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  • American Association for the Advancement of Science (AAAS)  (13,320)
  • American Chemical Society (ACS)
  • 1990-1994  (13,320)
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Years
Year
  • 1
    Publication Date: 1994-02-25
    Description: Activation of the serine-threonine kinase p34cdc2 at an inappropriate time during the cell cycle leads to cell death that resembles apoptosis. Premature activation of p34cdc2 was shown to be required for apoptosis induced by a lymphocyte granule protease. The kinase was rapidly activated and tyrosine dephosphorylated at the initiation of apoptosis. DNA fragmentation and nuclear collapse could be prevented by blocking p34cdc2 activity with excess peptide substrate, or by inactivating p34cdc2 in a temperature-sensitive mutant. Premature p34cdc2 activation may be a general mechanism by which cells induced to undergo apoptosis initiate the disruption of the nucleus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, L -- Nishioka, W K -- Th'ng, J -- Bradbury, E M -- Litchfield, D W -- Greenberg, A H -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1143-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Manitoba Institute of Cell Biology, University of Manitoba, Winnipeg, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8108732" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Apoptosis ; CDC2 Protein Kinase/*metabolism ; DNA Damage ; Deoxyribonucleases/pharmacology ; Enzyme Activation ; Enzyme Induction ; Membrane Glycoproteins/pharmacology ; Mice ; Mitosis ; Molecular Sequence Data ; Perforin ; Phosphorylation ; Pore Forming Cytotoxic Proteins ; Serine Endopeptidases/pharmacology ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 15;264(5157):342.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836890" target="_blank"〉PubMed〈/a〉
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 30;265(5181):2119.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17811416" target="_blank"〉PubMed〈/a〉
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  • 4
    Publication Date: 1994-01-07
    Description: Coexpression of the human Met receptor and its ligand, hepatocyte growth factor/scatter factor (HGF/SF), in NIH 3T3 fibroblasts causes the cells to become tumorigenic in nude mice. The resultant tumors display lumen-like morphology, contain carcinoma-like focal areas with intercellular junctions resembling desmosomes, and coexpress epithelial (cytokeratin) and mesenchymal (vimentin) cytoskeletal markers. The tumor cells also display enhanced expression of desmosomal and tight-junction proteins. The apparent mesenchymal to epithelial conversion of the tumor cells mimics the conversion that occurs during embryonic kidney development, suggesting that Met-HGF/SF signaling plays a role in this process as well as in tumors that express both epithelial and mesenchymal markers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsarfaty, I -- Rong, S -- Resau, J H -- Rulong, S -- da Silva, P P -- Vande Woude, G F -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):98-101.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ABL-Basic Research Program, National Cancer Institute (NCI)-Frederick Cancer Research and Development Center, MD 21702-1201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7505952" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Transformation, Neoplastic ; Desmosomes/ultrastructure ; Epithelial Cells ; Hepatocyte Growth Factor/metabolism/pharmacology ; Keratins/biosynthesis ; Kidney/embryology/metabolism ; Mesoderm/cytology ; Mice ; Mice, Nude ; Neoplasms, Experimental/metabolism/*pathology ; Proto-Oncogene Proteins/genetics/*metabolism ; Proto-Oncogene Proteins c-met ; *Proto-Oncogenes ; Receptor Protein-Tyrosine Kinases/genetics/*metabolism ; Signal Transduction ; Transfection ; Vimentin/biosynthesis
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harrison, W -- New York, N.Y. -- Science. 1994 Jan 21;263(5145):306.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8278798" target="_blank"〉PubMed〈/a〉
    Keywords: Michigan ; Scientific Misconduct/*legislation & jurisprudence ; *Universities
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mathis, J -- New York, N.Y. -- Science. 1994 May 20;264(5162):1181.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17744902" target="_blank"〉PubMed〈/a〉
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matlack, A S -- New York, N.Y. -- Science. 1994 Sep 16;265(5179):1641.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17770877" target="_blank"〉PubMed〈/a〉
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-03-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1366.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17776497" target="_blank"〉PubMed〈/a〉
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 15;264(5157):343.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836893" target="_blank"〉PubMed〈/a〉
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-07-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheridan, T E -- New York, N.Y. -- Science. 1994 Jul 8;265(5169):270.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17750670" target="_blank"〉PubMed〈/a〉
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-03-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Mar 4;263(5151):1216.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8122099" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; *Clinical Trials as Topic ; Female ; Humans ; Informed Consent ; *Institute of Medicine (U.S.) ; National Institutes of Health (U.S.) ; *Pregnancy ; *Pregnant Women ; Research Subjects ; United States ; *Women's Health
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  • 12
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-10-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sherwood, M -- New York, N.Y. -- Science. 1994 Oct 28;266(5185):663-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17793459" target="_blank"〉PubMed〈/a〉
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hartmann, D H -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):47-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17748347" target="_blank"〉PubMed〈/a〉
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  • 14
    Publication Date: 1994-05-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patience, C -- McKnight, A -- Clapham, P R -- Boyd, M T -- Weiss, R A -- Schulz, T F -- G117/547/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 1994 May 20;264(5162):1159-60; author reply 1162-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7909960" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/*physiology ; Antigens, Differentiation, T-Lymphocyte/*physiology ; Base Sequence ; Cats ; Cell Line ; Dipeptidyl Peptidase 4 ; HIV-1/*physiology ; Humans ; Mink ; Molecular Sequence Data
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  • 15
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kinoshita, J -- Mervis, J -- New York, N.Y. -- Science. 1994 Nov 18;266(5188):1187.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973699" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; *Gene Library ; *Genome, Plant ; International Cooperation ; Japan ; Oryza/*genetics ; United States
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  • 16
    Publication Date: 1994-07-08
    Description: Scanning tunneling microscopy (STM) studies have demonstrated that monolayer-deep, flat-bottomed, circular etch pits can be grown on highly ordered pyrolytic graphite by high-temperature etching in the presence of oxygen. In this work, these graphite etch pits are used as "molecule corrals" to isolate ensembles of molecules for study by STM. The nucleation of self-assembled molecular films in the corrals took place by nucleation events separate from those leading to self-assembly on the surrounding terrace and allowed the measurement of the nucleation rate constant in the corrals. The dependence of the nucleation rate for self-assembly on pit size shows that nucleation occurs at open terrace sites and that step edges (that is, the corral's perimeter) and confinement inhibit film growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patrick, D L -- Cee, V J -- Beebe, T P Jr -- New York, N.Y. -- Science. 1994 Jul 8;265(5169):231-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17750666" target="_blank"〉PubMed〈/a〉
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-02-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1080, 1082.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8108722" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Clinical Trials as Topic ; Databases, Factual ; Humans ; Medical Records ; *Outcome Assessment (Health Care)/economics ; Retrospective Studies ; Treatment Outcome ; United States ; *United States Agency for Healthcare Research and Quality/economics
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tuttle, R H -- New York, N.Y. -- Science. 1994 Apr 22;264(5158):602-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17732743" target="_blank"〉PubMed〈/a〉
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 15;264(5157):342-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836888" target="_blank"〉PubMed〈/a〉
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  • 20
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pauly, P J -- New York, N.Y. -- Science. 1994 Apr 15;264(5157):445-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836907" target="_blank"〉PubMed〈/a〉
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  • 21
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-10-14
    Description: An activity that severs stable microtubules is thought to be involved in microtubule reorganization during the cell cycle. Here, a 48-kilodalton microtubule-severing protein was purified from Xenopus eggs and identified as translational elongation factor 1 alpha (EF-1 alpha). Bacterially expressed human EF-1 alpha also displayed microtubule-severing activity in vitro and, when microinjected into fibroblasts, induced rapid and transient fragmentation of cytoplasmic microtubule arrays. Thus, EF-1 alpha, an essential component of the eukaryotic translational apparatus, appears to have a second role as a regulator of cytoskeletal rearrangements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shiina, N -- Gotoh, Y -- Kubomura, N -- Iwamatsu, A -- Nishida, E -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):282-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Molecular Biology, Kyoto University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939665" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/pharmacology ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Guanosine Triphosphate/analogs & derivatives/metabolism ; Humans ; Microtubules/drug effects/*metabolism ; Molecular Sequence Data ; Molecular Weight ; Oocytes ; Peptide Elongation Factor 1 ; Peptide Elongation Factors/chemistry/isolation & purification/*physiology ; Rats ; Recombinant Proteins/pharmacology ; Ribonucleoproteins/chemistry/isolation & purification/*physiology ; Sepharose/analogs & derivatives/metabolism ; Xenopus laevis
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  • 22
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-08-26
    Description: The interaction of B7-related molecules on antigen-presenting cells with CD28 or CTLA-4 antigens on T cells provides a second signal for T cell activation. Selection inhibition of the B7-CD28 or B7-CTLA-4 interactions produces antigen-specific T cell unresponsiveness in vitro and suppresses immune function in vivo. To determine whether selective inhibition of the B7-CD28 or B7-CTLA-4 interactions could suppress spontaneous autoimmune disease, a B7-binding protein was generated by genetic fusion of the extracellular domain of murine CTLA-4 to the Fc portion of a mouse immunoglobulin G2a monoclonal antibody (muCTLA4Ig). In lupus-prone NZB/NZW filial generation (F1) mice, treatment with muCTLA4Ig blocked autoantibody production and prolonged life, even when treatment was delayed until the most advanced stage of clinical illness. These findings suggest a possible role for human CTLA4Ig in the treatment of autoimmune diseases in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finck, B K -- Linsley, P S -- Wofsy, D -- New York, N.Y. -- Science. 1994 Aug 26;265(5176):1225-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Francisco.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7520604" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antibodies, Antinuclear/biosynthesis ; Antibodies, Monoclonal ; Antigens, CD ; Antigens, CD80/metabolism ; Antigens, Differentiation/immunology/metabolism/*therapeutic use ; B-Lymphocytes/immunology ; CTLA-4 Antigen ; Female ; Humans ; *Immunoconjugates ; Immunotherapy ; Lupus Erythematosus, Systemic/immunology/*therapy ; Mice ; Mice, Inbred NZB ; Mice, Inbred Strains ; Recombinant Fusion Proteins/therapeutic use ; T-Lymphocytes/immunology
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  • 23
    Publication Date: 1994-11-11
    Description: Computer simulations and animations of the motion of atoms as a chemical reaction proceeds give a detailed picture of how the reaction occurs at a microscopic level. This information is particularly useful for testing the accuracy of statistical models, which are used to calculate various attributes of chemical reactions. Such simulations and animations, in concert with experimental and ab initio studies, have begun to provide a microscopic picture of the intimate details of a particular class of gas-phase ion-molecule bimolecular reactions known as S(N)2 nucleophilic substitution. In these reactions, a nucleophile is displaced from a molecule by another nucleophile. The dynamical model of S(N)2 reactions that emerges from the computer studies, and its relation to statistical theories, is discussed here.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hase, W L -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):998-1002.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17779941" target="_blank"〉PubMed〈/a〉
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  • 24
    Publication Date: 1994-12-23
    Description: GAL4-VP16-mediated nucleosome reconfiguration and transcriptional activation were observed with preassembled chromatin templates that contained regular and physiological nucleosome spacing. Both processes were dependent on adenosine triphosphate (ATP), although binding of GAL4-VP16 to the chromatin was ATP-independent. Factor-mediated nucleosome reconfiguration was not, however, sufficient for transcriptional activation. These experiments recreate in vitro the active participation of nucleosomal cores in the regulation of transcription that occurs in vivo, and they suggest a multistep pathway for transcriptional activation in which factor- and ATP-dependent nucleosome reconfiguration is followed by facilitation by the DNA-bound activator of transcription from the repressed chromatin template.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pazin, M J -- Kamakaka, R T -- Kadonaga, J T -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):2007-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of California, San Diego, La Jolla 92093-0347.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801129" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism ; Animals ; Chromatin/chemistry/*metabolism ; DNA/metabolism ; DNA-Binding Proteins ; Drosophila ; Fungal Proteins/metabolism ; Models, Genetic ; Nucleosomes/chemistry/*metabolism ; *Saccharomyces cerevisiae Proteins ; Templates, Genetic ; Trans-Activators/metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation
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  • 25
    Publication Date: 1994-05-13
    Description: In Drosophila, the misexpression or altered activity of genes from the bithorax complex results in homeotic transformations. One of these genes, abd-A, normally specifies the identity of the second through fourth abdominal segments (A2 to A4). In the dominant Hyperabdominal mutations (Hab), portions of the third thoracic segment (T3) are transformed toward A2 as the result of ectopic abd-A expression. Sequence analysis and deoxyribonuclease I footprinting demonstrate that the misexpression of abd-A in two independent Hab mutations results from the same single base change in a binding site for the gap gene Kruppel protein. These results establish that the spatial limits of the homeotic genes are directly regulated by gap gene products.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shimell, M J -- Simon, J -- Bender, W -- O'Connor, M B -- New York, N.Y. -- Science. 1994 May 13;264(5161):968-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Biochemistry, University of California, Irvine 92717.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7909957" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; DNA-Binding Proteins/genetics/metabolism ; *Drosophila Proteins ; Drosophila melanogaster/embryology/*genetics ; Enhancer Elements, Genetic/*genetics ; Gene Expression Regulation ; *Genes, Homeobox ; Genes, Insect ; Kruppel-Like Transcription Factors ; Molecular Sequence Data ; *Nuclear Proteins ; *Point Mutation ; Proteins/*genetics ; Regulatory Sequences, Nucleic Acid ; *Repressor Proteins ; Transcription Factors/genetics/metabolism
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  • 26
    Publication Date: 1994-12-02
    Description: The nucleoli of vertebrate cells contain a number of small RNAs that are generated by the processing of intron fragments of protein-coding gene transcripts. The host gene (UHG) for intro-encoded human U22 is unusual in that it specifies a polyadenylated but apparently noncoding RNA. Depletion of U22 from Xenopus oocytes by oligonucleotide-directed ribonuclease H targeting prevented the processing of 18S ribosomal RNA (rRNA) at both ends. The appearance of 18S rRNA was restored by injection of in vitro-synthesized U22 RNA. These results identify a cellular function for an intron-encoded small RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tycowski, K T -- Shu, M D -- Steitz, J A -- GM26154/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 2;266(5190):1558-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06536.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7985025" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Blotting, Northern ; Cell Nucleolus/*chemistry ; Humans ; *Introns ; Molecular Sequence Data ; Oligonucleotide Probes ; Oocytes/metabolism ; RNA Precursors/*metabolism ; RNA Processing, Post-Transcriptional ; RNA, Nuclear/chemistry/*genetics/*physiology ; RNA, Ribosomal, 18S/*metabolism ; RNA, Small Nuclear/chemistry/*genetics/*physiology ; Xenopus
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 30;265(5181):2006.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17811399" target="_blank"〉PubMed〈/a〉
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 15;264(5157):335.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836885" target="_blank"〉PubMed〈/a〉
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  • 29
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-08-12
    Description: Commonly, linear replicons that have protein covalently attached to 5' DNA termini replicate by protein-primed, strand-displacing, continuous synthesis of full-length strands. The synthesis of DNA in pSLA2, a 17-kilobase linear plasmid of Streptomyces rochei containing 5' terminal protein, occurs bidirectionally from an internally located replication origin. The replication intermediates are linear duplex molecules that have recessed (approximately 280 nucleotides) 5' ends rather than full-length single strands. The 3' over-hangs may serve as templates for the non-displacing synthesis of the lagging strand terminus primed by the covalently attached 5' DNA binding protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, P C -- Cohen, S N -- New York, N.Y. -- Science. 1994 Aug 12;265(5174):952-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Stanford University School of Medicine, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8052852" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/metabolism ; *DNA Replication ; DNA, Bacterial/biosynthesis/genetics ; DNA-Binding Proteins/metabolism ; *Plasmids ; *Replicon ; Streptomyces/*genetics/metabolism ; Telomere ; Transformation, Bacterial
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hastenrath, S -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1790-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797202" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-06-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayr, E -- New York, N.Y. -- Science. 1994 Jun 10;264(5165):1519.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769585" target="_blank"〉PubMed〈/a〉
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  • 32
    Publication Date: 1994-11-25
    Description: Direct studies of diradicals, the molecular species hypothesized to be archetypal of chemical bond transformations in many classes of reactions, have been made using femtosecond laser techniques with mass spectrometry in a molecular beam. These studies are aimed at "freezing" the diradicals in time and in the course of the reaction. The passage of these species through the transition-state region was observed and the effect of total energy and alkyl substitution on the rates of bond closure and cleavage was examined. The results establish the nature of these intermediates and define their existence during reactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pedersen, S -- Herek, J L -- Zewail, A H -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1359-64.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17772843" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shinbrot, T -- New York, N.Y. -- Science. 1994 Jan 28;263(5146):455.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17754871" target="_blank"〉PubMed〈/a〉
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  • 34
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 30;265(5181):2006.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17811398" target="_blank"〉PubMed〈/a〉
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-25
    Description: The splicing of group II introns occurs in two steps involving substrates with different chemical configurations. The question of whether these two steps are catalyzed by a single or two separate active sites is a matter of debate. Here, certain bases and phosphate oxygen atoms at conserved positions in domain V of a group II self-splicing intron are shown to be required for catalysis of both splicing steps. These results show that the active sites catalyzing the two steps must, at least, share common components, ruling out the existence of two completely distinct active sites in group II introns.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chanfreau, G -- Jacquier, A -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1383-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite de Genetique Moleculaire des Levures, URA 1149 du CNRS, Departement de Biologie Moleculaire, Institut Pasteur, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973729" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Catalysis ; Electron Transport Complex IV/genetics ; Electrophoresis, Polyacrylamide Gel ; Exons ; *Introns ; Molecular Sequence Data ; Nucleic Acid Conformation ; *RNA Splicing ; RNA, Fungal/chemistry/*genetics ; Saccharomyces cerevisiae/enzymology/genetics ; Thionucleotides/genetics
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-02-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Feb 18;263(5149):909-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8310287" target="_blank"〉PubMed〈/a〉
    Keywords: *Biotechnology ; *Federal Government ; *Genes ; Internationality ; *National Institutes of Health (U.S.) ; *Patents as Topic ; United States
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-15
    Description: In the Random Sample "Venuses reappear" (18 Feb., p. 923), Patricia Rice of West Virginia University is incorrectly identified as "Patricia White." Randall White of New York University is the source of quotes attributed to "White."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 15;264(5157):331.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17836883" target="_blank"〉PubMed〈/a〉
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  • 38
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayr, E -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):715-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17730378" target="_blank"〉PubMed〈/a〉
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  • 39
    Publication Date: 1994-10-14
    Description: The rate at which the TATA-binding protein (TBP) interacts with the TATA element and promotes transcription by RNA polymerase II was determined in yeast cells. A TBP derivative with altered TATA-element specificity was rapidly induced, and transcription from promoters with appropriately mutated TATA elements was measured. Without a functional activator protein, basal transcription was observed only after a lag of several hours. In contrast, GCN4-activated transcription occurred rapidly upon induction of the TBP derivative. These results suggest that accessibility of TBP to the chromatin template in vivo is rate limiting and that activation domains increase recruitment of TBP to the promoter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, C -- Struhl, K -- GM30186/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):280-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939664" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Chromatin/metabolism ; Copper/pharmacology ; DNA-Binding Proteins/*metabolism ; Fungal Proteins/metabolism/pharmacology ; Hydro-Lyases/genetics ; Molecular Sequence Data ; Protein Kinases/metabolism/pharmacology ; *Saccharomyces cerevisiae Proteins ; *TATA Box ; TATA-Box Binding Protein ; Templates, Genetic ; Transcription Factors/*metabolism/pharmacology ; *Transcriptional Activation ; Yeasts/genetics
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  • 40
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-04
    Description: An activity in human cell extracts is described that repairs DNA with loops of five or more unpaired bases. Repair is strand-specific and is directed by a nick located 5' or 3' to the loop. This repair is observed in a colorectal cancer cell line that is devoid of a wild-type hMLH1 gene and is deficient in repair of mismatches. However, a cell line with deletions in both hMSH2 alleles is deficient in repair of both loops and mismatches. Defects in loop repair may be relevant to the repetitive-sequence instability observed in cancers and other hereditary diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Umar, A -- Boyer, J C -- Kunkel, T A -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):814-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973637" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Base Composition ; Base Sequence ; Carrier Proteins ; Cell Extracts ; Cell Line ; Colorectal Neoplasms/*genetics ; *DNA Repair ; DNA, Satellite/genetics/metabolism ; *DNA-Binding Proteins ; HeLa Cells ; Humans ; Molecular Sequence Data ; MutS Homolog 2 Protein ; Neoplasm Proteins/*genetics/physiology ; Nuclear Proteins ; Nucleic Acid Heteroduplexes/*metabolism ; Proto-Oncogene Proteins/*genetics/physiology ; Repetitive Sequences, Nucleic Acid ; Tumor Cells, Cultured
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knoppers, B M -- Chadwick, R -- New York, N.Y. -- Science. 1994 Sep 30;265(5181):2035-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Faculty of Law, University of Montreal, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8091225" target="_blank"〉PubMed〈/a〉
    Keywords: *Bioethics ; Civil Rights ; Confidentiality ; Genetic Testing ; *Human Genome Project/legislation & jurisprudence ; Humans ; International Cooperation ; *Internationality ; Minors ; Patient Selection ; Personal Autonomy
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 8;264(5156):205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17749018" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-06-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fischer, J E -- New York, N.Y. -- Science. 1994 Jun 10;264(5165):1548-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769594" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shu, F H -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1789.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797201" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1807.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797216" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1807.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797215" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Siber, G R -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1385-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Massachusetts Public Health Biologic Laboratories, Boston.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8073278" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Capsules/immunology ; *Bacterial Vaccines/immunology ; Child ; Clinical Trials as Topic ; Humans ; Infant ; Pneumococcal Infections/*prevention & control ; Pneumococcal Vaccines ; Pneumonia, Pneumococcal/prevention & control ; Streptococcus pneumoniae/*immunology ; T-Lymphocytes/immunology ; Vaccines, Conjugate/immunology
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-07-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- Marshall, E -- Mervis, J -- New York, N.Y. -- Science. 1994 Jul 8;265(5169):180.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17750645" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koenig, R -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1636.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17775615" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fischman, J -- New York, N.Y. -- Science. 1994 Sep 30;265(5181):2011-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8091222" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Ethiopia ; *Fossils ; History, Ancient ; Hominidae/*classification ; Humans ; Paleodontology ; Pan troglodytes/*classification
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koff, W C -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1335-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉United Biomedical, Hauppauge, NY 11790.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973724" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines/economics ; Acquired Immunodeficiency Syndrome/*prevention & control ; Clinical Trials as Topic/economics ; Costs and Cost Analysis ; Drug Approval ; Drug Industry ; Financing, Government ; Global Health ; Humans ; Immunization Programs ; International Cooperation ; Legislation, Drug ; Liability, Legal ; Licensure
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-08
    Description: Neutron scattering has played a key role in the microscopic understanding of the static and dynamic properties of magnetic materials. Modulated magnetic structures first discovered in the late fifties can no longer be referred to as exotic; more than a hundred such phases have already been found in a variety of magnetic systems. Neutron and x-ray magnetic scattering have played a complementary role in the recent discovery and understanding of the modulated magnetic phases in rare earth metallic systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chattopadhyay, T -- New York, N.Y. -- Science. 1994 Apr 8;264(5156):226-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17749019" target="_blank"〉PubMed〈/a〉
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  • 53
    Publication Date: 1994-08-19
    Description: The Xlsirts are a family of transcribed repeat sequence genes that do not code for protein. Xlsirt RNAs become localized to the vegetal cortex of Xenopus oocytes early in oogenesis, before the localization of the messenger RNA Vg1, which encodes a transforming growth factor-beta-like molecule involved in mesoderm formation, and coincident with the localization of Xcat2 transcripts, which encode a nanos-like molecule. Destruction of the localized Xlsirts by injection of antisense oligodeoxynucleotides into stage 4 oocytes resulted in the release of Vg1 transcripts but not Xcat2 transcripts from the vegetal cortex. Xlsirt RNAs, which may be a structural component of the vegetal cortex, are a crucial part of a genetic pathway necessary for the proper localization of Vg1 that leads to subsequent normal pattern formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kloc, M -- Etkin, L D -- New York, N.Y. -- Science. 1994 Aug 19;265(5175):1101-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics, University of Texas, M.D. Anderson Cancer Center, Houston 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7520603" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Glycoproteins/*genetics ; Molecular Sequence Data ; Oligonucleotides, Antisense/pharmacology ; Oogenesis ; RNA/*genetics ; RNA, Messenger/genetics/*metabolism ; RNA-Binding Proteins/genetics ; Repetitive Sequences, Nucleic Acid ; Transforming Growth Factor beta/genetics ; Xenopus ; *Xenopus Proteins ; Zinc Fingers
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pelletier, H -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):2025-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801132" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Biological Evolution ; Catalysis ; DNA Polymerase I/*chemistry/metabolism ; Protein Structure, Secondary
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  • 55
    Publication Date: 1994-02-25
    Description: With low-temperature scanning electron microscopy, the magnetic flux states in high critical temperature Josephson junctions have been imaged. The experiments were performed with YBa(2)Cu(3)O(7-delta) thin-film grain boundary Josephson junctions fabricated on [001] tilt SrTiO(3) bicrystals. For applied magnetic fields parallel to the grain boundary plane, which correspond to local maxima of the magnetic field dependence of the critical current, the images clearly show the corresponding magnetic flux states in the grain boundary junction. The spatial modulation of the Josephson current density by the external magnetic field is imaged directly with a spatial resolution of about 1 micrometer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fischer, G M -- Mayer, B -- Gross, R -- Nissel, T -- Husemann, K D -- Huebener, R P -- Freltoft, T -- Shen, Y -- Vase, P -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1112-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17831622" target="_blank"〉PubMed〈/a〉
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  • 56
    Publication Date: 1994-06-24
    Description: Two ternary complexes of rat DNA polymerase beta (pol beta), a DNA template-primer, and dideoxycytidine triphosphate (ddCTP) have been determined at 2.9 A and 3.6 A resolution, respectively. ddCTP is the triphosphate of dideoxycytidine (ddC), a nucleoside analog that targets the reverse transcriptase of human immunodeficiency virus (HIV) and is at present used to treat AIDS. Although crystals of the two complexes belong to different space groups, the structures are similar, suggesting that the polymerase-DNA-ddCTP interactions are not affected by crystal packing forces. In the pol beta active site, the attacking 3'-OH of the elongating primer, the ddCTP phosphates, and two Mg2+ ions are all clustered around Asp190, Asp192, and Asp256. Two of these residues, Asp190 and Asp256, are present in the amino acid sequences of all polymerases so far studied and are also spatially similar in the four polymerases--the Klenow fragment of Escherichia coli DNA polymerase I, HIV-1 reverse transcriptase, T7 RNA polymerase, and rat DNA pol beta--whose crystal structures are now known. A two-metal ion mechanism is described for the nucleotidyl transfer reaction and may apply to all polymerases. In the ternary complex structures analyzed, pol beta binds to the DNA template-primer in a different manner from that recently proposed for other polymerase-DNA models.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pelletier, H -- Sawaya, M R -- Kumar, A -- Wilson, S H -- Kraut, J -- CA17374/CA/NCI NIH HHS/ -- ES06839/ES/NIEHS NIH HHS/ -- GM10928/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Jun 24;264(5167):1891-903.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, San Diego 92093-0317.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7516580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; DNA Polymerase I/*chemistry/metabolism ; DNA Primers/*chemistry/metabolism ; DNA-Directed RNA Polymerases/chemistry/metabolism ; Deoxycytosine Nucleotides/*chemistry/metabolism ; Dideoxynucleotides ; HIV Reverse Transcriptase ; Humans ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; RNA-Directed DNA Polymerase/chemistry/metabolism ; Rats ; Recombinant Proteins ; Templates, Genetic ; Thymine Nucleotides/chemistry/metabolism ; Viral Proteins ; Zidovudine/analogs & derivatives/chemistry/metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haydock, K -- New York, N.Y. -- Science. 1994 May 27;264(5163):1238.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17780822" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Valigra, L -- New York, N.Y. -- Science. 1994 Jan 14;263(5144):168-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8284666" target="_blank"〉PubMed〈/a〉
    Keywords: *Biotechnology ; *International Cooperation ; Japan ; *Research ; United States
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  • 59
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-07-08
    Description: A gravitationally self-consistent theory of postglacial relative sea level change is used to infer the variation of surface ice and water cover since the Last Glacial Maximum (LGM). The results show that LGM ice volume was approximately 35 percent lower than suggested by the CLIMAP reconstruction and the maximum heights of the main Laurentian and Fennoscandian ice complexes are inferred to have been commensurately lower with respect to sea level. Use of these Ice Age boundary conditions in atmospheric general circulation models will yield climates that differ significantly from those previously inferred on the basis of the CLIMAP data set.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peltier, W R -- New York, N.Y. -- Science. 1994 Jul 8;265(5169):195-201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17750657" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-06-17
    Description: Noninfectious, cytoplasmically transmissible viral double-stranded RNAs of the genus Hypovirus cause reduced virulence (hypovirulence) in the chestnut blight fungus Cryphonectria parasitica, providing the basis for virus-mediated biological control of a fungal disease. Synthetic transcripts corresponding to a full-length hypovirus RNA coding strand are infectious when introduced into fungal spheroplasts by electroporation. Hypovirus infections were readily established in Cryphonectria parasitica and in related fungal species not previously reported to harbor viruses. These results demonstrate the use of a synthetic mycovirus transcript to expand fungal host range, thereby broadening the potential application of virus-mediated hypovirulence to control fungal pathogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, B -- Choi, G H -- Nuss, D L -- New York, N.Y. -- Science. 1994 Jun 17;264(5166):1762-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Roche Institute of Molecular Biology, Roche Research Center, Nutley, NJ 07110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8209256" target="_blank"〉PubMed〈/a〉
    Keywords: Ascomycota/genetics/*pathogenicity/physiology ; Base Sequence ; DNA, Complementary/genetics ; Electroporation ; Molecular Sequence Data ; Phenotype ; Plant Diseases ; RNA Viruses/*genetics/physiology ; RNA, Double-Stranded/*genetics ; RNA, Viral/*genetics ; Spheroplasts ; Transfection ; Virulence ; Virus Replication
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-02-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Alfen, N K -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1163-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17831634" target="_blank"〉PubMed〈/a〉
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  • 62
    Publication Date: 1994-08-12
    Description: Strategies to cleave double-stranded DNA at specific DNA sites longer than those of restriction endonucleases (longer than 8 base pairs) have applications in chromosome mapping, chromosome cloning, and chromosome sequencing--provided that the strategies yield high DNA-cleavage efficiency and high DNA-cleavage specificity. In this report, the DNA-cleaving moiety copper:o-phenanthroline was attached to the sequence-specific DNA binding protein catabolite activator protein (CAP) at an amino acid that, because of a difference in DNA bending, is close to DNA in the specific CAP-DNA complex but is not close to DNA in the nonspecific CAP-DNA complex. The resulting CAP derivative, OP26CAP, cleaved kilobase and megabase DNA substrates at a 22-base pair consensus DNA site with high efficiency and exhibited no detectable nonspecific DNA-cleavage activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pendergrast, P S -- Ebright, Y W -- Ebright, R H -- GM41376/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Aug 12;265(5174):959-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Rutgers University, New Brunswick, NJ 08855.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8052855" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cyclic AMP Receptor Protein/*chemistry ; DNA/*chemistry/metabolism ; DNA-Binding Proteins/*chemistry ; Molecular Sequence Data ; Molecular Structure ; Nucleic Acid Conformation ; Phenanthrolines/*chemistry
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C W -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):837.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17730403" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-07-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGown, L B -- Li, G -- New York, N.Y. -- Science. 1994 Jul 22;265(5171):459.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17781291" target="_blank"〉PubMed〈/a〉
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  • 65
    Publication Date: 1994-08-05
    Description: A multiple page fully digital holographic data storage system is demonstrated. This system is used to store and retrieve digital image and compressed video data with a photorefractive crystal. Architecture issues related to spatio-rotational multiplexing and novel error-correcting encoding techniques used to achieve low bit-error rates are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heanue, J F -- Bashaw, M C -- Hesselink, L -- New York, N.Y. -- Science. 1994 Aug 5;265(5173):749-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17736271" target="_blank"〉PubMed〈/a〉
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  • 66
    Publication Date: 1994-10-14
    Description: Mice deficient for the gene encoding alpha-calcium-calmodulin-dependent kinase II (alpha-CaMKII knockout mice) provide a promising tool to link behavioral and cellular abnormalities with a specific molecular lesion. The heterozygous mouse exhibited a well-circumscribed syndrome of behavioral abnormalities, consisting primarily of a decreased fear response and an increase in defensive aggression, in the absence of any measured cognitive deficits. Unlike the heterozygote, the homozygote displayed abnormal behavior in all paradigms tested. At the cellular level, both extracellular and whole-cell patch clamp recordings indicated that serotonin release in putative serotonergic neurons of the dorsal raphe was reduced. Thus, alpha-CaMKII knockout mice, in particular the heterozygote, may provide a model for studying the molecular and cellular basis underlying emotional disorders involving fear and aggression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, C -- Rainnie, D G -- Greene, R W -- Tonegawa, S -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):291-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Center for Cancer Research, Cambridge, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939668" target="_blank"〉PubMed〈/a〉
    Keywords: *Aggression ; Animals ; Behavior, Animal ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/deficiency/genetics/*physiology ; *Fear ; Fluoxetine/pharmacology ; Gene Dosage ; Heterozygote ; Homozygote ; In Vitro Techniques ; Membrane Potentials ; Mice ; Mice, Knockout ; Mutation ; Neurons/metabolism ; Patch-Clamp Techniques ; Raphe Nuclei/metabolism ; Serotonin/metabolism/pharmacology ; Synaptic Transmission/drug effects
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sietmann, R -- New York, N.Y. -- Science. 1994 Jan 21;263(5145):316.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769785" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 8;264(5156):205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17749015" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1806.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797213" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-03-04
    Description: Conversion of external signals into proliferative responses may be mediated by interactions between signaling pathways that control cell proliferation. Interactions between G alpha s, the alpha subunit of the heterotrimeric guanine nucleotide binding protein that stimulates adenylyl cyclase, and Ras, an important element in growth factor signaling, were studied. Expression of activated G alpha s in NIH 3T3 cells increased intracellular concentrations of adenosine 3',5'-monophosphate (cAMP) and inhibited H-Ras-stimulated DNA synthesis and mitogen-activated protein kinase activity. Activated G alpha s and 8-Br-cAMP suppressed H-Ras-induced transformation of NIH 3T3 cells. Apparently, G alpha s inhibits proliferative signals from Ras by stimulating cAMP production and activating protein kinase A.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, J -- Iyengar, R -- CA-44998/CA/NCI NIH HHS/ -- DK-38761/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1994 Mar 4;263(5151):1278-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Mount Sinai School of Medicine, City University of New York, NY 10029.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8122111" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; 8-Bromo Cyclic Adenosine Monophosphate/pharmacology ; Animals ; Cell Division ; Cell Line ; *Cell Transformation, Neoplastic ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Enzyme Activation ; GTP-Binding Proteins/genetics/*physiology ; *Genes, ras ; Mice ; Mitogen-Activated Protein Kinase 1 ; Mutagenesis, Site-Directed ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/metabolism ; Protein-Tyrosine Kinases/antagonists & inhibitors/metabolism ; Signal Transduction ; Transfection
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perez, J -- New York, N.Y. -- Science. 1994 May 27;264(5163):1238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17780821" target="_blank"〉PubMed〈/a〉
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1806.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797212" target="_blank"〉PubMed〈/a〉
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-08-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McHenry, H M -- New York, N.Y. -- Science. 1994 Aug 19;265(5175):1116-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17832908" target="_blank"〉PubMed〈/a〉
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  • 74
    Publication Date: 1994-11-11
    Description: The venom of the funnel-web spider Agelenopsis aperta contains several peptides that paralyze prey by blocking voltage-sensitive calcium channels. Two peptides, omega-Aga-IVB (IVB) and omega-Aga-IVC (IVC), have identical amino acid sequences, yet have opposite absolute configurations at serine 46. These toxins had similar selectivities for blocking voltage-sensitive calcium channel subtypes but different potencies for blocking P-type voltage-sensitive calcium channels in rat cerebellar Purkinje cells as well as calcium-45 influx into rat brain synaptosomes. An enzyme purified from venom converts IVC to IVB by isomerizing serine 46, which is present in the carboxyl-terminal tail, from the L to the D configuration. Unlike the carboxyl terminus of IVC, that of IVB was resistant to the major venom protease. These results show enzymatic activities in A. aperta venom being used in an unprecedented strategy for coproduction of necessary neurotoxins that possess enhanced stability and potency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heck, S D -- Siok, C J -- Krapcho, K J -- Kelbaugh, P R -- Thadeio, P F -- Welch, M J -- Williams, R D -- Ganong, A H -- Kelly, M E -- Lanzetti, A J -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):1065-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉NPS Pharmaceuticals Incorporated, Salt Lake City, Utah 84108.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973665" target="_blank"〉PubMed〈/a〉
    Keywords: Agatoxins ; Amino Acid Sequence ; Animals ; Base Sequence ; Calcium/metabolism ; Calcium Channel Blockers/chemistry/*metabolism/toxicity ; Calcium Channels/*metabolism ; Isomerases/metabolism ; Molecular Sequence Data ; *Protein Processing, Post-Translational ; Purkinje Cells/metabolism ; Rats ; Serine/*metabolism ; Spider Venoms/chemistry/enzymology/*metabolism/toxicity ; Stereoisomerism ; Structure-Activity Relationship ; Synaptosomes/metabolism
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  • 75
    Publication Date: 1994-02-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van der Vink, G E -- Park, J -- New York, N.Y. -- Science. 1994 Feb 4;263(5147):634-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17747655" target="_blank"〉PubMed〈/a〉
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  • 76
    Publication Date: 1994-11-25
    Description: Alteration of the human mismatch repair gene hMSH2 has been linked to the microsatellite DNA instability found in hereditary nonpolyposis colon cancer and several sporadic cancers. This microsatellite DNA instability is thought to arise from defective repair of DNA replication errors that create insertion-deletion loop-type (IDL) mismatched nucleotides. Here, it is shown that purified hMSH2 protein efficiently and specifically binds DNA containing IDL mismatches of up to 14 nucleotides. These results support a direct role for hMSH2 in mutation avoidance and microsatellite stability in human cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fishel, R -- Ewel, A -- Lee, S -- Lescoe, M K -- Griffith, J -- CA56542/CA/NCI NIH HHS/ -- GM31819/GM/NIGMS NIH HHS/ -- GM42342/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1403-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, Markey Center for Molecular Genetics, University of Vermont School of Medicine, Burlington 05405.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973733" target="_blank"〉PubMed〈/a〉
    Keywords: Base Composition ; Base Sequence ; DNA Repair ; DNA, Satellite/*metabolism ; *DNA-Binding Proteins ; Humans ; Molecular Sequence Data ; MutS Homolog 2 Protein ; Nucleic Acid Conformation ; Nucleic Acid Heteroduplexes/metabolism ; Oligodeoxyribonucleotides/metabolism ; Proto-Oncogene Proteins/*metabolism
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  • 77
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1806-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797210" target="_blank"〉PubMed〈/a〉
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  • 78
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-08-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flajnik, M -- New York, N.Y. -- Science. 1994 Aug 26;265(5176):1254-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17787595" target="_blank"〉PubMed〈/a〉
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  • 79
    Publication Date: 1994-09-02
    Description: The platinum-rhodium tip of a scanning tunneling microscope that operates inside of an atmospheric-pressure chemical reactor cell has been used to locally rehydrogenate carbonaceous fragments deposited on the (111) surface of platinum. The carbon fragments were produced by partial dehydrogenation of propylene. The reactant gas environment inside the cell consisted of pure H(2) or a 1:9 mixture of CH(3)CHCH(2) and H(2) at 300 kelvin. The platinum-rhodium tip acted as a catalyst after activation by short voltage pulses. In this active state, the clusters in the area scanned by the tip were reacted away with very high spatial resolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McIntyre, B J -- Salmeron, M -- Somorjai, G A -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1415-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17833813" target="_blank"〉PubMed〈/a〉
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  • 80
    Publication Date: 1994-03-11
    Description: The gamma chain of the interleukin-2 (IL-2) receptor is shared with the functional IL-4 receptor and is causatively related to X-linked severe combined immunodeficiency (XSCID), which is ascribed to a profound T cell defect. Studies with monoclonal antibodies specific for the IL-2 receptor gamma chain showed that the gamma chain participates in the functional high-affinity receptor complexes for IL-7 that are involved in the differentiation of T and B cells. Participation of the gamma subunit in more than one receptor may enable the elucidation of the mechanisms of XSCID development and lymphocyte differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kondo, M -- Takeshita, T -- Higuchi, M -- Nakamura, M -- Sudo, T -- Nishikawa, S -- Sugamura, K -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1453-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Tohoku University School of Medicine, Sendai, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128231" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; B-Lymphocytes/*immunology ; Cell Line ; Cells, Cultured ; Female ; Genetic Linkage ; Interleukin-7/*metabolism/pharmacology ; Mice ; Mice, Inbred C57BL ; Receptors, Interleukin/*metabolism ; Receptors, Interleukin-2/genetics/immunology/*metabolism ; Receptors, Interleukin-7 ; Severe Combined Immunodeficiency/genetics/immunology ; T-Lymphocytes/*immunology ; X Chromosome
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  • 81
    Publication Date: 1994-04-01
    Description: The crystal structure of a ternary protein complex has been determined at 2.4 angstrom resolution. The complex is composed of three electron transfer proteins from Paracoccus denitrificans, the quinoprotein methylamine dehydrogenase, the blue copper protein amicyanin, and the cytochrome c551i. The central region of the c551i is folded similarly to several small bacterial c-type cytochromes; there is a 45-residue extension at the amino terminus and a 25-residue extension at the carboxyl terminus. The methylamine dehydrogenase-amicyanin interface is largely hydrophobic, whereas the amicyanin-cytochrome interface is more polar, with several charged groups present on each surface. Analysis of the simplest electron transfer pathways between the redox partners points out the importance of other factors such as energetics in determining the electron transfer rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, L -- Durley, R C -- Mathews, F S -- Davidson, V L -- GM41574/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Apr 1;264(5155):86-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8140419" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry/metabolism ; Computer Graphics ; Cytochrome c Group/*chemistry/metabolism ; Electron Transport ; Hydrogen Bonding ; *Indolequinones ; Models, Molecular ; Oxidation-Reduction ; Oxidoreductases Acting on CH-NH Group Donors/*chemistry/metabolism ; Paracoccus denitrificans/*chemistry/enzymology ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Quinones/chemistry/metabolism ; Software ; Tryptophan/analogs & derivatives/chemistry/metabolism
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  • 82
    Publication Date: 1994-08-26
    Description: Experimental autoimmune encephalomyelitis (EAE) is a cell-mediated autoimmune disease that serves as an animal model for multiple sclerosis. Oral administration of myelin basic protein (MBP) suppresses EAE by inducing peripheral tolerance. T cell clones were isolated from the mesenteric lymph nodes of SJL mice that had been orally tolerized to MBP. These clones were CD4+ and were structurally identical to T helper cell type 1 (TH1) encephalitogenic CD4+ clones in T cell receptor usage, major histocompatibility complex restriction, and epitope recognition. However, they produced transforming growth factor-beta with various amounts of interleukin-4 and interleukin-10 and suppressed EAE induced with either MBP or proteolipid protein. Thus, mucosally derived TH2-like clones induced by oral antigen can actively regulate immune responses in vivo and may represent a different subset of T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Y -- Kuchroo, V K -- Inobe, J -- Hafler, D A -- Weiner, H L -- AR/A143220/AR/NIAMS NIH HHS/ -- NS29352/NS/NINDS NIH HHS/ -- NS30843/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1994 Aug 26;265(5176):1237-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7520605" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Amino Acid Sequence ; Animals ; CD4-Positive T-Lymphocytes/*immunology ; Clone Cells ; Encephalomyelitis, Autoimmune, Experimental/*immunology ; Epitopes/immunology ; *Immune Tolerance ; Interleukin-10/biosynthesis ; Interleukin-4/biosynthesis ; Lymph Nodes/immunology ; Major Histocompatibility Complex ; Mesentery/immunology ; Mice ; Molecular Sequence Data ; Myelin Basic Protein/administration & dosage/*immunology ; Myelin Proteins/immunology ; Myelin Proteolipid Protein ; Receptors, Antigen, T-Cell/immunology ; Transforming Growth Factor beta/biosynthesis
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  • 83
    Publication Date: 1994-09-23
    Description: Indirect evidence implicates gamma delta T cells in the cross-regulation of CD4 alpha beta T cell responses. Adoptive transfer of small numbers of gamma delta T cells from ovalbumin (OVA)-tolerant mice selectively suppressed TH2-dependent immunoglobulin E (IgE) antibody production without affecting parallel IgG responses. Challenge of these gamma delta T cells in vitro with specific antigen resulted in production of high levels of interferon gamma. The effects of the gamma delta T cells may be mediated by direct inhibition of OVA-specific CD4+ TH2 cell proliferation or selection for specific CD4 TH2 cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McMenamin, C -- Pimm, C -- McKersey, M -- Holt, P G -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1869-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cell Biology, Institute for Child Health Research, West Perth, Western Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7916481" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/*immunology ; Dose-Response Relationship, Immunologic ; *Immune Tolerance ; Immunoglobulin E/*biosynthesis ; Immunoglobulin G/biosynthesis ; Immunotherapy, Adoptive ; Interferon-gamma/biosynthesis ; Interleukin-2/biosynthesis ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Ovalbumin/immunology ; Receptors, Antigen, T-Cell, gamma-delta/*immunology ; T-Lymphocyte Subsets/*immunology ; Transforming Growth Factor beta/biosynthesis
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  • 84
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-12-09
    Description: The nuclear magnetic resonance method of isotopic perturbation can distinguish between single- and double-well potentials in intramolecularly hydrogen-bonded monoanions of dicarboxylic acids. These are classic cases of a "strong," symmetric hydrogen bond in the crystal. The observed carbon-13 isotope shifts induced by the substitution of oxygen-18 demonstrate that these monoanions exist as a single symmetric structure in a nonpolar solvent but as two equilibrating tautomers in aqueous solution. The change is attributed to the disorder of the aqueous environment. These are simple counterexamples to the hope that the crystal structure reveals the actual molecular structure in aqueous solution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perrin, C L -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1665-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17775625" target="_blank"〉PubMed〈/a〉
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  • 85
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hellemans, A -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):974.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17779939" target="_blank"〉PubMed〈/a〉
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sigmund, K -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1900-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797230" target="_blank"〉PubMed〈/a〉
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  • 87
    Publication Date: 1994-06-03
    Description: Recent studies have implied that (Mg, Fe)SiO(3)-perovskite, a likely dominant mineral phase in the lower mantle, may have a high melting temperature. The implications of these findings for the dynamics of the lower mantle were investigated with the use of numerical convection models. The results showed that low homologous temperatures (0.3 to 0.5) would prevail in the modeled lower mantle, regardless of the effective Rayleigh number and internal heating rates. High-temperature ductile creep is possible under relatively cold conditions. In models with low rates of internal heating, local maxima of viscosity developed in the mid-lower mantle that were similar to those obtained from inversion of geoid, topography, and plate velocities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Keken, P E -- Yuen, D A -- van den Berg, A P -- New York, N.Y. -- Science. 1994 Jun 3;264(5164):1437-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17838427" target="_blank"〉PubMed〈/a〉
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-12-02
    Description: Investigation of tree growth in Isle Royale National Park in Michigan revealed the influence of herbivores and carnivores on plants in an intimately linked food chain. Plant growth rates were regulated by cycles in animal density and responded to annual changes in primary productivity only when released from herbivory by wolf predation. Isle Royale's dendrochronology complements a rich literature on food chain control in aquatic systems, which often supports a trophic cascade model. This study provides evidence of top-down control in a forested ecosystem.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McLaren, B E -- Peterson, R O -- New York, N.Y. -- Science. 1994 Dec 2;266(5190):1555-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17841718" target="_blank"〉PubMed〈/a〉
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  • 89
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-16
    Description: The organization of the hippocampus is generally thought of as a series of cell groups that form a unidirectionally excited chain, regulated by localized inhibitory circuits. With the use of in vivo intracellular labeling, histochemical, and extracellular tracing methods, a longitudinally widespread, inhibitory feedback in rat brain from the CA1 area to the CA3 and hilar regions was observed. This long-range, cross-regional inhibition may allow precise synchronization of population activity by timing the occurrence of action potentials in the principal cells and may contribute to the coordinated induction of synaptic plasticity in distributed networks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sik, A -- Ylinen, A -- Penttonen, M -- Buzsaki, G -- New York, N.Y. -- Science. 1994 Sep 16;265(5179):1722-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8085161" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/ultrastructure ; Dendrites/ultrastructure ; Feedback ; Hippocampus/cytology/*physiology ; Interneurons/*physiology/ultrastructure ; Membrane Potentials ; *Neural Inhibition ; Neural Pathways ; Pyramidal Cells/*physiology/ultrastructure ; Rats ; Synapses/ultrastructure
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-18
    Description: A diverse set of circadian clock mutants was isolated in a cyanobacterial strain that carries a bacterial luciferase reporter gene attached to a clock-controlled promoter. Among 150,000 clones of chemically mutagenized bioluminescent cells, 12 mutants were isolated that exhibit a broad spectrum of periods (between 16 and 60 hours), and 5 mutants were found that show a variety of unusual patterns, including arrhythmia. These mutations appear to be clock-specific. Moreover, it was demonstrated that in this cyanobacterium it is possible to clone mutant genes by complementation, which provides a means to genetically dissect the circadian mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kondo, T -- Tsinoremas, N F -- Golden, S S -- Johnson, C H -- Kutsuna, S -- Ishiura, M -- GM37040/GM/NIGMS NIH HHS/ -- MH43836/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1994 Nov 18;266(5188):1233-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute for Basic Biology, Okazaki, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973706" target="_blank"〉PubMed〈/a〉
    Keywords: Circadian Rhythm/*genetics ; Cloning, Molecular ; Cyanobacteria/*genetics/growth & development/physiology ; Darkness ; *Genes, Bacterial ; Genetic Complementation Test ; Light ; Luminescent Measurements ; Mutagenesis ; Mutation ; Temperature
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  • 91
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-06
    Description: Tube-like motion of a single, fluorescently labeled molecule of DNA in an entangled solution of unlabeled lambda-phage DNA molecules was observed by fluorescence microscopy. One end of a 16- to 100-micrometer-long DNA was attached to a 1-micrometer bead and moved with optical tweezers. The molecule was stretched into various conformations having bends, kinks, and loops. As the polymer relaxed, it closely followed a path defined by its initial contour. The relaxation time of the disturbance caused by the bead was roughly 1 second, whereas tube-like motion in small loops persisted for longer than 2 minutes. Tube deformation, constraint release, and excess chain segment diffusion were also observed. These observations provide direct evidence for several key assumptions in the reptation model developed by de Gennes, Edwards, and Doi.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perkins, T T -- Smith, D E -- Chu, S -- 33289/PHS HHS/ -- New York, N.Y. -- Science. 1994 May 6;264(5160):819-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8171335" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage lambda ; DNA, Viral/*chemistry ; Microscopy, Fluorescence ; *Nucleic Acid Conformation ; Solutions
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  • 92
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Silk, J -- New York, N.Y. -- Science. 1994 May 13;264(5161):999-1001.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17830097" target="_blank"〉PubMed〈/a〉
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 93
    Publication Date: 1994-09-02
    Description: As a step toward developing poliovirus as a vaccine vector, poliovirus recombinants were constructed by fusing exogenous peptides (up to 400 amino acids) and an artificial cleavage site for viral protease 3Cpro to the amino terminus of the viral polyprotein. Viral replication proceeded normally. An extended polyprotein was produced in infected cells and proteolytically processed into the complete array of viral proteins plus the foreign peptide, which was excluded from mature virions. The recombinants retained exogenous sequences through successive rounds of replication in culture and in vivo. Infection of animals with recombinants elicited a humoral immune response to the foreign peptides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andino, R -- Silvera, D -- Suggett, S D -- Achacoso, P L -- Miller, C J -- Baltimore, D -- Feinberg, M B -- AI22346/AI/NIAID NIH HHS/ -- AI35545/AI/NIAID NIH HHS/ -- RR00169/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1448-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California, San Francisco.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8073288" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Bacterial/biosynthesis ; Antibodies, Viral/biosynthesis ; Antigens, Bacterial/genetics/immunology ; Antigens, Viral/genetics/immunology ; Base Sequence ; Cloning, Molecular ; *Genetic Engineering ; Genetic Vectors ; HeLa Cells ; Humans ; Macaca fascicularis ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Poliovirus/*genetics/immunology/physiology ; Poliovirus Vaccine, Oral/*genetics ; *Protein Biosynthesis ; Proteins/metabolism ; Recombinant Proteins/biosynthesis/metabolism ; Vaccines, Synthetic/genetics/*immunology ; Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Sep 23;265(5180):1795.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17797206" target="_blank"〉PubMed〈/a〉
    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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  • 95
    Publication Date: 1994-07-22
    Description: Previously, a tissue-specific fate map was compiled for the gastrula stage of the zebrafish embryo, indicating that development subsequent to this stage follows a reproducible pattern. Here it is shown that each early zebrafish blastomere normally contributes to a subset of the gastrula and thus gives rise to a limited array of tissues. However, the final contribution that any early blastomere makes to the fate map in the gastrula cannot be predicted because of variability in both the position of the future dorsoventral axis with respect to the early cleavage blastomeres and the scattering of daughter cells as the gastrula is formed. Therefore, early cell divisions of the zebrafish embryo cannot reproducibly segregate determinants of tissue fates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helde, K A -- Wilson, E T -- Cretekos, C J -- Grunwald, D J -- New York, N.Y. -- Science. 1994 Jul 22;265(5171):517-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, Eccles Institute of Human Genetics, University of Utah, Salt Lake City 84112.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8036493" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastomeres/cytology ; Cell Division ; Gastrula/*cytology ; Zebrafish/*embryology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
    Publication Date: 1994-10-14
    Description: Schizophrenia is a complex illness characterized by multiple types of symptoms involving many aspects of cognition and emotion. Most efforts to identify its underlying neural substrates have focused on a strategy that relates a single symptom to a single brain region. An alternative hypothesis, that the variety of symptoms could be explained by a lesion in midline neural circuits mediating attention and information processing, is explored. Magnetic resonance images from patients and controls were transformed with a "bounding box" to produce an "average schizophrenic brain" and an "average normal brain." After image subtraction of the two averages, the areas of difference were displayed as an effect size map. Specific regional abnormalities were observed in the thalamus and adjacent white matter. An abnormality in the thalamus and related circuitry explains the diverse symptoms of schizophrenia parsimoniously because they could all result from a defect in filtering or gating sensory input, which is one of the primary functions of the thalamus in the human brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andreasen, N C -- Arndt, S -- Swayze, V 2nd -- Cizadlo, T -- Flaum, M -- O'Leary, D -- Ehrhardt, J C -- Yuh, W T -- MH31593/MH/NIMH NIH HHS/ -- MH40856/MH/NIMH NIH HHS/ -- MHCRC 43271/MH/NIMH NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):294-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mental Health Clinical Research Center, College of Medicine.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939669" target="_blank"〉PubMed〈/a〉
    Keywords: Brain/pathology ; Female ; Humans ; Image Processing, Computer-Assisted ; Magnetic Resonance Imaging/*methods ; Male ; Schizophrenia/*pathology ; Software ; Subtraction Technique ; Thalamus/*pathology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-04-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Apr 1;264(5155):117.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17778146" target="_blank"〉PubMed〈/a〉
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-11-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vaupel, J W -- Johnson, T E -- Lithgow, G J -- P01-AG08761/AG/NIA NIH HHS/ -- R01-AG08332/AG/NIA NIH HHS/ -- R01-AG10248/AG/NIA NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):826; author reply 828.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973641" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Caenorhabditis elegans/genetics/*physiology ; Genotype ; Longevity ; Mortality
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 1994-04-08
    Description: The movement of chromosomes that precedes meiosis was observed in living cells of fission yeast by fluorescence microscopy. Further analysis by in situ hybridization revealed that the telomeres remain clustered at the leading end of premeiotic chromosome movement, unlike mitotic chromosome movement in which the centromere leads. Once meiotic chromosome segregation starts, however, centromeres resume the leading position in chromosome movement, as they do in mitosis. Although the movement of the telomere first has not been observed before, the clustering of telomeres is reminiscent of the bouquet structure of meiotic-prophase chromosomes observed in higher eukaryotes, which suggests that telomeres perform specific functions required for premeiotic chromosomal events generally in eukaryotes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chikashige, Y -- Ding, D Q -- Funabiki, H -- Haraguchi, T -- Mashiko, S -- Yanagida, M -- Hiraoka, Y -- New York, N.Y. -- Science. 1994 Apr 8;264(5156):270-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Kansai Advanced Research Center, Communications Research Laboratory, Kobe, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8146661" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Nucleus/ultrastructure ; Centromere/physiology/ultrastructure ; Chromosomes, Fungal/*physiology/ultrastructure ; DNA Probes ; DNA, Fungal/analysis ; In Situ Hybridization, Fluorescence ; *Meiosis ; Microscopy, Fluorescence ; Schizosaccharomyces/*cytology/ultrastructure ; Telomere/*physiology/ultrastructure
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-05-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koppes, C R -- New York, N.Y. -- Science. 1994 May 13;264(5161):996-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17830095" target="_blank"〉PubMed〈/a〉
    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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