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  • Organic Chemistry  (12)
  • Cloning, Molecular  (6)
  • 1995-1999  (8)
  • 1950-1954  (10)
  • 1
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    Structure of the VHL-ElonginC-ElonginB complex: implications for VHL tumor suppressor function (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-16
    Description: Mutation of the VHL tumor suppressor is associated with the inherited von Hippel-Lindau (VHL) cancer syndrome and the majority of kidney cancers. VHL binds the ElonginC-ElonginB complex and regulates levels of hypoxia-inducible proteins. The structure of the ternary complex at 2.7 angstrom resolution shows two interfaces, one between VHL and ElonginC and another between ElonginC and ElonginB. Tumorigenic mutations frequently occur in a 35-residue domain of VHL responsible for ElonginC binding. A mutational patch on a separate domain of VHL indicates a second macromolecular binding site. The structure extends the similarities to the SCF (Skp1-Cul1-F-box protein) complex that targets proteins for degradation, supporting the hypothesis that VHL may function in an analogous pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stebbins, C E -- Kaelin, W G Jr -- Pavletich, N P -- New York, N.Y. -- Science. 1999 Apr 16;284(5413):455-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Structural Biology, Joan and Sanford I. Weill Graduate School of Medical Sciences, Cornell University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10205047" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Cell Cycle Proteins/chemistry/metabolism ; Cloning, Molecular ; Crystallography, X-Ray ; *Genes, Tumor Suppressor ; Humans ; Hydrogen Bonding ; *Ligases ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Mutation, Missense ; Neoplasms/genetics ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Proteins/*chemistry/genetics/metabolism ; S-Phase Kinase-Associated Proteins ; Surface Properties ; Transcription Factors/*chemistry/metabolism ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Von Hippel-Lindau Tumor Suppressor Protein ; von Hippel-Lindau Disease/*genetics
    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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  • 2
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    Molecular coproscopy: dung and diet of the extinct ground sloth Nothrotheriops shastensis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-17
    Description: DNA from excrements can be amplified by means of the polymerase chain reaction. However, this has not been possible with ancient feces. Cross-links between reducing sugars and amino groups were shown to exist in a Pleistocene coprolite from Gypsum Cave, Nevada. A chemical agent, N-phenacylthiazolium bromide, that cleaves such cross-links made it possible to amplify DNA sequences. Analyses of these DNA sequences showed that the coprolite is derived from an extinct sloth, presumably the Shasta ground sloth Nothrotheriops shastensis. Plant DNA sequences from seven groups of plants were identified in the coprolite. The plant assemblage that formed part of the sloth's diet exists today at elevations about 800 meters higher than the cave.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poinar, H N -- Hofreiter, M -- Spaulding, W G -- Martin, P S -- Stankiewicz, B A -- Bland, H -- Evershed, R P -- Possnert, G -- Paabo, S -- New York, N.Y. -- Science. 1998 Jul 17;281(5375):402-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institute for Evolutionary Anthropology and Zoological Institute, University of Munich, Luisenstrasse 14, D-80333 Munich, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9665881" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cloning, Molecular ; DNA, Mitochondrial/chemistry/*isolation & purification ; DNA, Plant/chemistry/*isolation & purification ; DNA, Ribosomal/chemistry/*isolation & purification ; *Diet ; Feces/*chemistry ; *Fossils ; Maillard Reaction ; Molecular Sequence Data ; Plants/classification/genetics ; Polymerase Chain Reaction ; RNA, Ribosomal/genetics ; Ribulose-Bisphosphate Carboxylase/genetics ; *Sloths/genetics ; Thiazoles
    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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    A neuropeptide gene defined by the Drosophila memory mutant amnesiac (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    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
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    Myt1: a membrane-associated inhibitory kinase that phosphorylates Cdc2 on both threonine-14 and tyrosine-15 (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-10-06
    Description: Cdc2 is the cyclin-dependent kinase that controls entry of cells into mitosis. Phosphorylation of Cdc2 on threonine-14 and tyrosine-15 inhibits the activity of the enzyme and prevents premature initiation of mitosis. Although Wee1 has been identified as the kinase that phosphorylates tyrosine-15 in various organisms, the threonine-14-specific kinase has not been isolated. A complementary DNA was cloned from Xenopus that encodes Myt1, a member of the Wee1 family that was discovered to phosphorylate Cdc2 efficiently on both threonine-14 and tyrosine-15. Myt1 is a membrane-associated protein that contains a putative transmembrane segment. Immunodepletion studies suggested that Myt1 is the predominant threonine-14-specific kinase in Xenopus egg extracts. Myt1 activity is highly regulated during the cell cycle, suggesting that this relative of Wee1 plays a role in mitotic control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mueller, P R -- Coleman, T R -- Kumagai, A -- Dunphy, W G -- New York, N.Y. -- Science. 1995 Oct 6;270(5233):86-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 216-76, Howard Hughes Medical Institute, California Institute of Technology, Pasadena 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569953" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; CDC2 Protein Kinase/*metabolism ; *Cell Cycle Proteins ; Cell Membrane/enzymology ; Cloning, Molecular ; Cyclins/metabolism ; Interphase ; Mitosis ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; Oocytes/enzymology ; Phosphorylation ; Phosphothreonine/metabolism ; Phosphotyrosine/metabolism ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Protein-Tyrosine Kinases/chemistry/genetics/*metabolism ; Recombinant Proteins/metabolism ; Xenopus ; *Xenopus Proteins
    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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    Purification and molecular cloning of Plx1, a Cdc25-regulatory kinase from Xenopus egg extracts (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-09-06
    Description: Cdc2, the cyclin-dependent kinase that controls mitosis, is negatively regulated by phosphorylation on its threonine-14 and tyrosine-15 residues. Cdc25, the phosphatase that dephosphorylates both of these residues, undergoes activation and phosphorylation by multiple kinases at mitosis. Plx1, a kinase that associates with and phosphorylates the amino-terminal domain of Cdc25, was purified extensively from Xenopus egg extracts. Cloning of its complementary DNA revealed that Plx1 is related to the Polo family of protein kinases. Recombinant Plx1 phosphorylated Cdc25 and stimulated its activity in a purified system. Cdc25 phosphorylated by Plx1 reacted strongly with MPM-2, a monoclonal antibody to mitotic phosphoproteins. These studies indicate that Plx1 may participate in control of mitotic progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kumagai, A -- Dunphy, W G -- New York, N.Y. -- Science. 1996 Sep 6;273(5280):1377-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, 216-76, Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703070" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; CDC2 Protein Kinase/metabolism ; Cell Cycle Proteins/chemistry/*metabolism ; Cloning, Molecular ; Cyclins/metabolism ; Enzyme Activation ; Molecular Sequence Data ; Mutation ; Oocytes/enzymology ; Peptide Mapping ; Phosphoprotein Phosphatases/chemistry/*metabolism ; Phosphorylation ; Phosphoserine/analysis ; Phosphothreonine/analysis ; Protein-Serine-Threonine Kinases/chemistry/genetics/*isolation & ; purification/metabolism ; Recombinant Proteins/metabolism ; Xenopus ; *Xenopus Proteins ; cdc25 Phosphatases
    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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  • 6
    Electronic Resource
    Electronic Resource
    Antihistaminica I. Basische Phenoläther-Derivate (1950)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 33 (1950), S. 516-522 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Synthese von 2-[o-(β-Dimethylamino-alkoxy)-benzyl]-thiophenen und 2-[o-(β-Dimethylamino-alkoxy)-benzyl]-pyridinen und ihre Antihistaminwirkung beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19500330312
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  • 7
    Electronic Resource
    Electronic Resource
    Antihistaminica IV. Derivate des N,N-Dimethyl-1,2-diaminocyclohexans und Nachtrag zu unserer III. Mitteilung über α-Aminoalkylstilbene (1951)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 34 (1951), S. 1937-1943 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Synthese von Derivaten des 1,2-Diaminocyclohexans und deren Antihistaminwirksamkeit beschrieben.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19510340628
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  • 8
    Electronic Resource
    Electronic Resource
    Aufruf für Bewerber um ein Stipendium aus der „Van't Hoff-Stiftung“ zur Unterstützung von Forschern auf dem Gebiete der reinen oder angewandten Chemie (1952)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 35 (1952), S. 1436-1436 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19520350451
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  • 9
    Electronic Resource
    Electronic Resource
    Über cyclische Derivate des Malonamidesters. I (1952)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 35 (1952), S. 2556-2560 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Dienkondensation von Butadien und Alkylidencyanessigestern zu alkylierten 1-Cyano-Δ4-cyclohexencarbonsäureestern, die Hydrierung zu den entsprechenden Cyclohexanderivaten und die Überführung der letzteren in cyclische Derivate des Malonamidesters beschrieben.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19520350741
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  • 10
    Electronic Resource
    Electronic Resource
    Aufruf für Bewerber um ein Stipendium aus der „Van 't Hoff-Stiftung“ zur Unterstützung von Forschern auf dem Gebiete der reinen oder angewandten Chemie. (1953)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 36 (1953), S. 920-920 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19530360425
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