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  • Mutation  (3)
  • American Association for the Advancement of Science (AAAS)  (3)
  • Oxford University Press
  • 1995-1999  (3)
  • 1
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    Dosage compensation proteins targeted to X chromosomes by a determinant of hermaphrodite fate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-12
    Description: In many organisms, master control genes coordinately regulate sex-specific aspects of development. SDC-2 was shown to induce hermaphrodite sexual differentiation and activate X chromosome dosage compensation in Caenorhabditis elegans. To control these distinct processes, SDC-2 acts as a strong gene-specific repressor and a weaker chromosome-wide repressor. To initiate hermaphrodite development, SDC-2 associates with the promoter of the male sex-determining gene her-1 to repress its transcription. To activate dosage compensation, SDC-2 triggers assembly of a specialized protein complex exclusively on hermaphrodite X chromosomes to reduce gene expression by half. SDC-2 can localize to X chromosomes without other components of the dosage compensation complex, suggesting that SDC-2 targets dosage compensation machinery to X chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawes, H E -- Berlin, D S -- Lapidus, D M -- Nusbaum, C -- Davis, T L -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1800-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364546" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/embryology/*genetics/physiology ; *Caenorhabditis elegans Proteins ; *DNA-Binding Proteins ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Female ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Male ; Molecular Sequence Data ; Mutation ; Promoter Regions, Genetic ; Repressor Proteins/genetics/*physiology ; *Sex Determination Processes ; Transgenes ; X Chromosome/genetics/*metabolism
    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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    DPY-26, a link between dosage compensation and meiotic chromosome segregation in the nematode (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-06
    Description: The DPY-26 protein is required in the nematode Caenorhabditis elegans for X-chromosome dosage compensation as well as for proper meiotic chromosome segregation. DPY-26 was shown to mediate both processes through its association with chromosomes. In somatic cells, DPY-26 associates specifically with hermaphrodite X chromosomes to reduce their transcript levels. In germ cells, DPY-26 associates with all meiotic chromosomes to mediate its role in chromosome segregation. The X-specific localization of DPY-26 requires two dosage compensation proteins (DPY-27 and DPY-30) and two proteins that coordinately control both sex determination and dosage compensation (SDC-2 and SDC-3).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lieb, J D -- Capowski, E E -- Meneely, P -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- HD24324/HD/NICHD NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1732-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939869" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/embryology/genetics/*physiology ; *Caenorhabditis elegans Proteins ; Carrier Proteins/physiology ; Cell Nucleus/chemistry ; Chromosomes/*physiology ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Embryonic Development ; Female ; Gene Expression ; Genes, Helminth ; Germ Cells/physiology ; Helminth Proteins/analysis/genetics/*physiology ; Male ; *Meiosis ; Molecular Sequence Data ; Mutation ; Nuclear Proteins/physiology ; X Chromosome/physiology
    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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  • 3
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    Activation of Gal4p by galactose-dependent interaction of galactokinase and Gal80p (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-14
    Description: Yeast galactokinase (Gal1p) is an enzyme and a regulator of transcription. In addition to phosphorylating galactose, Gal1p activates Gal4p, the activator of GAL genes, but the mechanism of this regulation has been unclear. Here, biochemical and genetic evidence is presented to show that Gal1p activates Gal4p by direct interaction with the Gal4p inhibitor Gal80p. Interaction requires galactose, adenosine triphosphate, and the regulatory function of Gal1p. These data indicate that Gal1p-Gal80p complex formation results in the inactivation of Gal80p, thereby transmitting the galactose signal to Gal4p.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zenke, F T -- Engles, R -- Vollenbroich, V -- Meyer, J -- Hollenberg, C P -- Breunig, K D -- New York, N.Y. -- Science. 1996 Jun 14;272(5268):1662-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Mikrobiologie, Heinrich-Heine-Universitat Dusseldorf, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658143" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Coenzymes/metabolism ; DNA-Binding Proteins ; Fungal Proteins/*metabolism ; Galactokinase/genetics/*metabolism ; Galactose/*metabolism ; Kluyveromyces/genetics/metabolism ; Molecular Sequence Data ; Mutation ; Repressor Proteins/*metabolism ; Saccharomyces cerevisiae/genetics/*metabolism ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Transcription Factors/*metabolism
    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)
    Location Call Number Expected Availability
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