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  • Oxidation-Reduction  (2)
  • Phosphatidylinositol 4,5-Diphosphate  (2)
  • Phosphatidylinositols/metabolism  (2)
  • 1
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    Reversing the inactivation of peroxiredoxins caused by cysteine sulfinic acid formation (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-04-26
    Description: The active-site cysteine of peroxiredoxins is selectively oxidized to cysteine sulfinic acid during catalysis, which leads to inactivation of peroxidase activity. This oxidation was thought to be irreversible. However, by metabolic labeling of mammalian cells with 35S, we show that the sulfinic form of peroxiredoxin I, produced during the exposure of cells to H2O2, is rapidly reduced to the catalytically active thiol form. The mammalian cells' ability to reduce protein sulfinic acid might serve as a mechanism to repair oxidatively damaged proteins or represent a new type of cyclic modification by which the function of various proteins is regulated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woo, Hyun Ae -- Chae, Ho Zoon -- Hwang, Sung Chul -- Yang, Kap-Seok -- Kang, Sang Won -- Kim, Kanghwa -- Rhee, Sue Goo -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):653-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cell Signaling Research and Division of Molecular Life Sciences, Ewha Womans University, Seoul 120-750, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714748" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catalysis ; Cell Line ; Cycloheximide/pharmacology ; Cysteine/*analogs & derivatives/*metabolism ; Dimerization ; HeLa Cells ; Humans ; Hydrogen Peroxide/*metabolism ; Methionine/metabolism ; Mice ; Neurotransmitter Agents ; Oxidation-Reduction ; Peroxidases/chemistry/*metabolism ; Peroxiredoxins ; Protein Synthesis Inhibitors/pharmacology ; Spectrometry, Mass, Electrospray Ionization ; Sulfhydryl Compounds/metabolism ; Sulfinic Acids/metabolism ; Tumor Cells, Cultured
    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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    Regulation of phospholipase C-gamma 1 by profilin and tyrosine phosphorylation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-08
    Description: Epidermal growth factor and platelet-derived growth factor can stimulate the production of the second messenger inositol trisphosphate in responsive cells, but the biochemical pathway for these signaling events has been uncertain because the reactions have not been reconstituted with purified molecules in vitro. A reconstitution is described that requires not only the growth factor, its receptor with tyrosine kinase activity, and the soluble phospholipase C-gamma 1, but also the small soluble actin-binding protein profilin. Profilin binds to the substrate phosphatidylinositol 4,5-bisphosphate and inhibits its hydrolysis by unphosphorylated phospholipase C-gamma 1. Phosphorylation of phospholipase C-gamma 1 by the epidermal growth factor receptor tyrosine kinase overcomes the inhibitory effect of profilin and results in an effective activation of phospholipase C-gamma 1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldschmidt-Clermont, P J -- Kim, J W -- Machesky, L M -- Rhee, S G -- Pollard, T D -- GM-26338/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1231-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Anatomy, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1848725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Contractile Proteins/metabolism ; Epidermal Growth Factor/*metabolism ; Inositol Phosphates/metabolism ; Isoenzymes/*metabolism ; Kinetics ; Microfilament Proteins/*metabolism ; Phosphatidylinositol 4,5-Diphosphate ; Phosphatidylinositols/metabolism ; Phosphorylation ; Profilins ; Protein-Tyrosine Kinases/*metabolism ; Receptor, Epidermal Growth Factor/*metabolism ; Signal Transduction ; Type C Phospholipases/*metabolism ; Tyrosine
    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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    Increase of the catalytic activity of phospholipase C-gamma 1 by tyrosine phosphorylation (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-30
    Description: Phospholipase C-gamma 1 (PLC-gamma 1), an isozyme of the phosphoinositide-specific phospholipase C family, which occupies a central role in hormonal signal transduction pathways, is an excellent substrate for the epidermal growth factor (EGF) receptor tyrosine kinase. Epidermal growth factor elicits tyrosine phosphorylation of PLC-gamma 1 and phosphatidylinositol 4,5-bisphosphate hydrolysis in various cell lines. The ability of tyrosine phosphorylation to activate the catalytic activity of PLC-gamma 1 was tested. Tyrosine phosphorylation in intact cells or in vitro increased the catalytic activity of PLC-gamma 1. Also, treatment of EGF-activated PLC-gamma 1 with a tyrosine-specific phosphatase substantially decreased the catalytic activity of PLC-gamma 1. These results suggest that the EGF-stimulated formation of inositol 1,4,5-trisphosphate and diacylglycerol in intact cells results, at least in part, from catalytic activation of PLC-gamma 1 through tyrosine phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishibe, S -- Wahl, M I -- Hernandez-Sotomayor, S M -- Tonks, N K -- Rhee, S G -- Carpenter, G -- CA43720/CA/NCI NIH HHS/ -- GMO7347/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Nov 30;250(4985):1253-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232-0146.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1700866" target="_blank"〉PubMed〈/a〉
    Keywords: Catalysis ; Diglycerides/metabolism ; Enzyme Activation/drug effects ; Epidermal Growth Factor/pharmacology ; Immunosorbent Techniques ; Inositol 1,4,5-Trisphosphate/metabolism ; Isoenzymes/*metabolism ; Kinetics ; Phosphatidylinositol 4,5-Diphosphate ; Phosphatidylinositol Diacylglycerol-Lyase ; Phosphatidylinositols/metabolism ; Phosphoric Diester Hydrolases/*metabolism ; Phosphorylation ; Phosphotyrosine ; Protein-Tyrosine Kinases/metabolism ; Receptor, Epidermal Growth Factor ; Signal Transduction ; Tyrosine/*analogs & derivatives/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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    Cell signaling. H2O2, a necessary evil for cell signaling (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-07-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rhee, Sue Goo -- New York, N.Y. -- Science. 2006 Jun 30;312(5782):1882-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular Life Science and Technology, Ewha Women's University, Seoul 120-750, South Korea. rheesg@ewha.ac.kr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809515" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Membrane/metabolism ; Cysteine/metabolism ; Cytosol/metabolism ; Humans ; Hydrogen Peroxide/*metabolism ; NADP/metabolism ; Organelles/metabolism ; Oxidation-Reduction ; Peroxidases/metabolism ; Peroxiredoxins ; Phosphorylation ; Protein Tyrosine Phosphatases/metabolism ; Protein-Tyrosine Kinases/metabolism ; Proteins/metabolism ; Reactive Oxygen Species/metabolism ; Receptors, Cell Surface/metabolism ; *Signal Transduction ; Tyrosine/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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