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  • United States  (930)
  • Amino Acid Sequence  (771)
  • American Association for the Advancement of Science (AAAS)  (1,698)
  • Academic Press
  • American Association of Petroleum Geologists (AAPG)
  • Bonn: Institute of Labor Economics (IZA)
  • 1990-1994  (1,698)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (1,698)
  • Academic Press
  • American Association of Petroleum Geologists (AAPG)
  • Bonn: Institute of Labor Economics (IZA)
  • Springer  (5)
Years
Year
  • 1
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    Premature p34cdc2 activation required for apoptosis (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Panel backs pregnant women in trials (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Send in the clones (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Measuring what works in health care (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Microtubule severing by elongation factor 1 alpha (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    NIH drops bid for gene patents (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    U.S.-Japan collaboration. Academic biotech deals offer more promise than product (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Functional consequences of posttranslational isomerization of Ser46 in a calcium channel toxin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 9
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    Regulatory T cell clones induced by oral tolerance: suppression of autoimmune encephalomyelitis (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 10
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    Engineering poliovirus as a vaccine vector for the expression of diverse antigens (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    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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  • 11
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    Drosophila TAFII150: similarity to yeast gene TSM-1 and specific binding to core promoter DNA (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-13
    Description: In Drosophila and human cells, the TATA binding protein (TBP) of the transcription factor IID (TFIID) complex is tightly associated with multiple subunits termed TBP-associated factors (TAFs) that are essential for mediating regulation of RNA polymerase II transcription. The Drosophila TAFII150 has now been molecularly cloned and biochemically characterized. The deduced primary amino acid sequence of dTAFII150 reveals a striking similarity to the essential yeast gene, TSM-1. Furthermore, like dTAFII150, the TSM-1 protein is found associated with the TBP in vivo, thus identifying the first yeast homolog of a TAF associated with TFIID. Both the product of TSM-1 and dTAFII150 bind directly to TBP and dTAFII250, demonstrating a functional similarity between human and yeast TAFs. Surprisingly, DNA binding studies indicate that purified recombinant dTAFII150 binds specifically to DNA sequences overlapping the start site of transcription. The data demonstrate that at least one of the TAFs is a sequence-specific DNA binding protein and that dTAFII150 together with TBP are responsible for TFIID interactions with an extended region of the core promoter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Verrijzer, C P -- Yokomori, K -- Chen, J L -- Tjian, R -- New York, N.Y. -- Science. 1994 May 13;264(5161):933-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, Berkeley 94720-3202.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8178153" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; DNA/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Drosophila ; *Drosophila Proteins ; Genes, Fungal ; Genes, Insect ; Histone Acetyltransferases ; Humans ; Molecular Sequence Data ; Nuclear Proteins/metabolism ; *Promoter Regions, Genetic ; RNA Polymerase II/metabolism ; Recombinant Proteins/metabolism ; Saccharomyces cerevisiae/genetics ; *Saccharomyces cerevisiae Proteins ; Sequence Alignment ; TATA Box ; *TATA-Binding Protein Associated Factors ; TATA-Box Binding Protein ; Transcription Factor TFIID ; Transcription Factors/chemistry/genetics/*metabolism
    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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  • 12
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    The aftermath of the Gallo case (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):20-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8272861" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research ; Federal Government ; *Government Regulation ; *Scientific Misconduct ; United States ; *United States Office of Research Integrity
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 13
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    NIH research collaboration (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGarey, B M -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):955.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973673" target="_blank"〉PubMed〈/a〉
    Keywords: *Industry ; *National Institutes of Health (U.S.) ; *Research ; United States ; *Universities
    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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  • 14
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    Sources of dioxin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fink, L E -- New York, N.Y. -- Science. 1994 Oct 21;266(5184):350; author reply 350-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7802836" target="_blank"〉PubMed〈/a〉
    Keywords: *Chlorine ; *Environmental Pollutants ; *Hazardous Substances ; Hazardous Waste ; Humans ; Hydrocarbons, Chlorinated ; Risk Assessment ; United States ; United States Environmental Protection Agency
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Identification of herpesvirus-like DNA sequences in AIDS-associated Kaposi's sarcoma (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: Representational difference analysis was used to isolate unique sequences present in more than 90 percent of Kaposi's sarcoma (KS) tissues obtained from patients with acquired immunodeficiency syndrome (AIDS). These sequences were not present in tissue DNA from non-AIDS patients, but were present in 15 percent of non-KS tissue DNA samples from AIDS patients. The sequences are homologous to, but distinct from, capsid and tegument protein genes of the Gammaherpesvirinae, herpesvirus saimiri and Epstein-Barr virus. These KS-associated herpesvirus-like (KSHV) sequences appear to define a new human herpesvirus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, Y -- Cesarman, E -- Pessin, M S -- Lee, F -- Culpepper, J -- Knowles, D M -- Moore, P S -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1865-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, College of Physicians and Surgeons, Columbia University, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997879" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*complications ; Amino Acid Sequence ; Base Composition ; Base Sequence ; Blotting, Southern ; Cloning, Molecular ; DNA, Viral/*analysis/chemistry/genetics ; Female ; Herpesviridae/*genetics ; Herpesvirus 2, Saimiriine/genetics ; Herpesvirus 4, Human/genetics ; Humans ; Male ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Open Reading Frames ; Polymerase Chain Reaction ; Retrospective Studies ; Sarcoma, Kaposi/etiology/*virology ; Sequence Homology, Amino Acid
    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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  • 16
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    Role of TCR zeta chain in T cell development and selection (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-11
    Description: Signals mediated by the T cell receptor (TCR) are required for thymocyte maturation and selection. To examine the role of TCR zeta chain signals in development, TCR expression was restored in zeta-deficient mice with transgenic zeta chains that partially or completely lacked sequences required for signal transduction. The zeta chain played a role in thymic development by promoting TCR surface expression, but zeta-mediated signals were not essential because TCRs that contained signaling-deficient zeta chains promoted T cell maturation and transduced signals associated with thymic selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shores, E W -- Huang, K -- Tran, T -- Lee, E -- Grinberg, A -- Love, P E -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):1047-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematologic Products, Food and Drug Administration, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7526464" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/analysis/genetics ; Antigens, CD4/analysis ; Antigens, CD5 ; Antigens, CD8/analysis ; Antigens, Differentiation, T-Lymphocyte/analysis ; *DNA-Binding Proteins ; Down-Regulation ; Gene Expression ; *Homeodomain Proteins ; Lectins, C-Type ; Lymph Nodes/immunology ; Membrane Proteins/genetics/*physiology ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Proteins/genetics ; RNA, Messenger/genetics/metabolism ; Receptors, Antigen, T-Cell/genetics/*physiology ; Signal Transduction ; T-Lymphocytes/cytology/*immunology ; Thymus Gland/immunology
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    Easy-to-alter digital images raise fears of tampering (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Jan 21;263(5145):317-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8278802" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Image Enhancement/*standards ; Image Processing, Computer-Assisted/*standards ; National Library of Medicine (U.S.) ; Periodicals as Topic ; Photography ; Publishing/*standards ; Scientific Misconduct ; United States ; United States Food and Drug Administration
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  • 18
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    National Institutes of Health. Panel proposes guidelines for industry (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, C -- New York, N.Y. -- Science. 1994 Feb 4;263(5147):603.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303264" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomedical Research ; Biotechnology/standards ; Federal Government ; *Government Regulation ; *Guidelines as Topic ; Industry/*standards ; Information Dissemination ; *National Institutes of Health (U.S.) ; *Research ; United States
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  • 19
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    New challenges in biomaterials (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-25
    Description: Significant opportunities and challenges exist in the creation and characterization of biomaterials. Materials have been designed for contact with blood, as replacements for soft and hard tissues, as adhesives, and as dental materials. Current methods of synthesis and characterization of these materials are outlined. Approaches for controlling the interface between tissue and biomaterials and ways in which the engineered materials may contribute to medicine are considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peppas, N A -- Langer, R -- GM25810/GM/NIGMS NIH HHS/ -- GM43337/GM/NIGMS NIH HHS/ -- GM45027/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Mar 25;263(5154):1715-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-1283.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8134835" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Biocompatible Materials/chemical synthesis/chemistry ; Dental Materials ; Drug Carriers ; Humans ; Materials Testing ; Molecular Sequence Data ; Prostheses and Implants ; Protein Engineering
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  • 20
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    Embryo research guidelines (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Varmus, H -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1345.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8073266" target="_blank"〉PubMed〈/a〉
    Keywords: *Embryo, Mammalian ; *Guidelines as Topic ; Humans ; National Institutes of Health (U.S.) ; *Research ; United States
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  • 21
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    NIH R&D priorities (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Varmus, H -- New York, N.Y. -- Science. 1994 Jun 17;264(5166):1649.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8209238" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Financing, Government ; National Institutes of Health (U.S.)/*economics ; Research ; *Research Support as Topic ; United States
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  • 22
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    Protection from Fas-mediated apoptosis by a soluble form of the Fas molecule (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-25
    Description: Fas is an apoptosis-signaling receptor molecule on the surface of a number of cell types. Molecular cloning and nucleotide sequence analysis revealed a human Fas messenger RNA variant capable of encoding a soluble Fas molecule lacking the transmembrane domain because of the deletion of an exon encoding this region. The expression of soluble Fas was confirmed by flow cytometry and immunocytochemical analysis. Supernatants from cells transfected with the variant messenger RNA blocked apoptosis induced by the antibody to Fas. Levels of soluble Fas were elevated in patients with systemic lupus erythematosus, and mice injected with soluble Fas displayed autoimmune features.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheng, J -- Zhou, T -- Liu, C -- Shapiro, J P -- Brauer, M J -- Kiefer, M C -- Barr, P J -- Mountz, J D -- P01 AR03555/AR/NIAMS NIH HHS/ -- P50 AI23694/AI/NIAID NIH HHS/ -- P60 AR20614/AR/NIAMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Mar 25;263(5154):1759-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Alabama at Birmingham.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7510905" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies/immunology ; Antigens, CD95 ; Antigens, Surface/chemistry/genetics/immunology/*physiology ; *Apoptosis ; Arthritis, Rheumatoid/blood ; Base Sequence ; Cell Line ; Cell Membrane/chemistry ; Humans ; Lupus Erythematosus, Systemic/blood ; Mice ; Molecular Sequence Data ; RNA, Messenger/genetics ; Solubility ; T-Lymphocyte Subsets/immunology ; Transfection
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  • 23
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    Radon risk estimates (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiu, N -- Barry, T -- Puskin, J -- Nelson, N -- New York, N.Y. -- Science. 1994 May 27;264(5163):1239-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8191276" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Neoplasms, Radiation-Induced/*etiology ; Radon/*adverse effects ; Risk Factors ; United States ; United States Environmental Protection Agency ; Water Pollutants, Radioactive/*adverse effects ; *Water Supply
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  • 24
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    Activation of phosphatidylinositol-3' kinase by Src-family kinase SH3 binding to the p85 subunit (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-18
    Description: Engagement of antigen receptor complexes induces rapid activation of Src-family kinases and association with phosphatidylinositol-3' kinase (PI-3 kinase). Here it was found that the Src homology 3 (SH3) domain of Lyn and Fyn bound to a proline-rich region (residues 84 to 99) within the 85-kilodalton subunit (p85) of PI-3 kinase. The binding of SH3 to the purified kinase led to a five- to sevenfold increase in the specific activity of PI-3 kinase. Ligand-induced receptor stimulation activated PI-3 kinase, and this activation was blocked by a peptide containing residues 84 to 99 of p85. These data demonstrate a mechanism for PI-3 kinase activation and show that binding of SH3 domains to proline-rich target sequences can regulate enzymatic activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pleiman, C M -- Hertz, W M -- Cambier, J C -- A120519/PHS HHS/ -- A121768/PHS HHS/ -- A129903/PHS HHS/ -- New York, N.Y. -- Science. 1994 Mar 18;263(5153):1609-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO 80206.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128248" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/*enzymology ; Enzyme Activation ; Lymphocyte Activation ; Mice ; Molecular Sequence Data ; Peptide Fragments/pharmacology ; Phosphatidylinositol 3-Kinases ; Phosphotransferases (Alcohol Group Acceptor)/chemistry/*metabolism ; Proline/chemistry ; Protein-Tyrosine Kinases/chemistry/*metabolism ; Proto-Oncogene Proteins/chemistry/*metabolism ; Proto-Oncogene Proteins c-fyn ; *src-Family Kinases
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  • 25
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    Research in the service of jobs and health (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshland, D E Jr -- New York, N.Y. -- Science. 1994 May 13;264(5161):887.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8178141" target="_blank"〉PubMed〈/a〉
    Keywords: Employment ; *Health Care Reform ; *Research ; United States
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  • 26
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    Rules for alpha-helix termination by glycine (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-20
    Description: A predictive rule for protein folding is presented that involves two recurrent glycine-based motifs that cap the carboxyl termini of alpha helices. In proteins, helices that terminated in glycine residues were found predominantly in one of these two motifs. These glycine structures had a characteristic pattern of polar and apolar residues. Visual inspection of known helical sequences was sufficient to distinguish the two motifs from each other and from internal glycines that fail to terminate helices. These glycine motifs--in which the local sequence selects between available structures--represent an example of a stereochemical rule for protein folding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aurora, R -- Srinivasan, R -- Rose, G D -- GM 29458/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 May 20;264(5162):1126-30.〈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/8178170" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Glycine/*chemistry ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Oligopeptides/chemistry ; *Protein Folding ; *Protein Structure, Secondary
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    NSF gears up for a building boom (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, J -- New York, N.Y. -- Science. 1994 Sep 9;265(5178):1516-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8079162" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Facility Design and Construction/*economics ; Financing, Government ; Government Agencies/*economics ; Laboratories/*economics ; National Institutes of Health (U.S.)/*economics ; United States
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  • 28
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    Risk from low-dose exposures (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Portier, C J -- Lucier, G W -- Edler, L -- New York, N.Y. -- Science. 1994 Nov 18;266(5188):1141-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973685" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenicity Tests/*statistics & numerical data ; Carcinogens/*administration & dosage/toxicity ; DNA Damage ; Dose-Response Relationship, Drug ; Environmental Exposure ; Humans ; Neoplasms/*chemically induced ; Risk Assessment ; Tetrachlorodibenzodioxin/adverse effects ; United States ; United States Environmental Protection Agency
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  • 29
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    A receptor component of the chloroplast protein translocation machinery (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: The chloroplast outer envelope protein OEP86 functions as a receptor in precursor protein translocation into chloroplasts. Sequence analysis suggests that the precursor of OEP86 is directed to the chloroplast outer envelope by a cleavable, negatively charged, and unusually long amino-terminal peptide. This presequence is unlike other potential targeting signals and suggests the existence of another membrane insertion pathway. Insertion of precursor OEP86 required the hydrolysis of adenosine triphosphate and the existence of surface exposed chloroplast membrane components, and it was not competed by another precursor protein destined for the internal plastid compartments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hirsch, S -- Muckel, E -- Heemeyer, F -- von Heijne, G -- Soll, J -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):1989-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Botanisches Institut, Universitat Kiel, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801125" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Chloroplast Proteins ; Chloroplasts/*metabolism ; *GTP-Binding Proteins ; Hydrogen-Ion Concentration ; Intracellular Membranes/metabolism ; Molecular Sequence Data ; Molecular Weight ; Peas ; Plant Proteins/chemistry/*metabolism ; Protein Precursors/chemistry/*metabolism ; Protein Processing, Post-Translational ; Ribulose-Bisphosphate Carboxylase/metabolism
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  • 30
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    Structure of the allosteric regulatory enzyme of purine biosynthesis (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-03
    Description: Multi-wavelength anomalous diffraction (MAD) has been used to determine the structure of the regulatory enzyme of de novo synthesis of purine nucleotides, glutamine 5-phosphoribosyl-1-pyrophosphate (PRPP) amidotransferase, from Bacillus subtilis. This allosteric enzyme, a 200-kilodalton tetramer, is subject to end product regulation by purine nucleotides. The metalloenzyme from B. subtilis is a paradigm for the higher eukaryotic enzymes, which have been refractory to isolation in stable form. The two folding domains of the polypeptide are correlated with functional domains for glutamine binding and for transfer of ammonia to the substrate PRPP. Eight molecules of the feedback inhibitor adenosine monophosphate (AMP) are bound to the tetrameric enzyme in two types of binding sites: the PRPP catalytic site of each subunit and an unusual regulatory site that is immediately adjacent to each active site but is between subunits. An oxygen-sensitive [4Fe-4S] cluster in each subunit is proposed to regulate protein turnover in vivo and is distant from the catalytic site. Oxygen sensitivity of the cluster is diminished by AMP, which blocks a channel through the protein to the cluster. The structure is representative of both glutamine amidotransferases and phosphoribosyltransferases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, J L -- Zaluzec, E J -- Wery, J P -- Niu, L -- Switzer, R L -- Zalkin, H -- Satow, Y -- DK-42303/DK/NIDDK NIH HHS/ -- GM-24658/GM/NIGMS NIH HHS/ -- R37 DK042303/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1994 Jun 3;264(5164):1427-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Purdue University, West Lafayette, IN 47907.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8197456" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Monophosphate/metabolism ; Allosteric Regulation ; Amidophosphoribosyltransferase/*chemistry/metabolism ; Amino Acid Sequence ; Animals ; Bacillus subtilis/*enzymology ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Humans ; Models, Molecular ; Molecular Sequence Data ; Oxygen/pharmacology ; Protein Folding ; Protein Structure, Secondary ; Saccharomyces cerevisiae
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  • 31
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    Structure of the RGD protein decorsin: conserved motif and distinct function in leech proteins that affect blood clotting (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-24
    Description: The structure of the leech protein decorsin, a potent 39-residue antagonist of glycoprotein IIb-IIIa and inhibitor of platelet aggregation, was determined by nuclear magnetic resonance. In contrast to other disintegrins, the Arg-Gly-Asp (RGD)-containing region of decorsin is well defined. The three-dimensional structure of decorsin is similar to that of hirudin, an anticoagulant leech protein that potently inhibits thrombin. Amino acid sequence comparisons suggest that ornatin, another glycoprotein IIb-IIIa antagonist, and antistasin, a potent Factor Xa inhibitor and anticoagulant found in leeches, share the same structural motif. Although decorsin, hirudin, and antistasin all affect the blood clotting process and appear similar in structure, their mechanisms of action and epitopes important for binding to their respective targets are distinct.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krezel, A M -- Wagner, G -- Seymour-Ulmer, J -- Lazarus, R A -- New York, N.Y. -- Science. 1994 Jun 24;264(5167):1944-7.〈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/8009227" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Hirudins/chemistry ; Invertebrate Hormones/chemistry ; *Leeches ; Magnetic Resonance Spectroscopy ; Molecular Sequence Data ; Oligopeptides/chemistry ; Platelet Membrane Glycoproteins/*antagonists & inhibitors ; Protein Conformation ; Protein Structure, Secondary ; Proteins/*chemistry
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    Science education. National standards finally ready for public scrutiny (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992042" target="_blank"〉PubMed〈/a〉
    Keywords: Biology/education ; Education/*standards ; Educational Measurement ; Science/*education ; United States
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  • 33
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    U.S. research forum fails to find a common front (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, J -- New York, N.Y. -- Science. 1994 Feb 11;263(5148):752.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303289" target="_blank"〉PubMed〈/a〉
    Keywords: Financing, Government ; Government Agencies/economics ; National Institutes of Health (U.S.)/economics ; *Research Support as Topic ; Science ; United States
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  • 34
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    Cancer researcher returns grant (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1318.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973717" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Financing, Government ; *Genetic Engineering ; Humans ; National Institutes of Health (U.S.)/*economics ; Neoplasms/*genetics ; *Research Support as Topic ; United States
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    R&D budget: growth in hard times (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, J -- New York, N.Y. -- Science. 1994 Feb 11;263(5148):744-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303284" target="_blank"〉PubMed〈/a〉
    Keywords: *Budgets ; *Financing, Government ; Government Agencies/economics ; Human Genome Project/economics ; National Institutes of Health (U.S.)/*economics ; *Research Support as Topic ; United States
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  • 36
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    R&D budget: more wins than losses (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, J -- Anderson, C -- Marshall, E -- New York, N.Y. -- Science. 1994 Jan 14;263(5144):164-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8284665" target="_blank"〉PubMed〈/a〉
    Keywords: *Budgets ; Government Agencies/economics ; National Institutes of Health (U.S.)/*economics ; *Research Support as Topic ; United States
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    Fostering young investigators (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fochtmann, L J -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):953.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973669" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; National Institutes of Health (U.S.) ; *Research ; Research Personnel/*economics ; *Research Support as Topic ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 38
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    Bumps on the vaccine road (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1371-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8073270" target="_blank"〉PubMed〈/a〉
    Keywords: Centers for Disease Control and Prevention (U.S.) ; Drug Approval ; Drug Industry ; Humans ; Institute of Medicine (U.S.) ; National Institutes of Health (U.S.) ; *Research ; Research Support as Topic ; United States ; *Vaccines ; World Health Organization
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  • 39
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    Outcomes research (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wennberg, J E -- Barry, M J -- New York, N.Y. -- Science. 1994 May 6;264(5160):758-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7513442" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Male ; *Outcome Assessment (Health Care) ; Prostatectomy ; Prostatic Hyperplasia/surgery ; Randomized Controlled Trials as Topic ; United States ; United States Agency for Healthcare Research and Quality
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  • 40
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    Crystal structure of human protein tyrosine phosphatase 1B (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-11
    Description: Protein tyrosine phosphatases (PTPs) constitute a family of receptor-like and cytoplasmic signal transducing enzymes that catalyze the dephosphorylation of phosphotyrosine residues and are characterized by homologous catalytic domains. The crystal structure of a representative member of this family, the 37-kilodalton form (residues 1 to 321) of PTP1B, has been determined at 2.8 A resolution. The enzyme consists of a single domain with the catalytic site located at the base of a shallow cleft. The phosphate recognition site is created from a loop that is located at the amino-terminus of an alpha helix. This site is formed from an 11-residue sequence motif that is diagnostic of PTPs and the dual specificity phosphatases, and that contains the catalytically essential cysteine and arginine residues. The position of the invariant cysteine residue within the phosphate binding site is consistent with its role as a nucleophile in the catalytic reaction. The structure of PTP1B should serve as a model for other members of the PTP family and as a framework for understanding the mechanism of tyrosine dephosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barford, D -- Flint, A J -- Tonks, N K -- CA53840/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1397-404.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉W.M. Keck Structural Biology Laboratory, Cold Spring Harbor Laboratory, NY 11724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128219" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Humans ; Models, Molecular ; Molecular Sequence Data ; Phosphates/metabolism ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Tyrosine Phosphatases/*chemistry/isolation & purification/metabolism ; Substrate Specificity ; Tungsten Compounds/metabolism
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  • 41
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    Binding of 14-3-3 proteins to the protein kinase Raf and effects on its activation (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-16
    Description: To identify proteins that may participate in the activation of the protein kinase Raf, proteins that interact with Raf were selected in a two-hybrid screen. Two members of the 14-3-3 protein family were isolated that interacted with both the amino terminal regulatory regions of Raf and the kinase domain of Raf, but did not compete with the guanine nucleotide-binding protein Ras for binding to Raf. 14-3-3 proteins associated with Raf in mammalian cells and accompanied Raf to the membrane in the presence of activated Ras. In yeast cells expressing Raf and MEK, mammalian 14-3-3 beta or 14-3-3 zeta activated Raf to a similar extent as did expression of Ras. Therefore, 14-3-3 proteins may participate in or be required for the regulation of Raf function. These findings suggest a role for 14-3-3 proteins in Raf-mediated signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freed, E -- Symons, M -- Macdonald, S G -- McCormick, F -- Ruggieri, R -- New York, N.Y. -- Science. 1994 Sep 16;265(5179):1713-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Onyx Pharmaceuticals, Richmond, CA 94806-5206.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8085158" target="_blank"〉PubMed〈/a〉
    Keywords: 14-3-3 Proteins ; Amino Acid Sequence ; Animals ; Cell Line ; Cell Membrane/enzymology ; Cytosol/enzymology ; Enzyme Activation ; GTP-Binding Proteins/metabolism ; HeLa Cells ; Humans ; MAP Kinase Kinase 1 ; *Mitogen-Activated Protein Kinase Kinases ; Molecular Sequence Data ; Nerve Tissue Proteins/*metabolism ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Protein-Tyrosine Kinases/genetics/metabolism ; Proto-Oncogene Proteins/chemistry/*metabolism ; Proto-Oncogene Proteins c-raf ; Recombinant Proteins/metabolism ; Saccharomyces cerevisiae/genetics/growth & development ; Signal Transduction ; *Tyrosine 3-Monooxygenase ; Zinc Fingers
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    Genetic control of programmed cell death in Drosophila (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-29
    Description: A gene, reaper (rpr), that appears to play a central control function for the initiation of programmed cell death (apoptosis) in Drosophila was identified. Virtually all programmed cell death that normally occurs during Drosophila embryogenesis was blocked in embryos homozygous for a small deletion that includes the reaper gene. Mutant embryos contained many extra cells and failed to hatch, but many other aspects of development appeared quite normal. Deletions that include reaper also protected embryos from apoptosis caused by x-irradiation and developmental defects. However, high doses of x-rays induced some apoptosis in mutant embryos, and the resulting corpses were phagocytosed by macrophages. These data suggest that the basic cell death program is intact although it was not activated in mutant embryos. The DNA encompassed by the deletion was cloned and the reaper gene was identified on the basis of the ability of cloned DNA to restore apoptosis to cell death defective embryos in germ line transformation experiments. The reaper gene appears to encode a small peptide that shows no homology to known proteins, and reaper messenger RNA is expressed in cells destined to undergo apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉White, K -- Grether, M E -- Abrams, J M -- Young, L -- Farrell, K -- Steller, H -- 5 F32 NS08536/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1994 Apr 29;264(5159):677-83.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Brain and Cognitive Sciences, Cambridge, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8171319" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis/*genetics ; Base Sequence ; Cloning, Molecular ; DNA Primers ; Drosophila/cytology/embryology/*genetics ; *Drosophila Proteins ; Embryo, Nonmammalian/cytology ; *Genes, Insect ; Models, Genetic ; Molecular Sequence Data ; Mutation ; Nervous System/cytology ; Neurons/cytology ; Peptides/chemistry/*genetics/physiology
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    National Institutes of Health. Report calls for smaller clinical center (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1994 Mar 25;263(5154):1678.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8134829" target="_blank"〉PubMed〈/a〉
    Keywords: Hospital Bed Capacity ; *Hospitals, Federal ; *National Institutes of Health (U.S.) ; United States
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  • 44
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    New AIDS chief takes charge (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1364-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128215" target="_blank"〉PubMed〈/a〉
    Keywords: *Acquired Immunodeficiency Syndrome/history ; Financing, Government/history ; History, 20th Century ; Humans ; National Institutes of Health (U.S.)/economics/history/*organization & ; administration ; *Research/history ; Research Support as Topic/history ; United States
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    Court says no to copying articles (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, A -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1315.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973716" target="_blank"〉PubMed〈/a〉
    Keywords: Copyright/*legislation & jurisprudence ; United States
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  • 46
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    New fight over fetal tissue grafts (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1994 Feb 4;263(5147):600-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303261" target="_blank"〉PubMed〈/a〉
    Keywords: Clinical Trials as Topic ; Control Groups ; Double-Blind Method ; Federal Government ; *Fetal Research ; *Fetal Tissue Transplantation ; Financing, Government ; Humans ; National Institutes of Health (U.S.) ; Parkinson Disease/*surgery ; Peer Review, Research ; Research Subjects ; Research Support as Topic ; Risk Assessment ; United States
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  • 47
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    Diet and health: what should we eat? (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-22
    Description: Many recent studies have implicated dietary factors in the cause and prevention of important diseases, including cancer, coronary heart disease, birth defects, and cataracts. There is strong evidence that vegetables and fruits protect against these diseases; however, the active constituents are incompletely identified. Whether fat per se is a major cause of disease is a question still under debate, although saturated and partially hydrogenated fats probably increase the risk of coronary heart disease. One clear conclusion from existing epidemiologic evidence is that many individuals in the United States have suboptimal diets and that the potential for disease prevention by improved nutrition is substantial.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willett, W C -- New York, N.Y. -- Science. 1994 Apr 22;264(5158):532-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Nutrition, Harvard School of Public Health, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8160011" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Coronary Disease/etiology/prevention & control ; Dairy Products ; *Diet ; Dietary Carbohydrates/administration & dosage ; Dietary Fats/administration & dosage ; Dietary Proteins/administration & dosage ; Female ; Fruit ; Humans ; Male ; Neoplasms/etiology/prevention & control ; *Nutritional Physiological Phenomena ; *Preventive Medicine ; United States ; Vegetables
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    Biomedicine: Americans don't get it (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1994 Mar 4;263(5151):1225-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8122104" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Science Disciplines ; Data Collection ; Educational Status ; *Health Knowledge, Attitudes, Practice ; Humans ; United States
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  • 49
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    Model programs take aim at HIV rates in Indonesia (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stevens, J E -- New York, N.Y. -- Science. 1994 Apr 1;264(5155):24-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8140414" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/epidemiology/*prevention & control ; Female ; Government Agencies ; Health Education ; Health Knowledge, Attitudes, Practice ; *Health Promotion ; Humans ; Indonesia/epidemiology ; Male ; United States ; World Health Organization
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  • 50
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    Environmental estrogens (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolff, M S -- Landrigan, P J -- New York, N.Y. -- Science. 1994 Oct 28;266(5185):526-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7818673" target="_blank"〉PubMed〈/a〉
    Keywords: Body Burden ; Breast Neoplasms/*chemically induced/epidemiology ; DDT/*adverse effects ; Dichlorodiphenyl Dichloroethylene/analysis ; Environmental Exposure/adverse effects ; Environmental Pollutants/*adverse effects ; Female ; Humans ; Pesticide Residues/analysis ; United States
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  • 51
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    Targeting of G alpha i2 to the Golgi by alternative spliced carboxyl-terminal region (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-07
    Description: Heterotrimeric guanosine triphosphate (GTP)-binding proteins (G proteins) may participate in membrane traffic events. A complementary DNA (cDNA) was isolated from a mouse pituitary cDNA library that corresponded to an alternatively spliced form of the gene encoding the G protein alpha subunit G alpha i2. The cDNA was identical to that encoding G alpha i2 except that the region encoding for the carboxyl-terminal 24 amino acids was replaced by a longer region encoding 35 amino acids that have no sequence similarity with G alpha i2 or other members of the G protein family. This alternative spliced product and the corresponding protein (sGi2) were present in several tissues. Specific antibodies revealed that sGi2 was localized in the Golgi apparatus, suggesting a role in membrane transport. Thus, alternative splicing may generate from a single gene two G protein alpha subunits with differential cellular localization and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Montmayeur, J P -- Borrelli, E -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):95-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Moleculaire des Eucaryotes, CNRS, INSERM U184, Faculte de Medecine, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8272874" target="_blank"〉PubMed〈/a〉
    Keywords: *Alternative Splicing ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cell Membrane/metabolism ; Coatomer Protein ; DNA, Complementary/genetics ; GTP-Binding Protein alpha Subunit, Gi2 ; *GTP-Binding Protein alpha Subunits, Gi-Go ; GTP-Binding Proteins/analysis/chemistry/genetics/*metabolism ; Golgi Apparatus/chemistry/*metabolism ; Mice ; Microtubule-Associated Proteins/analysis ; Molecular Sequence Data ; Oncogene Proteins/analysis/chemistry/genetics/*metabolism ; *Proto-Oncogene Proteins
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  • 52
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    Fostering young investigators (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lehrer, S -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):954.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973671" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; National Institutes of Health (U.S.)/*economics ; *Research Support as Topic ; United States
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  • 53
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    The Drosophila saxophone gene: a serine-threonine kinase receptor of the TGF-beta superfamily (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-25
    Description: The Drosophila decapentaplegic (dpp) gene encodes a transforming growth factor-beta (TGF-beta)-like protein that plays a key role in several aspects of development. Transduction of the DPP signal was investigated by cloning of serine-threonine kinase transmembrane receptors from Drosophila because this type of receptor is specific for the TGF-beta-like ligands. Here evidence is provided demonstrating that the Drosophila saxophone (sax) gene, a previously identified female sterile locus, encodes a TGF-beta-like type I receptor. Embryos from sax mothers and dpp embryos exhibit similar mutant phenotypes during early gastrulation, and these two loci exhibit genetic interactions, which suggest that they are utilized in the same pathway. These data suggest that sax encodes a receptor for dpp.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xie, T -- Finelli, A L -- Padgett, R W -- New York, N.Y. -- Science. 1994 Mar 25;263(5154):1756-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Waksman Institute, Rutgers University, Piscataway, NJ 08855-0759.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8134837" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; Drosophila/embryology/*genetics/metabolism ; *Drosophila Proteins ; Embryo, Nonmammalian/metabolism ; Female ; *Genes, Insect ; Insect Hormones/genetics/*metabolism ; Male ; Molecular Sequence Data ; Mutation ; Protein-Serine-Threonine Kinases/chemistry/*genetics/metabolism ; Receptors, Transforming Growth Factor beta/chemistry/*genetics/metabolism ; Signal Transduction ; Transforming Growth Factor beta/genetics/*metabolism
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    Arabidopsis ABA response gene ABI1: features of a calcium-modulated protein phosphatase (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-03
    Description: The Arabidopsis ABI1 locus is essential for a wide spectrum of abscisic acid (ABA) responses throughout plant development. Here, ABI1 was shown to regulate stomatal aperture in leaves and mitotic activity in root meristems. The ABI1 gene was cloned and predicted to encode a signaling protein. Although its carboxyl-terminal domain is related to serine-threonine phosphatase 2C, the ABI1 protein has a unique amino-terminal extension containing an EF hand calcium-binding site. These results suggest that the ABI1 protein is a Ca(2+)-modulated phosphatase and functions to integrate ABA and Ca2+ signals with phosphorylation-dependent response pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leung, J -- Bouvier-Durand, M -- Morris, P C -- Guerrier, D -- Chefdor, F -- Giraudat, J -- New York, N.Y. -- Science. 1994 Jun 3;264(5164):1448-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut des Sciences Vegetales, Centre National de la Recherche Scientifique UPR 40, Gif-sur-Yvette, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7910981" target="_blank"〉PubMed〈/a〉
    Keywords: Abscisic Acid/*pharmacology ; Amino Acid Sequence ; Arabidopsis/chemistry/cytology/*genetics/physiology ; *Arabidopsis Proteins ; Calcium/*metabolism ; Cloning, Molecular ; *Genes, Plant ; Mitosis ; Molecular Sequence Data ; Mutation ; Phenotype ; Phosphoprotein Phosphatases/chemistry/*genetics/*metabolism ; Phosphorylation ; Plants, Genetically Modified ; Polymorphism, Restriction Fragment Length ; Signal Transduction ; Transformation, Genetic
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    Regulation of MHC class I transport by the molecular chaperone, calnexin (p88, IP90) (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-21
    Description: Assembled class I histocompatibility molecules, consisting of heavy chain, beta 2-microglobulin, and peptide ligand, are transported rapidly to the cell surface. In contrast, the intracellular transport of free heavy chains or peptide-deficient heavy chain-beta 2-microglobulin heterodimers is impaired. A 90-kilodalton membrane-bound chaperone of the endoplasmic reticulum (ER), termed calnexin, associates quantitatively with newly synthesized class I heavy chains, but the functions of calnexin in this interaction are unknown. Class I subunits were expressed alone or in combination with calnexin in Drosophila melanogaster cells. Calnexin retarded the intracellular transport of both peptide-deficient heavy chain-beta 2-microglobulin heterodimers and free heavy chains. Calnexin also impeded the rapid intracellular degradation of free heavy chains. The ability of calnexin to protect and retain class I assembly intermediates is likely to contribute to the efficient intracellular formation of class I-peptide complexes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jackson, M R -- Cohen-Doyle, M F -- Peterson, P A -- Williams, D B -- New York, N.Y. -- Science. 1994 Jan 21;263(5145):384-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8278813" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Transport ; Calcium-Binding Proteins/*metabolism ; Calnexin ; Cell Line ; Drosophila melanogaster ; Endoplasmic Reticulum/*metabolism ; Golgi Apparatus/metabolism ; Histocompatibility Antigens Class I/*metabolism ; Membrane Proteins/*metabolism ; Molecular Sequence Data ; Temperature ; Transfection ; beta 2-Microglobulin/*metabolism
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    Sequential interactions of the TCR with two distinct cytoplasmic tyrosine kinases (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-25
    Description: The T cell antigen receptor (TCR) initiates signals by interacting with cytoplasmic protein tyrosine kinases (PTKs) through a 17-residue sequence motif [called the antigen recognition activation motif (ARAM)] that is contained in the TCR zeta and CD3 chains. TCR stimulation induces the tyrosine phosphorylation of several cellular substrates, including the ARAMs. Lck kinase activity is required for phosphorylation of two conserved tyrosine residues in an ARAM. This phosphorylation leads to the recruitment of a second cytoplasmic PTK, ZAP-70, through both of the ZAP-70 Src homology 2 domains and its phosphorylation. Thus, TCR signal transduction is initiated by the sequential interaction of two PTKs with TCR ARAMs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iwashima, M -- Irving, B A -- van Oers, N S -- Chan, A C -- Weiss, A -- AR-20684/AR/NIAMS NIH HHS/ -- GM39553/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1136-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7509083" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD8/metabolism ; Cell Line ; Cytoplasm/enzymology ; Haplorhini ; Humans ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Membrane Proteins/*metabolism ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Phosphotyrosine ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Signal Transduction ; Tumor Cells, Cultured ; Tyrosine/analogs & derivatives/metabolism ; ZAP-70 Protein-Tyrosine Kinase
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    A designed peptide ligase for total synthesis of ribonuclease A with unnatural catalytic residues (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-14
    Description: An engineered variant of subtilisin BPN', termed subtiligase, which efficiently ligates esterified peptides in aqueous solution, was used for the complete synthesis of ribonuclease (RNase) A that contains unnatural catalytic residues. Fully active RNase A (124 residues long) was produced in milligram quantities by stepwise ligation of six esterified peptide fragments (each 12 to 30 residues long) at yields averaging 70 percent per ligation. Variants of RNase A were produced in which the catalytic histidines at positions 12 and 119 were substituted with the unnatural amino acid 4-fluorohistidine, which has a pKa of 3.5 compared to 6.8 for histidine. Large changes in the profile of the pH as it affects rate occurred for the single and double mutants with surprisingly little change in the kcat for either the RNA cleavage or hydrolysis steps. The data indicate that these imidazoles function as general acids and bases, but that the proton transfer steps are not rate-limiting when the imidazoles are present in their correct protonation states. These studies indicate the potential of subtiligase for the blockwise synthesis of large proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jackson, D Y -- Burnier, J -- Quan, C -- Stanley, M -- Tom, J -- Wells, J A -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):243-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Protein Engineering, Genentech, Inc., South San Francisco, CA 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939659" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Esterification ; Histidine/analogs & derivatives/analysis ; Hydrogen-Ion Concentration ; Molecular Sequence Data ; Mutation ; Nucleotides, Cyclic/metabolism ; Protein Engineering/*methods ; Ribonuclease, Pancreatic/*chemical synthesis/chemistry/isolation & purification ; Subtilisins/chemistry/genetics/*metabolism ; Uridine Monophosphate/metabolism
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    Coding of hemolysins within the ribosomal RNA repeat on a plasmid in Entamoeba histolytica (1994)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1994-03-11
    Description: The pathogenesis of amoebic dysentery is a result of cytolysis of the colonic mucosa by the parasitic protozoan Entamoeba histolytica. The cytolysis results in extensive local ulceration and allows the amoeba to penetrate and metastasize to distant sites. Factors involved in this process were defined with three clones that express hemolytic activities in Escherichia coli. These potential amoebic virulence determinants were also toxic to human colonic epithelial cells, the primary cellular targets in amoebal invasion of the large intestine. The coding sequences for the hemolysins were close to each other on a 2.6-kilobase segment of a 25-kilobase extrachromosomal DNA element. The structural genes for the hemolysins were within inverted repeats that encode ribosomal RNAs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jansson, A -- Gillin, F -- Kagardt, U -- Hagblom, P -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1440-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Uppsala University, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128227" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Survival/drug effects ; Cloning, Molecular ; Entamoeba histolytica/*genetics/pathogenicity ; Escherichia coli/genetics ; *Genes, Protozoan ; Hemolysin Proteins/*genetics/toxicity ; Molecular Sequence Data ; Open Reading Frames ; *Plasmids ; RNA, Protozoan/genetics ; RNA, Ribosomal/*genetics ; Repetitive Sequences, Nucleic Acid ; Tumor Cells, Cultured ; Virulence
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    Transcriptional activation modulated by homopolymeric glutamine and proline stretches (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-11
    Description: Many transcription factors contain proline- or glutamine-rich activation domains. Here it is shown that simple homopolymeric stretches of these amino acids can activate transcription when fused to the DNA binding domain of GAL4 factor. In vitro, activity increased with polymer length, whereas in cell transfection assays maximal activity was achieved by 10 to 30 glutamines or about 10 prolines. Similar results were obtained when glutamine stretches were placed within a [GAL4]-VP16 chimeric protein. Because these stretches are encoded by rapidly evolving triplet repeats (microsatellites), they may be the main cause for modulation of transcription factor activity and thus result in subtle or overt genomic effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gerber, H P -- Seipel, K -- Georgiev, O -- Hofferer, M -- Hug, M -- Rusconi, S -- Schaffner, W -- New York, N.Y. -- Science. 1994 Feb 11;263(5148):808-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Molekularbiologie II der Universitat Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303297" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Glutamine/*chemistry/pharmacology ; HeLa Cells ; Humans ; Molecular Sequence Data ; Peptides/*chemistry/pharmacology ; Recombinant Fusion Proteins/pharmacology ; Repetitive Sequences, Nucleic Acid ; Transcription Factors/*chemistry/pharmacology ; *Transcriptional Activation ; Transfection
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    Insertion of a coiled-coil peptide from influenza virus hemagglutinin into membranes (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-14
    Description: The trimeric protein hemagglutinin (HA) of the influenza viral envelope is essential for cell entry. To investigate the interaction of HA with membranes, two 40-residue, cysteine-substituted peptides comprising the loop region and the first part of the coiled-coil stem were synthesized and modified with a nitroxide spin label. Electron paramagnetic resonance analysis revealed that the peptide inserts reversibly into phospholipid vesicles under endosomal pH conditions. This result suggests that some or all of the long coiled-coil trimer of HA may insert into membranes, which could bring the viral and cell membranes closer together and facilitate fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, Y G -- King, D S -- Shin, Y K -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):274-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, Berkeley.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939662" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Electron Spin Resonance Spectroscopy ; Endocytosis ; Hemagglutinin Glycoproteins, Influenza Virus ; Hemagglutinins, Viral/chemistry/*metabolism ; Hydrogen-Ion Concentration ; Lipid Bilayers/*metabolism ; *Membrane Fusion ; Molecular Sequence Data ; Orthomyxoviridae/physiology ; Protein Conformation ; Protein Structure, Secondary ; Temperature ; Viral Envelope Proteins/chemistry/*metabolism
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    Feds drop Gallo criminal probe (1994)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1994-01-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Jan 28;263(5146):459.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8290947" target="_blank"〉PubMed〈/a〉
    Keywords: HIV/*isolation & purification ; History, 20th Century ; *Scientific Misconduct ; United States
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    Specification of C/EBP function during Drosophila development by the bZIP basic region (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: The biologically relevant interactions of a transcription factor are those that are important for function in the organism. Here, a transgenic rescue assay was used to determine which molecular functions of Drosophila CCAAT/enhancer binding protein (C/EBP), a basic region-leucine zipper transcription factor, are required for it to fulfill its essential role during development. Chimeric proteins that contain the Drosophila C/EBP (DmC/EBP) basic region, a heterologous zipper, and a heterologous activation domain could functionally substitute for DmC/EBP. Mammalian C/EBPs were also functional in Drosophila. In contrast, 9 of 25 single amino acid substitutions in the basic region disrupted biological function. Thus, the conserved basic region specifies DmC/EBP activity in the organism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rorth, P -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1878-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Embryology, Carnegie Institution of Washington, Baltimore, MD 21210.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997882" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Base Sequence ; Basic-Leucine Zipper Transcription Factors ; CCAAT-Enhancer-Binding Proteins ; DNA/metabolism ; DNA-Binding Proteins/chemistry/genetics/*physiology ; Drosophila/genetics/*growth & development ; Female ; G-Box Binding Factors ; *Leucine Zippers ; Male ; Molecular Sequence Data ; Nuclear Proteins/chemistry/genetics/*physiology ; Recombinant Fusion Proteins ; Transcription Factors/chemistry/genetics/*physiology ; Transcriptional Activation
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    Fusion of a kinase gene, ALK, to a nucleolar protein gene, NPM, in non-Hodgkin's lymphoma (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-04
    Description: The 2;5 chromosomal translocation occurs in most anaplastic large-cell non-Hodgkin's lymphomas arising from activated T lymphocytes. This rearrangement was shown to fuse the NPM nucleolar phosphoprotein gene on chromosome 5q35 to a previously unidentified protein tyrosine kinase gene, ALK, on chromosome 2p23. In the predicted hybrid protein, the amino terminus of nucleophosmin (NPM) is linked to the catalytic domain of anaplastic lymphoma kinase (ALK). Expressed in the small intestine, testis, and brain but not in normal lymphoid cells, ALK shows greatest sequence similarity to the insulin receptor subfamily of kinases. Unscheduled expression of the truncated ALK may contribute to malignant transformation in these lymphomas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morris, S W -- Kirstein, M N -- Valentine, M B -- Dittmer, K G -- Shapiro, D N -- Saltman, D L -- Look, A T -- CA 21765/CA/NCI NIH HHS/ -- KO8 CA 01702/CA/NCI NIH HHS/ -- P01 CA 20180/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Mar 4;263(5151):1281-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Experimental Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8122112" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Brain/enzymology ; Cell Transformation, Neoplastic ; Chromosome Walking ; Chromosomes, Human, Pair 2 ; Chromosomes, Human, Pair 5 ; Cloning, Molecular ; Gene Expression Regulation, Neoplastic ; Humans ; Intestine, Small/enzymology ; Lymphoma, Large-Cell, Anaplastic/chemistry/enzymology/*genetics ; Male ; Molecular Sequence Data ; Nuclear Proteins/chemistry/*genetics ; Phosphoproteins/chemistry/*genetics ; Promoter Regions, Genetic ; Protein-Tyrosine Kinases/chemistry/*genetics ; RNA, Messenger/genetics/metabolism ; Receptor Protein-Tyrosine Kinases ; Sequence Alignment ; Signal Transduction ; Testis/enzymology ; *Translocation, Genetic ; Tumor Cells, Cultured
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    Two identical noninteracting sites in an ion channel revealed by proton transfer (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-23
    Description: The functional consequences of single proton transfers occurring in the pore of a cyclic nucleotide-gated channel were observed with patch recording techniques. These results led to three conclusions about the chemical nature of ion binding sites in the conduction pathway: The channel contains two identical titratable sites, even though there are more than two (probably four) identical subunits; the sites are formed by glutamate residues that have a pKa (where K(a) is the acid constant) of 7.6; and protonation of one site does not perturb the pKa of the other. These properties point to an unusual arrangement of carboxyl side-chain residues in the pore of a cation channel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Root, M J -- MacKinnon, R -- 5 T32 GM083113/GM/NIGMS NIH HHS/ -- GM47400/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1852-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7522344" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Calcium Channels/metabolism ; Catfishes ; Electric Conductivity ; Hydrogen-Ion Concentration ; Ion Channel Gating ; Ion Channels/chemistry/genetics/*metabolism ; Kinetics ; Molecular Sequence Data ; Mutation ; *Protons ; Sodium/metabolism ; Xenopus
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    Children's vaccine initiative stumbles (1994)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1994-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1376-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8073274" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; *Child Welfare ; Child, Preschool ; *Developing Countries ; *Global Health ; Humans ; *Immunization Programs ; Infant ; Research ; United Nations ; United States ; *Vaccines, Combined
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    A lymphotoxin-beta-specific receptor (1994)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1994-04-29
    Description: Tumor necrosis factor (TNF) and lymphotoxin-alpha (LT-alpha) are members of a family of secreted and cell surface cytokines that participate in the regulation of immune and inflammatory responses. The cell surface form of LT-alpha is assembled during biosynthesis as a heteromeric complex with lymphotoxin-beta (LT-beta), a type II transmembrane protein that is another member of the TNF ligand family. Secreted LT-alpha is a homotrimer that binds to distinct TNF receptors of 60 and 80 kilodaltons; however, these receptors do not recognize the major cell surface LT-alpha-LT-beta complex. A receptor specific for human LT-beta was identified, which suggests that cell surface LT may have functions that are distinct from those of secreted LT-alpha.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crowe, P D -- VanArsdale, T L -- Walter, B N -- Ware, C F -- Hession, C -- Ehrenfels, B -- Browning, J L -- Din, W S -- Goodwin, R G -- Smith, C A -- New York, N.Y. -- Science. 1994 Apr 29;264(5159):707-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biomedical Sciences, University of California, Riverside 92521.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8171323" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites ; Cysteine/chemistry ; Humans ; Hybridomas ; Ligands ; Lymphotoxin beta Receptor ; Lymphotoxin-alpha/*metabolism ; Molecular Sequence Data ; Receptors, Tumor Necrosis Factor/chemistry/*metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/immunology ; Tetradecanoylphorbol Acetate/pharmacology ; Tumor Necrosis Factor-alpha/*metabolism
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    NIH AIDS office clings to power (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Jul 1;265(5168):19.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8016649" target="_blank"〉PubMed〈/a〉
    Keywords: *Acquired Immunodeficiency Syndrome ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; *Research ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Requirement for the yeast gene LON in intramitochondrial proteolysis and maintenance of respiration (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-08
    Description: The role of protein degradation in mitochondrial homeostasis was explored by cloning of a gene from Saccharomyces cerevisiae that encodes a protein resembling the adenosine triphosphate (ATP)-dependent bacterial protease Lon. The predicted yeast protein has a typical mitochondrial matrix-targeting sequence at its amino terminus. Yeast cells lacking a functional LON gene contained a nonfunctional mitochondrial genome, were respiratory-deficient, and lacked an ATP-dependent proteolytic activity present in the mitochondria of Lon+ cells. Lon- cells were also impaired in their ability to catalyze the energy-dependent degradation of several mitochondrial matrix proteins and they accumulated electron-dense inclusions in their mitochondrial matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suzuki, C K -- Suda, K -- Wang, N -- Schatz, G -- New York, N.Y. -- Science. 1994 Apr 8;264(5156):273-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biozentrum der Universitat Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8146662" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Dependent Proteases ; Adenosine Triphosphatases/genetics/metabolism ; Amino Acid Sequence ; Base Sequence ; Cloning, Molecular ; Fungal Proteins/metabolism ; *Genes, Fungal ; Heat-Shock Proteins/*genetics/metabolism ; Microscopy, Electron ; Mitochondria/*metabolism/ultrastructure ; Molecular Sequence Data ; *Oxygen Consumption ; Saccharomyces cerevisiae/*genetics/metabolism ; Serine Endopeptidases/*genetics/metabolism
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    Control of kinetic properties of AMPA receptor channels by nuclear RNA editing (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor channels mediate the fast component of excitatory postsynaptic currents in the central nervous system. Site-selective nuclear RNA editing controls the calcium permeability of these channels, and RNA editing at a second site is shown here to affect the kinetic aspects of these channels in rat brain. In three of the four AMPA receptor subunits (GluR-B, -C, and -D), intronic elements determine a codon switch (AGA, arginine, to GGA, glycine) in the primary transcripts in a position termed the R/G site, which immediately precedes the alternatively spliced modules "flip" and "flop." The extent of editing at this site progresses with brain development in a manner specific for subunit and splice form, and edited channels possess faster recovery rates from desensitization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lomeli, H -- Mosbacher, J -- Melcher, T -- Hoger, T -- Geiger, J R -- Kuner, T -- Monyer, H -- Higuchi, M -- Bach, A -- Seeburg, P H -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1709-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neuroendocrinology, University of Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992055" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; Base Sequence ; Brain/embryology/*metabolism ; Cell Nucleus/metabolism ; Exons ; Glutamic Acid/pharmacology ; Glycine/genetics ; Introns ; Kinetics ; Membrane Potentials ; Molecular Sequence Data ; Oocytes ; PC12 Cells ; Patch-Clamp Techniques ; *RNA Editing ; Rats ; Rats, Wistar ; Receptors, AMPA/*genetics/*metabolism ; Recombinant Proteins/metabolism ; Xenopus
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    Plague vaccine "regulations": ensuring quality (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zoon, K C -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1626.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992037" target="_blank"〉PubMed〈/a〉
    Keywords: Drug Industry ; Government Agencies ; Humans ; Military Personnel ; Plague/*prevention & control ; Plague Vaccine/*standards ; United States ; United States Food and Drug Administration
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    ORI and misconduct investigations (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bivens, L W -- New York, N.Y. -- Science. 1994 Feb 4;263(5147):593.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8303258" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomedical Research ; Federal Government ; *Government Regulation ; *Scientific Misconduct ; United States ; *United States Office of Research Integrity
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    Isolation of the tomato Cf-9 gene for resistance to Cladosporium fulvum by transposon tagging (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-04
    Description: The tomato Cf-9 gene confers resistance to infection by races of the fungus Cladosporium fulvum that carry the avirulence gene Avr9. The Cf-9 gene was isolated by transposon tagging with the maize transposable element Dissociation. The DNA sequence of Cf-9 encodes a putative membrane-anchored extracytoplasmic glycoprotein. The predicted protein shows homology to the receptor domain of several receptor-like protein kinases in Arabidopsis, to antifungal polygalacturonase-inhibiting proteins in plants, and to other members of the leucine-rich repeat family of proteins. This structure is consistent with that of a receptor that could bind Avr9 peptide and activate plant defense.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, D A -- Thomas, C M -- Hammond-Kosack, K E -- Balint-Kurti, P J -- Jones, J D -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):789-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973631" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cladosporium/genetics/*physiology ; Consensus Sequence ; DNA Primers ; *DNA Transposable Elements ; Fungal Proteins/genetics ; Gene Targeting ; *Genes, Plant ; Glycoproteins/chemistry/*genetics ; Glycosylation ; Lycopersicon esculentum/chemistry/*genetics/microbiology ; Membrane Glycoproteins/chemistry/*genetics ; Molecular Sequence Data ; Multigene Family ; Nucleic Acid Hybridization ; Plant Proteins/chemistry/*genetics ; Plants, Genetically Modified ; Polymerase Chain Reaction ; Sequence Alignment
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    Association of intestinal peptide transport with a protein related to the cadherin superfamily (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-15
    Description: The first step in oral absorption of many medically important peptide-based drugs is mediated by an intestinal proton-dependent peptide transporter. This transporter facilitates the oral absorption of beta-lactam antibiotics and angiotensin-converting enzyme inhibitors from the intestine into enterocytes lining the luminal wall. A monoclonal antibody that blocked uptake of cephalexin was used to identify and clone a gene that encodes an approximately 92-kilodalton membrane protein that was associated with the acquisition of peptide transport activity by transport-deficient cells. The amino acid sequence deduced from the complementary DNA sequence of the cloned gene indicated that this transport-associated protein shares several conserved structural elements with the cadherin superfamily of calcium-dependent, cell-cell adhesion proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dantzig, A H -- Hoskins, J A -- Tabas, L B -- Bright, S -- Shepard, R L -- Jenkins, I L -- Duckworth, D C -- Sportsman, J R -- Mackensen, D -- Rosteck, P R Jr -- New York, N.Y. -- Science. 1994 Apr 15;264(5157):430-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8153632" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Transport ; CHO Cells ; Cadherins/*chemistry ; Carrier Proteins/*chemistry/genetics/isolation & purification/metabolism ; Cephalexin/*metabolism ; Cloning, Molecular ; Cricetinae ; Glycosylation ; Humans ; Hydrogen-Ion Concentration ; Intestinal Mucosa/*metabolism ; Leucine/analogs & derivatives/metabolism ; *Membrane Transport Proteins ; Mice ; Mice, Inbred A ; Molecular Sequence Data ; Open Reading Frames ; Sequence Homology, Amino Acid ; Transfection ; Tumor Cells, Cultured
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    Fas and perforin pathways as major mechanisms of T cell-mediated cytotoxicity (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-22
    Description: Two molecular mechanisms of T cell-mediated cytotoxicity, one perforin-based, the other Fas-based, have been demonstrated. To determine the extent of their contribution to T cell-mediated cytotoxicity, a range of effector cells from normal control or perforin-deficient mice were tested against a panel of target cells with various levels of Fas expression. All cytotoxicity observed was due to either of these mechanisms, and no third mechanism was detected. Thus, the perforin- and Fas-based mechanisms may account for all T cell-mediated cytotoxicity in short-term in vitro assays.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kagi, D -- Vignaux, F -- Ledermann, B -- Burki, K -- Depraetere, V -- Nagata, S -- Hengartner, H -- Golstein, P -- New York, N.Y. -- Science. 1994 Jul 22;265(5171):528-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7518614" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD95 ; Antigens, Surface/*immunology ; Cells, Cultured ; Concanavalin A/pharmacology ; *Cytotoxicity, Immunologic ; Ionomycin/pharmacology ; Leukemia L1210 ; Lymphocyte Culture Test, Mixed ; Lymphocytic choriomeningitis virus/immunology ; Membrane Glycoproteins/*immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Molecular Sequence Data ; Perforin ; Pore Forming Cytotoxic Proteins ; T-Lymphocytes, Cytotoxic/*immunology ; Tetradecanoylphorbol Acetate/pharmacology ; Tumor Cells, Cultured
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    Adequate supplies of fruits and vegetables (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abelson, P H -- New York, N.Y. -- Science. 1994 Nov 25;266(5189):1303.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973710" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenicity Tests ; Diet ; Female ; *Fruit ; *Fungicides, Industrial/toxicity ; Humans ; Male ; Mice ; United States ; United States Environmental Protection Agency ; *Vegetables
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    Diversity of endogenous epitopes bound to MHC class II molecules limited by invariant chain (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-04
    Description: The invariant chain (Ii) binds nascent major histocompatibility complex (MHC) class II molecules, blocking peptide binding until the complex dissociates in the endosomes. This may serve to differentiate the MHC class I and II antigen presentation pathways and enable class II molecules to efficiently bind peptides in the endosomes. This hypothesis was addressed by probing spleen cells from a combination of knock-out and transgenic mice with a large panel of T cell hybridomas. The Ii molecule blocked the presentation of a range of endogenously synthesized epitopes, but some epitopes actually required Ii. Thus, the influence of Ii on presentation does not follow simple rules. In addition, mice expressing Ii were not tolerant to epitopes unmasked in its absence, a finding with possible implications for autoimmunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bodmer, H -- Viville, S -- Benoist, C -- Mathis, D -- New York, N.Y. -- Science. 1994 Mar 4;263(5151):1284-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Moleculaire des Eucaryotes du CNRS, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7510069" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigen-Presenting Cells/*immunology ; *Antigens, Differentiation, B-Lymphocyte ; Epitopes/*immunology ; Histocompatibility Antigens Class II/genetics/*immunology ; Hybridomas ; Mice ; Mice, Knockout ; Mice, Transgenic ; Molecular Sequence Data ; Myelin Basic Protein/immunology ; Recombinant Fusion Proteins/immunology ; T-Lymphocytes/*immunology
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    The structural basis of sequence-independent peptide binding by OppA protein (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-10
    Description: Specific protein-ligand interactions are critical for cellular function, and most proteins select their partners with sharp discrimination. However, the oligopeptide-binding protein of Salmonella typhimurium (OppA) binds peptides of two to five amino acid residues without regard to sequence. The crystal structure of OppA reveals a three-domain organization, unlike other periplasmic binding proteins. In OppA-peptide complexes, the ligands are completely enclosed in the protein interior, a mode of binding that normally imposes tight specificity. The protein fulfills the hydrogen bonding and electrostatic potential of the ligand main chain and accommodates the peptide side chains in voluminous hydrated cavities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tame, J R -- Murshudov, G N -- Dodson, E J -- Neil, T K -- Dodson, G G -- Higgins, C F -- Wilkinson, A J -- New York, N.Y. -- Science. 1994 Jun 10;264(5165):1578-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of York, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8202710" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/chemistry/*metabolism ; Binding Sites ; Carrier Proteins/chemistry/*metabolism ; Crystallography, X-Ray ; Hydrogen Bonding ; Ligands ; Lipoproteins/chemistry/*metabolism ; Models, Molecular ; Molecular Sequence Data ; Molecular Weight ; Oligopeptides/chemistry/*metabolism ; Protein Conformation ; Protein Structure, Secondary
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    A National Institute for the Environment (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saundry, P D -- New York, N.Y. -- Science. 1994 Apr 8;264(5156):185.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8146642" target="_blank"〉PubMed〈/a〉
    Keywords: *Environment ; *Government Agencies ; National Institutes of Health (U.S.) ; United States
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    Jak-STAT pathways and transcriptional activation in response to IFNs and other extracellular signaling proteins (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-03
    Description: Through the study of transcriptional activation in response to interferon alpha (IFN-alpha) and interferon gamma (IFN-gamma), a previously unrecognized direct signal transduction pathway to the nucleus has been uncovered: IFN-receptor interaction at the cell surface leads to the activation of kinases of the Jak family that then phosphorylate substrate proteins called STATs (signal transducers and activators of transcription). The phosphorylated STAT proteins move to the nucleus, bind specific DNA elements, and direct transcription. Recognition of the molecules involved in the IFN-alpha and IFN-gamma pathway has led to discoveries that a number of STAT family members exist and that other polypeptide ligands also use the Jak-STAT molecules in signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Darnell, J E Jr -- Kerr, I M -- Stark, G R -- New York, N.Y. -- Science. 1994 Jun 3;264(5164):1415-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Cell Biology, Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8197455" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA-Binding Proteins/*metabolism ; Genes ; Genetic Complementation Test ; Humans ; Interferon-Stimulated Gene Factor 3 ; Interferon-Stimulated Gene Factor 3, gamma Subunit ; Interferon-alpha/*pharmacology ; Interferon-gamma/*pharmacology ; Molecular Sequence Data ; Mutation ; Protein-Tyrosine Kinases/metabolism ; Regulatory Sequences, Nucleic Acid ; *Signal Transduction ; Transcription Factors/*metabolism ; *Transcriptional Activation
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    AAAS sells on-line clinical journal (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 1994 Aug 12;265(5174):867.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8052842" target="_blank"〉PubMed〈/a〉
    Keywords: Clinical Trials as Topic ; Medlars ; *Online Systems ; *Periodicals as Topic ; *Publishing ; *Societies, Scientific ; United States
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    Digenic retinitis pigmentosa due to mutations at the unlinked peripherin/RDS and ROM1 loci (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-10
    Description: In spite of recent advances in identifying genes causing monogenic human disease, very little is known about the genes involved in polygenic disease. Three families were identified with mutations in the unlinked photoreceptor-specific genes ROM1 and peripherin/RDS, in which only double heterozygotes develop retinitis pigmentosa (RP). These findings indicate that the allelic and nonallelic heterogeneity known to be a feature of monogenic RP is complicated further by interactions between unlinked mutations causing digenic RP. Recognition of the inheritance pattern exemplified by these three families might facilitate the identification of other examples of digenic inheritance in human disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kajiwara, K -- Berson, E L -- Dryja, T P -- EY00169/EY/NEI NIH HHS/ -- EY08683/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1994 Jun 10;264(5165):1604-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Berman-Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston 02114.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8202715" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Base Sequence ; Electroretinography ; Eye Proteins/chemistry/*genetics ; Female ; Genes, Dominant ; Genes, Recessive ; Genetic Linkage ; Heterozygote ; Humans ; Intermediate Filament Proteins/chemistry/*genetics ; Male ; *Membrane Glycoproteins ; Membrane Proteins/chemistry/*genetics ; Molecular Sequence Data ; Mutation ; *Nerve Tissue Proteins ; Pedigree ; Peripherins ; Retinitis Pigmentosa/*genetics ; Rod Cell Outer Segment/chemistry ; Tetraspanins
    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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  • 82
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    Kinetics of molecular chaperone action (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-18
    Description: Molecular chaperones of the Hsp70 type transiently sequester unfolded segments of proteins and promote their correct folding. Target peptides were labeled with an environmentally sensitive fluorophore so that their binding to the molecular chaperone DnaK of Escherichia coli could be followed in real time. The two-step process was characterized by relaxation times of 27 seconds and 200 seconds with 2 microM DnaK and 0.1 microM ligand at 25 degrees C. In the presence of adenosine triphosphate, the formation of the complex was greatly accelerated and appeared to be a single-exponential process with a relaxation time of 0.4 second. The binding-release cycle of DnaK thus occurs in the time range of polypeptide chain elongation and folding and is too fast to be stoichiometrically coupled to the adenosine triphosphatase activity of the chaperone (turnover number, 0.13 per minute at 30 degrees C).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmid, D -- Baici, A -- Gehring, H -- Christen, P -- New York, N.Y. -- Science. 1994 Feb 18;263(5149):971-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biochemisches Institut, Universitat Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8310296" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Naphthylamine/analogs & derivatives ; Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/analogs & derivatives/pharmacology ; Amino Acid Sequence ; Aspartate Aminotransferases/metabolism ; Bacterial Proteins/*metabolism ; Binding Sites ; Enzyme Precursors/metabolism ; *Escherichia coli Proteins ; Fluorescent Dyes ; *HSP70 Heat-Shock Proteins ; Heat-Shock Proteins/*metabolism ; Kinetics ; Molecular Sequence Data ; Peptide Fragments/*metabolism
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  • 83
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    Science in the national interest (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abelson, P H -- New York, N.Y. -- Science. 1994 Feb 18;263(5149):899.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8310282" target="_blank"〉PubMed〈/a〉
    Keywords: Financing, Government ; Government Agencies/economics ; National Institutes of Health (U.S.)/economics ; *Research Support as Topic ; *Science ; United States
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  • 84
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    Gem: an induced, immediate early protein belonging to the Ras family (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-08
    Description: A gene encoding a 35-kilodalton guanosine triphosphate (GTP)-binding protein, Gem, was cloned from mitogen-induced human peripheral blood T cells. Gem and Rad, the product of a gene overexpressed in skeletal muscle in individuals with Type II diabetes, constitute a new family of Ras-related GTP-binding proteins. The distinct structural features of this family include the G3 GTP-binding motif, extensive amino- and carboxyl-terminal extensions beyond the Ras-related domain, and a motif that determines membrane association. Gem was transiently expressed in human peripheral blood T cells in response to mitogenic stimulation; the protein was phosphorylated on tyrosine residues and localized to the cytosolic face of the plasma membrane. Deregulated Gem expression prevented proliferation of normal and transformed 3T3 cells. These results suggest that Gem is a regulatory protein, possibly participating in receptor-mediated signal transduction at the plasma membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maguire, J -- Santoro, T -- Jensen, P -- Siebenlist, U -- Yewdell, J -- Kelly, K -- New York, N.Y. -- Science. 1994 Jul 8;265(5169):241-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7912851" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; CD4-Positive T-Lymphocytes/metabolism ; Cell Death ; Cell Division ; Cell Line ; Cell Line, Transformed ; Cell Membrane/metabolism ; GTP-Binding Proteins/chemistry/genetics/*metabolism ; Genes, ras ; Guanosine Triphosphate/metabolism ; Humans ; Immediate-Early Proteins/chemistry/genetics/*metabolism ; Mice ; Molecular Sequence Data ; *Monomeric GTP-Binding Proteins ; Mutation ; RNA, Messenger/genetics/metabolism ; Transfection ; *ras Proteins
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  • 85
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    Requirement of human renal water channel aquaporin-2 for vasopressin-dependent concentration of urine (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-01
    Description: Concentration of urine in mammals is regulated by the antidiuretic hormone vasopressin. Binding of vasopressin to its V2 receptor leads to the insertion of water channels in apical membranes of principal cells in collecting ducts. In nephrogenic diabetes insipidus (NDI), the kidney fails to concentrate urine in response to vasopressin. A male patient with an autosomal recessive form of NDI was found to be a compound heterozygote for two mutations in the gene encoding aquaporin-2, a water channel. Functional expression studies in Xenopus oocytes revealed that each mutation resulted in nonfunctional water channel proteins. Thus, aquaporin-2 is essential for vasopressin-dependent concentration of urine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deen, P M -- Verdijk, M A -- Knoers, N V -- Wieringa, B -- Monnens, L A -- van Os, C H -- van Oost, B A -- New York, N.Y. -- Science. 1994 Apr 1;264(5155):92-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Physiology, University of Nijmegen, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8140421" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Aquaporin 2 ; Aquaporin 6 ; *Aquaporins ; Base Sequence ; Cloning, Molecular ; Deamino Arginine Vasopressin/*pharmacology ; Diabetes Insipidus/*genetics/physiopathology ; Female ; Genes, Recessive ; Heterozygote ; Humans ; Kidney/metabolism/*physiology ; *Kidney Concentrating Ability ; Male ; Membrane Proteins/chemistry/genetics/*physiology ; Molecular Sequence Data ; Oocytes ; Pedigree ; Point Mutation ; Protein Structure, Secondary ; RNA, Complementary/genetics ; Water/metabolism ; Xenopus laevis
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  • 86
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    EPA dioxin reassessment (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bradfield, C A -- Gallo, M A -- Gasiewicz, T A -- Greenberg, R S -- Greenlee, W F -- Margolick, J -- Mattison, D R -- Munson, P -- Neal, R A -- Okey, A B -- New York, N.Y. -- Science. 1994 Dec 9;266(5191):1628-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7992038" target="_blank"〉PubMed〈/a〉
    Keywords: *Carcinogens ; Dioxins/*adverse effects ; Humans ; Risk Assessment ; United States ; United States Environmental Protection Agency
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  • 87
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    Reconstitution of an operational MHC class II compartment in nonantigen-presenting cells (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-02
    Description: Professional antigen-presenting cells (APCs) have a distinct compartment in which class II molecules are proposed to acquire antigenic peptides. Genetic evidence suggests that human leukocyte antigen (HLA)-DM, an unusual class II molecule, participates in this process. Peptide acquisition was reconstituted in nonprofessional APCs by transfection of class II, invariant chain (li), and H-2M, the murine equivalent of DM. The H-2M heterodimer appeared in an endosomal compartment, not at the cell surface, and the localization was independent of li. The data presented show that H-2M, class II, and li are the minimally required components for efficient formation of stable class II-peptide complexes, and thus for a functional class II compartment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Karlsson, L -- Peleraux, A -- Lindstedt, R -- Liljedahl, M -- Peterson, P A -- AI-26610/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 2;266(5190):1569-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉R. W. Johnson Pharmaceutical Research Institute, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7985028" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigen-Presenting Cells/immunology ; *Antigens, Differentiation, B-Lymphocyte ; B-Lymphocytes/immunology ; Cell Line ; Cell Membrane/immunology ; Endosomes/*immunology ; Fluorescent Antibody Technique ; H-2 Antigens/analysis/genetics/*metabolism ; HLA-DR3 Antigen/*metabolism ; HeLa Cells ; Histocompatibility Antigens Class II/*metabolism ; Humans ; Mice ; Mice, Inbred Strains ; Molecular Sequence Data ; Transfection
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  • 88
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    Cloning of a T cell growth factor that interacts with the beta chain of the interleukin-2 receptor (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-13
    Description: A cytokine was identified that stimulated the proliferation of T lymphocytes, and a complementary DNA clone encoding this new T cell growth factor was isolated. The cytokine, designated interleukin-15 (IL-15), is produced by a wide variety of cells and tissues and shares many biological properties with IL-2. Monoclonal antibodies to the beta chain of the IL-2 receptor inhibited the biological activity of IL-15, and IL-15 competed for binding with IL-2, indicating that IL-15 uses components of the IL-2 receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grabstein, K H -- Eisenman, J -- Shanebeck, K -- Rauch, C -- Srinivasan, S -- Fung, V -- Beers, C -- Richardson, J -- Schoenborn, M A -- Ahdieh, M -- New York, N.Y. -- Science. 1994 May 13;264(5161):965-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunex Research and Development Corporation, Seattle, WA 98101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8178155" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cells, Cultured ; *Cloning, Molecular ; Haplorhini ; Humans ; Interleukin-15 ; Interleukin-2/immunology/metabolism/pharmacology ; Interleukins/chemistry/*genetics/metabolism/pharmacology ; Killer Cells, Lymphokine-Activated/immunology ; Leukocytes, Mononuclear/immunology/metabolism ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Molecular Sequence Data ; Protein Structure, Secondary ; Receptors, Interleukin-2/immunology/*metabolism ; T-Lymphocytes/*immunology ; T-Lymphocytes, Cytotoxic/immunology
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  • 89
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    Recombination between viral RNA and transgenic plant transcripts (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-11
    Description: Transformed plants expressing the 3' two-thirds of the cowpea chlorotic mottle virus (CCMV) capsid gene were inoculated with a CCMV deletion mutant lacking the 3' one-third of the capsid gene. Although the deletion inoculum replicates in inoculated cells, systemic infections occur only if recombination restores a functional capsid gene. Four of 125 inoculated transgenic plants, representing three different transgenic lines, became systemically infected. Analysis of viral RNA confirmed that RNA recombination had united the transgenic messenger RNA and the challenging virus through aberrant homologous recombination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greene, A E -- Allison, R F -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1423-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824-1312.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128222" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Bromovirus/*genetics/physiology ; Capsid/genetics ; Gene Deletion ; Genes, Viral ; Molecular Sequence Data ; Mutation ; Plants, Genetically Modified/genetics/*microbiology ; Plants, Toxic ; RNA, Messenger/*genetics ; RNA, Viral/*genetics ; *Recombination, Genetic ; Tobacco/genetics/microbiology ; Virus Replication
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  • 90
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    Forensic DNA goes to court with O.J (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nowak, R -- New York, N.Y. -- Science. 1994 Sep 2;265(5177):1352-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7915432" target="_blank"〉PubMed〈/a〉
    Keywords: *DNA Fingerprinting/methods/standards ; *Famous Persons ; *Football ; History, 20th Century ; Humans ; Jurisprudence ; Laboratories/standards ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Reproducibility of Results ; United States
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  • 91
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    Crystal structure of LacI member, PurR, bound to DNA: minor groove binding by alpha helices (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-04
    Description: The three-dimensional structure of a ternary complex of the purine repressor, PurR, bound to both its corepressor, hypoxanthine, and the 16-base pair purF operator site has been solved at 2.7 A resolution by x-ray crystallography. The bipartite structure of PurR consists of an amino-terminal DNA-binding domain and a larger carboxyl-terminal corepressor binding and dimerization domain that is similar to that of the bacterial periplasmic binding proteins. The DNA-binding domain contains a helix-turn-helix motif that makes base-specific contacts in the major groove of the DNA. Base contacts are also made by residues of symmetry-related alpha helices, the "hinge" helices, which bind deeply in the minor groove. Critical to hinge helix-minor groove binding is the intercalation of the side chains of Leu54 and its symmetry-related mate, Leu54', into the central CpG-base pair step. These residues thereby act as "leucine levers" to pry open the minor groove and kink the purF operator by 45 degrees.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schumacher, M A -- Choi, K Y -- Zalkin, H -- Brennan, R G -- GM 24658/GM/NIGMS NIH HHS/ -- GM 49244/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):763-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Oregon Health Sciences University, Portland 97201-3098.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/*chemistry/genetics/metabolism ; Base Sequence ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; DNA/chemistry/*metabolism ; DNA-Binding Proteins/*chemistry/genetics/metabolism ; *Escherichia coli Proteins ; Hydrogen Bonding ; Hypoxanthine ; Hypoxanthines/metabolism ; Lac Repressors ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; *Operator Regions, Genetic ; Protein Conformation ; Protein Structure, Secondary ; Repressor Proteins/*chemistry/genetics/metabolism
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  • 92
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    Characterization of type I receptors for transforming growth factor-beta and activin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-01
    Description: Transforming growth factor-beta (TGF-beta) and activin exert their effects by binding to heteromeric complexes of type I and type II receptors. The type II receptors for TGF-beta and activin are transmembrane serine-threonine kinases; a series of related receptors, denoted activin receptor-like kinase (ALK) 1 to 5, have recently been identified, and ALK-6 is described here. ALK-5 has been shown to be a functional TGF-beta type I receptor. A systematic analysis revealed that most ALKs formed heteromeric complexes with the type II receptors for TGF-beta and activin after overexpression in COS cells; however, among the six ALKs, only ALK-5 was a functional TGF-beta type I receptor for activation of plasminogen activator inhibitor-1, and only ALK-2 and ALK-4 bound activin with high affinity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉ten Dijke, P -- Yamashita, H -- Ichijo, H -- Franzen, P -- Laiho, M -- Miyazono, K -- Heldin, C H -- New York, N.Y. -- Science. 1994 Apr 1;264(5155):101-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, Uppsala, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8140412" target="_blank"〉PubMed〈/a〉
    Keywords: Activin Receptors ; Activins ; Amino Acid Sequence ; Animals ; Bone Morphogenetic Protein Receptors, Type I ; Cell Line ; Inhibins/*metabolism ; Ligands ; Mice ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/chemistry/*metabolism ; Receptors, Growth Factor/chemistry/*metabolism ; Receptors, Transforming Growth Factor beta/chemistry/*metabolism ; Transforming Growth Factor beta/*metabolism
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  • 93
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    Looking ahead to cigarette regulation (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nowak, R -- New York, N.Y. -- Science. 1994 Aug 12;265(5174):863-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8052839" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Nicotine ; Smoking/*legislation & jurisprudence ; *Substance-Related Disorders ; United States ; United States Food and Drug Administration
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  • 94
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    A mass spectrometric solution to the address problem of combinatorial libraries (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-15
    Description: The molecular weights of femtomole quantities of small peptides attached to polystyrene beads have been determined with imaging time-of-flight secondary ion mass spectrometry. The analysis is made possible by the selective clipping of the bond linking the peptide to a bead with trifluoroacetic acid vapor before the secondary ion mass spectrometry assay. The approach can be applied to large numbers of 30- to 60-micrometer polystyrene beads for the direct characterization of massive combinatorial libraries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brummel, C L -- Lee, I N -- Zhou, Y -- Benkovic, S J -- Winograd, N -- New York, N.Y. -- Science. 1994 Apr 15;264(5157):399-402.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Pennsylvania State University, University Park 16802.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8153627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Image Processing, Computer-Assisted ; Mass Spectrometry/*methods ; Microspheres ; Molecular Sequence Data ; Molecular Weight ; Oligopeptides/*chemistry ; Polystyrenes
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  • 95
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    The politics of alternative medicine (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1994 Sep 30;265(5181):2000-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8091220" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Clinical Trials as Topic ; Complementary Therapies/economics/legislation & jurisprudence/*organization & ; administration ; Financing, Government ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; United States
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  • 96
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    Human embryo research. Grant applications pile up at NIH (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1994 Oct 7;266(5182):27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939641" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; Bioethics ; *Embryo Research ; *Embryo, Mammalian ; Federal Government ; Financing, Government ; *Guidelines as Topic ; Humans ; *National Institutes of Health (U.S.) ; Research/*standards ; Research Embryo Creation ; Research Support as Topic ; United States
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  • 97
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    Sources of dioxin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dudley, B -- Costner, P -- New York, N.Y. -- Science. 1994 Oct 21;266(5184):349-50; author reply 350-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939672" target="_blank"〉PubMed〈/a〉
    Keywords: Body Burden ; *Chlorine ; Dioxins/*analysis ; Environmental Pollutants/*analysis ; *Hazardous Substances ; Humans ; Hydrocarbons, Chlorinated ; United States
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 98
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    Fighting parasites on a shoestring (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aldhous, P -- New York, N.Y. -- Science. 1994 Jun 24;264(5167):1857-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8009209" target="_blank"〉PubMed〈/a〉
    Keywords: Developing Countries ; Foundations/economics ; Government Agencies/economics ; Humans ; International Agencies/*economics ; Parasitic Diseases/drug therapy ; Parasitology/*economics ; *Research Support as Topic ; Tropical Medicine/*economics ; United Nations ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    Nicotine scrutinized as FDA seeks to regulate cigarettes (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nowak, R -- New York, N.Y. -- Science. 1994 Mar 18;263(5153):1555-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128237" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dopamine/metabolism ; Drug and Narcotic Control ; Humans ; Limbic System/drug effects/metabolism ; *Nicotine/pharmacology ; Rats ; Receptors, Cholinergic/drug effects/metabolism ; *Smoking ; *Substance-Related Disorders ; United States ; *United States Food and Drug Administration
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 100
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    Efficient neutralization of primary isolates of HIV-1 by a recombinant human monoclonal antibody (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-11
    Description: The ability of antibodies to neutralize diverse primary isolates of human immunodeficiency virus-type 1 in vitro has been questioned, with implications for the likely efficacy of vaccines. A recombinant human antibody to envelope glycoprotein gp120 was generated and used to show that primary isolates are not refractory to antibody neutralization. The recombinant antibody neutralized more than 75 percent of the primary isolates tested at concentrations that could be achieved by passive immunization, for example, to interrupt maternal-fetal transmission of virus. The broad specificity and efficacy of the antibody implies the conservation of a structural feature on gp120, which could be important in vaccine design.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burton, D R -- Pyati, J -- Koduri, R -- Sharp, S J -- Thornton, G B -- Parren, P W -- Sawyer, L S -- Hendry, R M -- Dunlop, N -- Nara, P L -- AI27742/AI/NIAID NIH HHS/ -- AI33292/AI/NIAID NIH HHS/ -- AI35168/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Nov 11;266(5187):1024-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973652" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/immunology ; Acquired Immunodeficiency Syndrome/virology ; Amino Acid Sequence ; Antibodies, Monoclonal/*immunology ; Antibody Specificity ; HIV Antibodies/*immunology ; HIV Core Protein p24/analysis ; HIV Envelope Protein gp120/*immunology ; HIV-1/*immunology/isolation & purification ; Humans ; Immunization, Passive ; Immunoglobulin Fab Fragments/immunology ; Immunoglobulin G/immunology ; Infant ; Infant, Newborn ; Male ; Molecular Sequence Data ; Neutralization Tests ; Recombinant Proteins/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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