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  • 1
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    Alternative cleavage of Alzheimer-associated presenilins during apoptosis by a caspase-3 family protease (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-07-18
    Description: Most cases of early-onset familial Alzheimer's disease (FAD) are caused by mutations in the genes encoding the presenilin 1 (PS1) and PS2 proteins, both of which undergo regulated endoproteolytic processing. During apoptosis, PS1 and PS2 were shown to be cleaved at sites distal to their normal cleavage sites by a caspase-3 family protease. In cells expressing PS2 containing the asparagine-141 FAD mutant, the ratio of alternative to normal PS2 cleavage fragments was increased relative to wild-type PS2-expressing cells, suggesting a potential role for apoptosis-associated cleavage of presenilins in the pathogenesis of Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, T W -- Pettingell, W H -- Jung, Y K -- Kovacs, D M -- Tanzi, R E -- New York, N.Y. -- Science. 1997 Jul 18;277(5324):373-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genetics and Aging Unit, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9219695" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/metabolism/pathology ; Amino Acid Chloromethyl Ketones/pharmacology ; Amino Acid Substitution ; Animals ; *Apoptosis ; Caspase 3 ; *Caspases ; Cysteine Endopeptidases/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Enzyme Activation ; Etoposide/pharmacology ; Membrane Proteins/chemistry/genetics/*metabolism ; Mutation ; Oligopeptides/pharmacology ; Phosphorylation ; Presenilin-1 ; Presenilin-2 ; Rats ; Staurosporine/pharmacology ; 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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    A zinc clasp structure tethers Lck to T cell coreceptors CD4 and CD8 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-23
    Description: The T cell coreceptors CD4 and CD8 both associate via their cytoplasmic tails with the N-terminus of the Src-family tyrosine kinase Lck. These interactions require zinc and are critical for T cell development and activation. We examined the folding and solution structures of ternary CD4-Lck-Zn2+ and CD8alpha-Lck-Zn2+ complexes. The coreceptor tails and the Lck N-terminus are unstructured in isolation but assemble in the presence of zinc to form compactly folded heterodimeric domains. The cofolded complexes have similar "zinc clasp" cores that are augmented by distinct structural elements. A dileucine motif required for clathrin-mediated endocytosis of CD4 is masked by Lck.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Peter W -- Sun, Zhen-Yu J -- Blacklow, Stephen C -- Wagner, Gerhard -- Eck, Michael J -- CA080942/CA/NCI NIH HHS/ -- HL61001/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1725-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500983" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Antigens, CD4/*chemistry/metabolism ; Antigens, CD8/*chemistry/metabolism ; Calorimetry ; Cytoplasm/chemistry ; Dimerization ; Dipeptides/chemistry ; Humans ; Hydrophobic and Hydrophilic Interactions ; Lymphocyte Activation ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nuclear Magnetic Resonance, Biomolecular ; Phosphorylation ; Phosphoserine/metabolism ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Sequence Alignment ; T-Lymphocytes/immunology/physiology ; Zinc/*chemistry/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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    BSKs mediate signal transduction from the receptor kinase BRI1 in Arabidopsis (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-07-26
    Description: Brassinosteroids (BRs) bind to the extracellular domain of the receptor kinase BRI1 to activate a signal transduction cascade that regulates nuclear gene expression and plant development. Many components of the BR signaling pathway have been identified and studied in detail. However, the substrate of BRI1 kinase that transduces the signal to downstream components remains unknown. Proteomic studies of plasma membrane proteins lead to the identification of three homologous BR-signaling kinases (BSK1, BSK2, and BSK3). The BSKs are phosphorylated by BRI1 in vitro and interact with BRI1 in vivo. Genetic and transgenic studies demonstrate that the BSKs represent a small family of kinases that activate BR signaling downstream of BRI1. These results demonstrate that BSKs are the substrates of BRI1 kinase that activate downstream BR signal transduction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2730546/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2730546/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tang, Wenqiang -- Kim, Tae-Wuk -- Oses-Prieto, Juan A -- Sun, Yu -- Deng, Zhiping -- Zhu, Shengwei -- Wang, Ruiju -- Burlingame, Alma L -- Wang, Zhi-Yong -- R01 GM066258/GM/NIGMS NIH HHS/ -- R01 GM066258-07/GM/NIGMS NIH HHS/ -- R01GM066258/GM/NIGMS NIH HHS/ -- RR012961/RR/NCRR NIH HHS/ -- RR01614/RR/NCRR NIH HHS/ -- RR019934/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2008 Jul 25;321(5888):557-60. doi: 10.1126/science.1156973.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18653891" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/enzymology/genetics/*metabolism ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Brassinosteroids ; Cell Membrane/metabolism ; Cholestanols/metabolism/pharmacology ; Molecular Sequence Data ; Mutagenesis, Insertional ; Phosphorylation ; Plants, Genetically Modified ; Protein Kinases/chemistry/genetics/*metabolism ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases ; Proteomics ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Steroids, Heterocyclic/metabolism/pharmacology
    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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