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  • Bacterial Proteins/genetics/metabolism  (1)
  • Calcium-Calmodulin-Dependent Protein Kinases/*antagonists & inhibitors  (1)
  • 1
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    Inhibition of the mitogen-activated protein kinase kinase superfamily by a Yersinia effector (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-18
    Description: The bacterial pathogen Yersinia uses a type III secretion system to inject several virulence factors into target cells. One of the Yersinia virulence factors, YopJ, was shown to bind directly to the superfamily of MAPK (mitogen-activated protein kinase) kinases (MKKs) blocking both phosphorylation and subsequent activation of the MKKs. These results explain the diverse activities of YopJ in inhibiting the extracellular signal-regulated kinase, c-Jun amino-terminal kinase, p38, and nuclear factor kappa B signaling pathways, preventing cytokine synthesis and promoting apoptosis. YopJ-related proteins that are found in a number of bacterial pathogens of animals and plants may function to block MKKs so that host signaling responses can be modulated upon infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orth, K -- Palmer, L E -- Bao, Z Q -- Stewart, S -- Rudolph, A E -- Bliska, J B -- Dixon, J E -- 18024/PHS HHS/ -- AI35175/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109-0606, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489373" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*physiology ; Calcium-Calmodulin-Dependent Protein Kinases/*antagonists & inhibitors ; Cell Line ; Enzyme Activation ; Enzyme Inhibitors/*pharmacology ; HeLa Cells ; Humans ; *MAP Kinase Kinase Kinase 1 ; NF-kappa B/metabolism ; Phosphorylation ; Protein Binding ; Protein-Serine-Threonine Kinases/genetics/metabolism ; Recombinant Fusion Proteins/genetics/metabolism ; Transfection ; Virulence ; Yersinia pseudotuberculosis/genetics/metabolism/pathogenicity/*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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  • 2
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    A process for controlling intracellular bacterial infections induced by membrane injury (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-05
    Description: Strategies for inhibiting phagolysosome fusion are essential for the intracellular survival and replication of many pathogens. We found that the lysosomal synaptotagmin Syt VII is required for a mechanism that promotes phagolysosomal fusion and limits the intracellular growth of pathogenic bacteria. Syt VII was required for a form of Ca2+-dependent phagolysosome fusion that is analogous to Ca2+-regulated exocytosis of lysosomes, which can be triggered by membrane injury. Bacterial type III secretion systems, which permeabilize membranes and cause Ca2+ influx in mammalian cells, promote lysosomal exocytosis and inhibit intracellular survival in Syt VII +/+ but not -/- cells. Thus, the lysosomal repair response can also protect cells against pathogens that trigger membrane permeabilization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roy, Deepannita -- Liston, David R -- Idone, Vincent J -- Di, Anke -- Nelson, Deborah J -- Pujol, Celine -- Bliska, James B -- Chakrabarti, Sabyasachi -- Andrews, Norma W -- AI34867/AI/NIAID NIH HHS/ -- AI43389/AI/NIAID NIH HHS/ -- AI48507/AI/NIAID NIH HHS/ -- GM64625/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Jun 4;304(5676):1515-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Microbial Pathogenesis and Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15178804" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/*growth & development/metabolism ; Bacterial Proteins/genetics/metabolism ; CHO Cells ; Calcium/metabolism ; *Calcium-Binding Proteins ; Cell Membrane/*physiology ; Cells, Cultured ; Cricetinae ; Endocytosis ; Exocytosis ; Listeria monocytogenes/growth & development ; Lysosomes/microbiology/physiology ; Macrophages/microbiology ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mutation ; Nerve Tissue Proteins/genetics/*physiology ; Permeability ; Phagosomes/microbiology/physiology ; Salmonella typhimurium/*growth & development/metabolism ; Synaptotagmins ; Vacuoles/microbiology ; Yersinia pseudotuberculosis/genetics/growth & development
    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
    BibTip Others were also interested in ...
    PAPER CURRENT
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