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  • Binding Sites  (2)
  • JNK Mitogen-Activated Protein Kinases  (2)
  • American Association for the Advancement of Science (AAAS)  (4)
  • PANGAEA
  • 2015-2019
  • 2000-2004  (4)
  • 2000  (4)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (4)
  • PANGAEA
Years
  • 2015-2019
  • 2000-2004  (4)
Year
  • 1
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    Bacteriophytochromes: phytochrome-like photoreceptors from nonphotosynthetic eubacteria (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-05
    Description: Phytochromes are a family of photoreceptors used by green plants to entrain their development to the light environment. The distribution of these chromoproteins has been expanded beyond photoautotrophs with the discovery of phytochrome-like proteins in the nonphotosynthetic eubacteria Deinococcus radiodurans and Pseudomonas aeruginosa. Like plant phytochromes, the D. radiodurans receptor covalently binds linear tetrapyrroles autocatalytically to generate a photochromic holoprotein. However, the attachment site is distinct, using a histidine to potentially form a Schiff base linkage. Sequence homology and mutational analysis suggest that D. radiodurans bacteriophytochrome functions as a light-regulated histidine kinase, which helps protect the bacterium from visible light.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S J -- Vener, A V -- Vierstra, R D -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2517-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, Cellular and Molecular Biology Program and Department of Horticulture, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617469" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Bacterial Proteins/chemistry/genetics/*metabolism ; Biliverdine/analogs & derivatives/metabolism ; Binding Sites ; Gram-Positive Cocci/genetics/*metabolism ; Histidine/metabolism ; Light ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Photoreceptors, Microbial/chemistry/genetics/*metabolism ; Phytochrome/metabolism ; Protein Kinases/chemistry/genetics/*metabolism ; Pseudomonas aeruginosa/*metabolism ; Signal Transduction
    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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    Requirement of JNK for stress-induced activation of the cytochrome c-mediated death pathway (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-08
    Description: The c-Jun NH2-terminal kinase (JNK) is activated when cells are exposed to ultraviolet (UV) radiation. However, the functional consequence of JNK activation in UV-irradiated cells has not been established. It is shown here that JNK is required for UV-induced apoptosis in primary murine embryonic fibroblasts. Fibroblasts with simultaneous targeted disruptions of all the functional Jnk genes were protected against UV-stimulated apoptosis. The absence of JNK caused a defect in the mitochondrial death signaling pathway, including the failure to release cytochrome c. These data indicate that mitochondria are influenced by proapoptotic signal transduction through the JNK pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tournier, C -- Hess, P -- Yang, D D -- Xu, J -- Turner, T K -- Nimnual, A -- Bar-Sagi, D -- Jones, S N -- Flavell, R A -- Davis, R J -- New York, N.Y. -- Science. 2000 May 5;288(5467):870-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Program in Molecular Medicine, Department of Biochemistry & Molecular Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10797012" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptotic Protease-Activating Factor 1 ; Caspase 3 ; Caspase 9 ; Caspases/metabolism ; Cell Count ; Cell Division ; Cells, Cultured ; Cytochrome c Group/*metabolism ; DNA Fragmentation ; Enzyme Activation ; Fibroblasts ; Gene Targeting ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Signaling System ; Methyl Methanesulfonate/pharmacology ; Mice ; Mitochondria/metabolism ; Mitogen-Activated Protein Kinases/genetics/*metabolism ; NF-kappa B/metabolism ; *Protein-Serine-Threonine Kinases ; Proteins/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Tumor Suppressor Protein p53/metabolism ; Ultraviolet Rays
    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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    Role of the guanosine triphosphatase Rac2 in T helper 1 cell differentiation (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-24
    Description: T helper 1 (TH1) cells mediate cellular immunity, whereas TH2 cells potentiate antiparasite and humoral immunity. We used a complementary DNA subtraction method, representational display analysis, to show that the small guanosine triphosphatase Rac2 is expressed selectively in murine TH1 cells. Rac induces the interferon-gamma (IFN-gamma) promoter through cooperative activation of the nuclear factor kappa B and p38 mitogen-activated protein kinase pathways. Tetracycline-regulated transgenic mice expressing constitutively active Rac2 in T cells exhibited enhanced IFN-gamma production. Dominant-negative Rac inhibited IFN-gamma production in murine T cells. Moreover, T cells from Rac2-/- mice showed decreased IFN-gamma production under TH1 conditions in vitro. Thus, Rac2 activates TH1-specific signaling and IFN-gamma gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, B -- Yu, H -- Zheng, W -- Voll, R -- Na, S -- Roberts, A W -- Williams, D A -- Davis, R J -- Ghosh, S -- Flavell, R A -- New York, N.Y. -- Science. 2000 Jun 23;288(5474):2219-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and Howard Hughes Medical Institute, Yale University School of Medicine, 310 Cedar Street, New Haven, CT 06520-8011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10864872" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cells, Cultured ; Cytokines/biosynthesis/genetics ; Gene Expression Regulation ; Humans ; Interferon-gamma/biosynthesis/*genetics ; JNK Mitogen-Activated Protein Kinases ; Jurkat Cells ; Lymphocyte Activation ; Mice ; Mice, Transgenic ; Mitogen-Activated Protein Kinases/metabolism ; NF-kappa B/metabolism ; Promoter Regions, Genetic ; Signal Transduction ; Th1 Cells/cytology/*immunology/*metabolism ; Transfection ; p38 Mitogen-Activated Protein Kinases ; rac GTP-Binding Proteins/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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  • 4
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    Architecture of RNA polymerase II and implications for the transcription mechanism (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-28
    Description: A backbone model of a 10-subunit yeast RNA polymerase II has been derived from x-ray diffraction data extending to 3 angstroms resolution. All 10 subunits exhibit a high degree of identity with the corresponding human proteins, and 9 of the 10 subunits are conserved among the three eukaryotic RNA polymerases I, II, and III. Notable features of the model include a pair of jaws, formed by subunits Rpb1, Rpb5, and Rpb9, that appear to grip DNA downstream of the active center. A clamp on the DNA nearer the active center, formed by Rpb1, Rpb2, and Rpb6, may be locked in the closed position by RNA, accounting for the great stability of transcribing complexes. A pore in the protein complex beneath the active center may allow entry of substrates for polymerization and exit of the transcript during proofreading and passage through pause sites in the DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cramer, P -- Bushnell, D A -- Fu, J -- Gnatt, A L -- Maier-Davis, B -- Thompson, N E -- Burgess, R R -- Edwards, A M -- David, P R -- Kornberg, R D -- GM49985/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 28;288(5466):640-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5126, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10784442" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Binding Sites ; Catalytic Domain ; Crystallization ; Crystallography, X-Ray ; DNA, Fungal/chemistry/metabolism ; Enzyme Stability ; Escherichia coli/enzymology ; Humans ; *Models, Molecular ; Protein Binding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; RNA Polymerase II/*chemistry/genetics/metabolism ; RNA, Fungal/chemistry/metabolism ; RNA, Messenger/chemistry/metabolism ; Thermus/enzymology ; Transcription Factors/chemistry/metabolism ; *Transcription Factors, General ; *Transcription, Genetic ; *Transcriptional Elongation Factors
    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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