. Phosphotyrosine-binding (PTB) domains were found in two proteins: SHC, a protein implicated in signaling through Ras; and SCK, encoded by a previously uncharacterized gene. The PTB domain of SHC specifically bound to a tyrosine-phosphorylated 145-kilodalton protein. PTB domains are an alternative to SH2 domains for specifically recruiting tyrosine-phosphorylated proteins into signaling complexes and are likely to take part in signaling by many growth factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kavanaugh, W M -- Williams, L T -- K11 HL02714/HL/NHLBI NIH HHS/ -- R01 HL32898/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1862-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7527937" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; *Adaptor Proteins, Signal Transducing ; *Adaptor Proteins, Vesicular Transport ; Amino Acid Sequence ; Animals ; Cell Line ; Humans ; Mice ; Molecular Sequence Data ; Phosphoproteins/*metabolism ; Phosphorylation ; Phosphotyrosine ; Platelet-Derived Growth Factor/pharmacology ; Protein Binding ; Protein-Tyrosine Kinases/chemistry/metabolism ; Proteins/chemistry/*metabolism ; Shc Signaling Adaptor Proteins ; *Signal Transduction ; Tyrosine/*analogs & derivatives/metabolism
    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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  • 13
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    Cell cycle control and cancer (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: Multiple genetic changes occur during the evolution of normal cells into cancer cells. This evolution is facilitated in cancer cells by loss of fidelity in the processes that replicate, repair, and segregate the genome. Recent advances in our understanding of the cell cycle reveal how fidelity is normally achieved by the coordinated activity of cyclin-dependent kinases, checkpoint controls, and repair pathways and how this fidelity can be abrogated by specific genetic changes. These insights suggest molecular mechanisms for cellular transformation and may help to identify potential targets for improved cancer therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hartwell, L H -- Kastan, M B -- CA 61949/CA/NCI NIH HHS/ -- ES 05777/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1821-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Aging ; *Cell Cycle ; *Cell Transformation, Neoplastic/genetics ; Cyclins/genetics/metabolism ; DNA Damage ; Humans ; Neoplasms/*etiology/pathology/prevention & control/therapy ; Signal Transduction ; Tumor Suppressor Protein p53/genetics/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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  • 14
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    Subsets of HLA-DR1 molecules defined by SEB and TSST-1 binding (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: Superantigens bind to major histocompatibility complex class II molecules on antigen-presenting cells and stimulate T cells. Staphylococcus aureus enterotoxin B (SEB) and toxic shock syndrome toxin-1 (TSST-1) bind to the same region of human lymphocyte antigen (HLA)-DR1 but do not compete with each other, which indicates that they bind to different subsets of DR1 molecules. Here, a mutation in the peptide-binding groove disrupted the SEB and TSST-1 binding sites, which suggests that peptides can influence the interaction with bacterial toxins. In support of this, the expression of the DR1 molecule in various cell types differentially affected the binding of these toxins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thibodeau, J -- Cloutier, I -- Lavoie, P M -- Labrecque, N -- Mourad, W -- Jardetzky, T -- Sekaly, R P -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1874-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire d'Immunologie, Institut de Recherches Cliniques de Montreal, Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997881" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; *Bacterial Toxins ; Binding Sites ; Binding, Competitive ; Cell Line ; Enterotoxins/chemistry/*metabolism ; HLA-DR1 Antigen/chemistry/genetics/*metabolism ; HeLa Cells ; Humans ; Hybridomas ; Mice ; Mutation ; Protein Structure, Secondary ; *Staphylococcus aureus ; Superantigens/chemistry/*metabolism ; T-Lymphocytes/*immunology
    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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  • 15
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    Freedom of information. Washington law forces grant disclosure (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slind-Flor, V -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1635.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992041" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Welfare ; Animals ; *Civil Rights ; Financing, Government/*legislation & jurisprudence ; Research/*legislation & jurisprudence ; Research Support as Topic/*legislation & jurisprudence ; Truth Disclosure ; Washington
    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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  • 16
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    Phylogeny of the attine ant fungi based on analysis of small subunit ribosomal RNA gene sequences (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: Complete 16S-like ribosomal RNA coding regions were obtained from the fungal symbiont of five genera of attine (leaf-cutting) ants and two free-living fungi. Phylogenetic analyses with distance matrix, maximum likelihood, and parsimony methods revealed that the attine fungal symbionts are homobasidiomycetes in the order Agaricales. Comparison of the topology of the attine fungal symbiont phylogenetic tree with a tree based on attine ant morphology revealed a congruent branching pattern of the more derived attine ants and their fungal symbionts. The parallel branching pattern suggests a long-term coevolution of derived leaf-cutting attine ants and their fungal symbionts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hinkle, G -- Wetterer, J K -- Schultz, T R -- Sogin, M L -- GM32964/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1695-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Biological laboratory, Woods Hole, MA 02543.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992052" target="_blank"〉PubMed〈/a〉
    Keywords: Agaricales/*classification/genetics/physiology ; Agaricus/classification/genetics ; Animals ; Ants/classification/*microbiology/physiology ; Biological Evolution ; *Genes, Fungal ; Molecular Sequence Data ; *Phylogeny ; RNA, Fungal/*genetics ; RNA, Ribosomal/*genetics ; RNA, Ribosomal, 16S/genetics ; Symbiosis
    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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  • 17
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    Correction of lethal intestinal defect in a mouse model of cystic fibrosis by human CFTR (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: Cystic fibrosis (CF) is caused by mutations in the gene encoding the cystic fibrosis transmembrane conductance regulator (CFTR). A potential animal model of CF, the CFTR-/- mouse, has had limited utility because most mice die from intestinal obstruction during the first month of life. Human CFTR (hCFTR) was expressed in CFTR-/- mice under the control of the rat intestinal fatty acid-binding protein gene promoter. The mice survived and showed functional correction of ileal goblet cell and crypt cell hyperplasia and cyclic adenosine monophosphate-stimulated chloride secretion. These results support the concept that transfer of the hCFTR gene may be a useful strategy for correcting physiologic defects in patients with CF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, L -- Dey, C R -- Wert, S E -- DuVall, M D -- Frizzell, R A -- Whitsett, J A -- DK38518/DK/NIDDK NIH HHS/ -- HL49004/HL/NHLBI NIH HHS/ -- HL51832/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1705-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Children's Hospital Medical Center, Division of Pulmonary Biology, Cincinnati, OH 45229-3039.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7527588" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Carrier Proteins/genetics ; Chlorides/metabolism ; Colforsin/pharmacology ; Colon/chemistry/pathology ; Cystic Fibrosis/genetics/metabolism/pathology/*therapy ; Cystic Fibrosis Transmembrane Conductance Regulator ; Disease Models, Animal ; Fatty Acid-Binding Proteins ; Gene Expression ; *Genetic Therapy ; Humans ; Intestinal Mucosa/chemistry/*pathology/secretion ; Intestine, Small/chemistry/pathology ; Membrane Proteins/analysis/*genetics/physiology ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; *Neoplasm Proteins ; *Nerve Tissue Proteins ; Promoter Regions, Genetic ; RNA, Messenger/analysis/genetics ; Rats ; Recombinant Proteins/biosynthesis ; *Tumor Suppressor Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 18
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    Control of kinetic properties of AMPA receptor channels by nuclear RNA editing (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor channels mediate the fast component of excitatory postsynaptic currents in the central nervous system. Site-selective nuclear RNA editing controls the calcium permeability of these channels, and RNA editing at a second site is shown here to affect the kinetic aspects of these channels in rat brain. In three of the four AMPA receptor subunits (GluR-B, -C, and -D), intronic elements determine a codon switch (AGA, arginine, to GGA, glycine) in the primary transcripts in a position termed the R/G site, which immediately precedes the alternatively spliced modules "flip" and "flop." The extent of editing at this site progresses with brain development in a manner specific for subunit and splice form, and edited channels possess faster recovery rates from desensitization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lomeli, H -- Mosbacher, J -- Melcher, T -- Hoger, T -- Geiger, J R -- Kuner, T -- Monyer, H -- Higuchi, M -- Bach, A -- Seeburg, P H -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1709-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neuroendocrinology, University of Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992055" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; Base Sequence ; Brain/embryology/*metabolism ; Cell Nucleus/metabolism ; Exons ; Glutamic Acid/pharmacology ; Glycine/genetics ; Introns ; Kinetics ; Membrane Potentials ; Molecular Sequence Data ; Oocytes ; PC12 Cells ; Patch-Clamp Techniques ; *RNA Editing ; Rats ; Rats, Wistar ; Receptors, AMPA/*genetics/*metabolism ; Recombinant Proteins/metabolism ; Xenopus
    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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  • 19
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    Resetting the biological clock: mediation of nocturnal circadian shifts by glutamate and NO (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: Circadian rhythms of mammals are timed by an endogenous clock with a period of about 24 hours located in the suprachiasmatic nucleus (SCN) of the hypothalamus. Light synchronizes this clock to the external environment by daily adjustments in the phase of the circadian oscillation. The mechanism has been thought to involve the release of excitatory amino acids from retinal afferents to the SCN. Brief treatment of rat SCN in vitro with glutamate (Glu), N-methyl-D-aspartate (NMDA), or nitric oxide (NO) generators produced lightlike phase shifts of circadian rhythms. The SCN exhibited calcium-dependent nitric oxide synthase (NOS) activity. Antagonists of NMDA or NOS pathways blocked Glu effects in vitro, and intracerebroventricular injection of a NOS inhibitor in vivo blocked the light-induced resetting of behavioral rhythms. Together, these data indicate that Glu release, NMDA receptor activation, NOS stimulation, and NO production link light activation of the retina to cellular changes within the SCN mediating the phase resetting of the biological clock.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ding, J M -- Chen, D -- Weber, E T -- Faiman, L E -- Rea, M A -- Gillette, M U -- NS22155/NS/NINDS NIH HHS/ -- R01 NS022155/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1713-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Structural Biology, University of Illinois, Urbana 61801.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7527589" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Oxidoreductases/metabolism ; Animals ; Arginine/analogs & derivatives/pharmacology ; Biological Clocks/drug effects/*physiology ; Circadian Rhythm/drug effects/*physiology ; Glutamic Acid/*metabolism/pharmacology ; In Vitro Techniques ; Light ; N-Methylaspartate/pharmacology ; NG-Nitroarginine Methyl Ester ; Neurons, Afferent/physiology ; Nitric Oxide/*metabolism ; Nitric Oxide Synthase ; Rats ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Retina/physiology ; Signal Transduction ; Suprachiasmatic Nucleus/drug effects/metabolism/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 20
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    Naturally occurring variation in bristle number and DNA polymorphisms at the scabrous locus of Drosophila melanogaster (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: The association between quantitative genetic variation in bristle number and molecular variation at a candidate neurogenic locus, scabrous, was examined in Drosophila melanogaster. Approximately 32 percent of the genetic variation in abdominal bristle number (21 percent for sternopleural bristle number) among 47 second chromosomes from a natural population was correlated with DNA sequence polymorphisms at this locus. Several polymorphic sites associated with large phenotypic effects occurred at intermediate frequency. Quantitative genetic variation in natural populations caused by alleles that have large effects at a few loci and that segregate at intermediate frequencies conflicts with the classical infinitesimal model of the genetic basis of quantitative variation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lai, C -- Lyman, R F -- Long, A D -- Langley, C H -- Mackay, T F -- GM45146/GM/NIGMS NIH HHS/ -- GM45344/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1697-702.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Population Biology, University of California at Davis 95616.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992053" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; DNA/genetics ; *Drosophila Proteins ; Drosophila melanogaster/anatomy & histology/*genetics ; Female ; *Genes, Insect ; *Genetic Variation ; *Glycoproteins ; Haplotypes ; Linkage Disequilibrium ; Male ; Molecular Sequence Data ; Phenotype ; *Polymorphism, Genetic ; Proteins/*genetics ; Restriction Mapping ; Sense Organs/anatomy & histology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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