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  • Articles  (181)
  • Amino Acid Sequence  (181)
  • American Association for the Advancement of Science (AAAS)  (181)
  • American Meteorological Society
  • Blackwell Publishing Ltd
  • International Union of Crystallography
  • 2005-2009
  • 1995-1999  (181)
  • 1980-1984
  • 1935-1939
  • 1995  (181)
  • Natural Sciences in General  (181)
  • Medicine  (181)
  • Economics
  • Geography
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Collection
  • Articles  (181)
Publisher
  • American Association for the Advancement of Science (AAAS)  (181)
  • American Meteorological Society
  • Blackwell Publishing Ltd
  • International Union of Crystallography
Years
  • 2005-2009
  • 1995-1999  (181)
  • 1980-1984
  • 1935-1939
Year
Topic
  • 1
    Publication Date: 1995-04-28
    Description: DCoH, the dimerization cofactor of hepatocyte nuclear factor-1, stimulates gene expression by associating with specific DNA binding proteins and also catalyzes the dehydration of the biopterin cofactor of phenylalanine hydroxylase. The x-ray crystal structure determined at 3 angstrom resolution reveals that DCoH forms a tetramer containing two saddle-shaped grooves that comprise likely macromolecule binding sites. Two equivalent enzyme active sites flank each saddle, suggesting that there is a spatial connection between the catalytic and binding activities. Structural similarities between the DCoH fold and nucleic acid-binding proteins argue that the saddle motif has evolved to bind diverse ligands or that DCoH unexpectedly may bind nucleic acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Endrizzi, J A -- Cronk, J D -- Wang, W -- Crabtree, G R -- Alber, T -- New York, N.Y. -- Science. 1995 Apr 28;268(5210):556-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720-3206, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7725101" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Gene Expression Regulation ; Hydro-Lyases/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; Transcription Factors/*chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1995-11-03
    Description: A heptadecapeptide was identified and purified from porcine brain tissue as a ligand for an orphan heterotrimeric GTP-binding protein (G protein)-coupled receptor (LC132) that is similar in sequence to opioid receptors. This peptide, orphanin FQ, has a primary structure reminiscent of that of opioid peptides. Nanomolar concentrations of orphanin FQ inhibited forskolin-stimulated adenylyl cyclase activity in cells transfected with LC132. This inhibitory activity was not affected by the addition of opioid ligands, nor did the peptide activate opioid receptors. Orphanin FQ bound to its receptor in a saturable manner and with high affinity. When injected intracerebroventricularly into mice, orphanin FQ caused a decrease in locomotor activity but did not induce analgesia in the hot-plate test. However, the peptide produced hyperalgesia in the tail-flick assay. Thus, orphanin FQ may act as a transmitter in the brain by modulating nociceptive and locomotor behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reinscheid, R K -- Nothacker, H P -- Bourson, A -- Ardati, A -- Henningsen, R A -- Bunzow, J R -- Grandy, D K -- Langen, H -- Monsma, F J Jr -- Civelli, O -- DA 08562/DA/NIDA NIH HHS/ -- DA 09620/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1995 Nov 3;270(5237):792-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pharma Division, Hoffmann-La Roche AG, Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481766" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclase Inhibitors ; Amino Acid Sequence ; Analgesics/pharmacology ; Animals ; CHO Cells ; Colforsin/pharmacology ; Cricetinae ; GTP-Binding Proteins/*metabolism ; Hypothalamus/chemistry ; Injections, Intraventricular ; Injections, Spinal ; Ligands ; Mice ; Molecular Sequence Data ; Motor Activity/drug effects ; Opioid Peptides/chemistry/*isolation & purification/*metabolism/pharmacology ; Pain Measurement ; Receptors, Neuropeptide/*metabolism ; Receptors, Opioid/*metabolism ; Swine ; Transfection
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-05-12
    Description: Mutations in genes required for associative learning and memory in Drosophila exist, but isolation of the genes has been difficult because most are defined by a single, chemically induced allele. Here, a simplified genetic screen was used to identify candidate genes involved in learning and memory. Second site suppressors of the dunce (dnc) female sterility phenotype were isolated with the use of transposon mutagenesis. One suppressor mutation that was recovered mapped in the amnesiac (amn) gene. Cloning of the locus revealed that amn encodes a previously uncharacterized neuropeptide gene. Thus, with the cloning of amn, specific neuropeptides are implicated in the memory process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feany, M B -- Quinn, W G -- New York, N.Y. -- Science. 1995 May 12;268(5212):869-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7754370" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cloning, Molecular ; Codon ; DNA Transposable Elements ; DNA, Complementary/genetics ; Drosophila/*genetics/physiology ; *Drosophila Proteins ; Female ; *Genes, Insect ; Growth Hormone-Releasing Hormone/chemistry/genetics ; Male ; Memory/*physiology ; Molecular Sequence Data ; Mutagenesis, Insertional ; Mutation ; Neuropeptides/chemistry/*genetics ; Pituitary Adenylate Cyclase-Activating Polypeptide ; Sequence Homology, Amino Acid ; Suppression, Genetic
    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
    Publication Date: 1995-06-02
    Description: Fas (also known as Apo1 and CD95) is a cell surface receptor involved in apoptotic cell death. Fas expression and function were analyzed in three children (including two siblings) with a lymphoproliferative syndrome, two of whom also had autoimmune disorders. A large deletion in the gene encoding Fas and no detectable cell surface expression characterized the most affected patient. Clinical manifestations in the two related patients were less severe: Fas-mediated apoptosis was impaired and a deletion within the intracytoplasmic domain was detected. These findings illustrate the crucial regulatory role of Fas and may provide a molecular basis for some autoimmune diseases in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rieux-Laucat, F -- Le Deist, F -- Hivroz, C -- Roberts, I A -- Debatin, K M -- Fischer, A -- de Villartay, J P -- New York, N.Y. -- Science. 1995 Jun 2;268(5215):1347-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut National de la Sante et de la Recherche Medicale (INSERM) U 429, Hopital Necker-Enfants Malades, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7539157" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, CD95 ; Antigens, Surface/chemistry/*genetics/physiology ; Apoptosis ; Autoimmune Diseases/*genetics/immunology/pathology ; Base Sequence ; Child ; Female ; *Frameshift Mutation ; Humans ; Infant ; Lymphoproliferative Disorders/*genetics/immunology/pathology ; Male ; Molecular Sequence Data ; Sequence Deletion ; Syndrome ; Thrombocytopenia/genetics/immunology/pathology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1995-06-23
    Description: Deficiency in monoamine oxidase A (MAOA), an enzyme that degrades serotonin and norepinephrine, has recently been shown to be associated with aggressive behavior in men of a Dutch family. A line of transgenic mice was isolated in which transgene integration caused a deletion in the gene encoding MAOA, providing an animal model of MAOA deficiency. In pup brains, serotonin concentrations were increased up to ninefold, and serotonin-like immunoreactivity was present in catecholaminergic neurons. In pup and adult brains, norepinephrine concentrations were increased up to twofold, and cytoarchitectural changes were observed in the somatosensory cortex. Pup behavioral alterations, including trembling, difficulty in righting, and fearfulness were reversed by the serotonin synthesis inhibitor parachlorophenylalanine. Adults manifested a distinct behavioral syndrome, including enhanced aggression in males.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2844866/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2844866/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cases, O -- Seif, I -- Grimsby, J -- Gaspar, P -- Chen, K -- Pournin, S -- Muller, U -- Aguet, M -- Babinet, C -- Shih, J C -- K05 MH 00796/MH/NIMH NIH HHS/ -- R01 MH 37020/MH/NIMH NIH HHS/ -- R37 MH 39085/MH/NIMH NIH HHS/ -- R37 MH039085/MH/NIMH NIH HHS/ -- R37 MH039085-23/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1995 Jun 23;268(5218):1763-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre National de la Recherche Scientifique (CNRS), Unite de Recherche Associee (URA), Institut Curie, Orsay, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7792602" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression/*physiology ; Amino Acid Sequence ; Animals ; Base Sequence ; Blotting, Southern ; Brain/*metabolism ; Disease Models, Animal ; Dopamine/metabolism ; Female ; Interferon-beta/genetics ; Male ; Mice ; Mice, Inbred C3H ; Mice, Transgenic ; Molecular Sequence Data ; Monoamine Oxidase/*deficiency ; Norepinephrine/*metabolism ; Sequence Deletion ; Serotonin/*metabolism
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-04-14
    Description: The ability of cells to communicate with and respond to their external environment is critical for their continued existence. A universal feature of this communication is that the external signal must in some way penetrate the lipid bilayer surrounding the cell. In most cases of such signal acquisition, the signaling entity itself does not directly enter the cell but rather transmits its information to specific proteins present on the surface of the cell membrane. These proteins then communicate with additional proteins associated with the intracellular face of the membrane. Membrane localization and function of many of these proteins are dependent on their covalent modification by specific lipids, and it is the processes involved that form the focus of this article.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Casey, P J -- New York, N.Y. -- Science. 1995 Apr 14;268(5208):221-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Cancer Biology, Duke University Medical Center, Durham, NC 27710-3686, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716512" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Amino Acid Sequence ; Animals ; Cell Membrane/*metabolism ; GTP-Binding Proteins/*metabolism ; Glycosylphosphatidylinositols/*metabolism ; *Lipid Metabolism ; Molecular Sequence Data ; Protein-Tyrosine Kinases/*metabolism ; *Signal Transduction
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  • 7
    Publication Date: 1995-07-14
    Description: CD1 molecules are distantly related to the major histocompatibility complex (MHC) class I proteins. They are of unknown function. Screening random peptide phage display libraries with soluble empty mouse CD1 (mCD1) identified a peptide binding motif. It consists of three anchor positions occupied by aromatic or bulky hydrophobic amino acids. Equilibrium binding studies demonstrated that mCD1 binds peptides containing the appropriate motif with relatively high affinity. However, in contrast to classical MHC class I molecules, strong binding to mCD1 required relatively long peptides. Peptide-specific, mCD1-restricted T cell responses can be raised, which suggests that the findings are of immunological significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castano, A R -- Tangri, S -- Miller, J E -- Holcombe, H R -- Jackson, M R -- Huse, W D -- Kronenberg, M -- Peterson, P A -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):223-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542403" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigens, CD/chemistry/*immunology/metabolism ; Antigens, CD1 ; Cell Line ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Peptides/chemistry/*immunology/metabolism ; T-Lymphocytes, Cytotoxic/*immunology ; Transfection
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  • 8
    Publication Date: 1995-05-05
    Description: Lactacystin is a Streptomyces metabolite that inhibits cell cycle progression and induces neurite outgrowth in a murine neuroblastoma cell line. Tritium-labeled lactacystin was used to identify the 20S proteasome as its specific cellular target. Three distinct peptidase activities of this enzyme complex (trypsin-like, chymotrypsin-like, and peptidylglutamyl-peptide hydrolyzing activities) were inhibited by lactacystin, the first two irreversibly and all at different rates. None of five other proteases were inhibited, and the ability of lactacystin analogs to inhibit cell cycle progression and induce neurite outgrowth correlated with their ability to inhibit the proteasome. Lactacystin appears to modify covalently the highly conserved amino-terminal threonine of the mammalian proteasome subunit X (also called MB1), a close homolog of the LMP7 proteasome subunit encoded by the major histocompatibility complex. This threonine residue may therefore have a catalytic role, and subunit X/MB1 may be a core component of an amino-terminal-threonine protease activity of the proteasome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fenteany, G -- Standaert, R F -- Lane, W S -- Choi, S -- Corey, E J -- Schreiber, S L -- New York, N.Y. -- Science. 1995 May 5;268(5211):726-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Chemistry, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7732382" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcysteine/*analogs & derivatives/pharmacology ; Amino Acid Sequence ; Animals ; Carrier Proteins/metabolism ; Cattle ; Chromatography, High Pressure Liquid ; Cysteine Endopeptidases/*drug effects/metabolism ; Cysteine Proteinase Inhibitors/*pharmacology ; Electrophoresis, Polyacrylamide Gel ; Mice ; Molecular Sequence Data ; Multienzyme Complexes/*drug effects/metabolism ; Nerve Tissue Proteins/metabolism ; Neurons/*drug effects ; Proteasome Endopeptidase Complex ; Threonine/*drug effects ; Tumor Cells, Cultured
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  • 9
    Publication Date: 1995-07-14
    Description: Oligosaccharides and glycopeptides are of considerable importance in molecular biology and pharmacology. However, their synthesis is complicated by the large number of different linking sites between each saccharide unit, the need for stereochemical control, the chemical sensitivity of the glycopeptide bonds, and the need to harmonize diverse protecting groups. Here, an efficient solid-phase synthesis of three N-linked glycopeptides based on glycal assembly is presented. The peptide domain can be extended while the ensemble remains bound to the polymer. The glycopeptides synthesized here are among the largest N-linked glycopeptides ever accessed by either solution- or solid-phase synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberge, J Y -- Beebe, X -- Danishefsky, S J -- AI 16943/AI/NIAID NIH HHS/ -- T32 CA62948/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):202-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618080" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Carbohydrate Conformation ; Carbohydrate Sequence ; Glycopeptides/*chemical synthesis/chemistry/isolation & purification ; Magnetic Resonance Spectroscopy ; Molecular Sequence Data ; Oligosaccharides/chemistry ; Peptides/chemistry
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  • 10
    Publication Date: 1995-03-10
    Description: The crystal structure of the tungsten-containing aldehyde ferredoxin oxidoreductase (AOR) from Pyrococcus furiosus, a hyperthermophilic archaeon (formerly archaebacterium) that grows optimally at 100 degrees C, has been determined at 2.3 angstrom resolution by means of multiple isomorphous replacement and multiple crystal form averaging. AOR consists of two identical subunits, each containing an Fe4S4 cluster and a molybdopterin-based tungsten cofactor that is analogous to the molybdenum cofactor found in a large class of oxotransferases. Whereas the general features of the tungsten coordination in this cofactor were consistent with a previously proposed structure, each AOR subunit unexpectedly contained two molybdopterin molecules that coordinate a tungsten by a total of four sulfur ligands, and the pterin system was modified by an intramolecular cyclization that generated a three-ringed structure. In comparison to other proteins, the hyperthermophilic enzyme AOR has a relatively small solvent-exposed surface area, and a relatively large number of both ion pairs and buried atoms. These properties may contribute to the extreme thermostability of this enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, M K -- Mukund, S -- Kletzin, A -- Adams, M W -- Rees, D C -- 1F32 GM15006/GM/NIGMS NIH HHS/ -- GM50775/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1463-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, Pasadena, CA 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7878465" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Oxidoreductases/*chemistry/metabolism ; Amino Acid Sequence ; Archaea/*enzymology ; Binding Sites ; *Coenzymes ; Computer Graphics ; Crystallography, X-Ray ; Enzyme Stability ; Ferrous Compounds ; Metalloproteins/analysis/chemistry ; Models, Molecular ; Molecular Sequence Data ; Organometallic Compounds/analysis/*chemistry ; Oxidation-Reduction ; Protein Conformation ; Protein Structure, Secondary ; Pteridines/analysis/chemistry ; Pterins/analysis/*chemistry ; Surface Properties ; Temperature ; Tungsten/analysis/*chemistry
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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