pubmed-article:10896934 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0285558 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1705328 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1705341 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0205145 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0031715 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1511625 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0040005 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1416498 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0812228 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1335204 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1418440 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1167622 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C0851285 | lld:lifeskim |
pubmed-article:10896934 | lifeskim:mentions | umls-concept:C1533691 | lld:lifeskim |
pubmed-article:10896934 | pubmed:issue | 40 | lld:pubmed |
pubmed-article:10896934 | pubmed:dateCreated | 2000-10-23 | lld:pubmed |
pubmed-article:10896934 | pubmed:abstractText | The mechanism of outside-in signaling by integrins parallels that for growth factor receptors. In both pathways, phosphorylation of a cytoplasmic segment on tyrosine generates a docking site for proteins containing Src homology 2 (SH2) and phosphotyrosine binding domains. We recently observed that phosphorylation of a threonine (Thr-753), six amino acids proximal to tyrosine 759 in beta(3) of the platelet specific integrin alpha(IIb)beta(3), inhibits outside-in signaling through this receptor. We hypothesized that the presence of phosphothreonine 753 either renders beta(3) a poor substrate for tyrosine kinases or inhibits the docking capabilities of the tyrosyl-phosphorylated form of beta(3.) The first alternative was tested by comparing the phosphorylation of beta(3) model peptides by the tyrosine kinase pp60(c-src) and we found that the presence of a phosphate group on a residue corresponding to Thr-753 did not detectably alter the kinetics of tyrosine phosphorylation. However, the presence of phosphate on this threonine inhibited the binding of Shc to tyrosyl-phosphorylated beta(3) peptide. The inhibitory effect of the phosphate group could be mimicked by substituting an aspartic acid for Thr-753, suggesting that a negative charge at this position modulates the binding of Shc and possibly other phosphotyrosine binding domain- and SH2-containing proteins. A survey of several protein kinases revealed that Thr-753 was avidly phosphorylated by PDK1 and Akt/PKB in vitro. These observations suggest that activation of PDK1 and/or Akt/PKB in platelets may modulate the binding activity and/or specificity of beta(3) for signaling molecules. | lld:pubmed |
pubmed-article:10896934 | pubmed:language | eng | lld:pubmed |
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pubmed-article:10896934 | pubmed:citationSubset | IM | lld:pubmed |
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pubmed-article:10896934 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:10896934 | pubmed:month | Oct | lld:pubmed |
pubmed-article:10896934 | pubmed:issn | 0021-9258 | lld:pubmed |
pubmed-article:10896934 | pubmed:author | pubmed-author:SandersonM... | lld:pubmed |
pubmed-article:10896934 | pubmed:author | pubmed-author:LereaK MKM | lld:pubmed |
pubmed-article:10896934 | pubmed:author | pubmed-author:KirkR IRI | lld:pubmed |
pubmed-article:10896934 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:10896934 | pubmed:day | 6 | lld:pubmed |
pubmed-article:10896934 | pubmed:volume | 275 | lld:pubmed |
pubmed-article:10896934 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:10896934 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:10896934 | pubmed:pagination | 30901-6 | lld:pubmed |
pubmed-article:10896934 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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pubmed-article:10896934 | pubmed:year | 2000 | lld:pubmed |
pubmed-article:10896934 | pubmed:articleTitle | Threonine phosphorylation of the beta 3 integrin cytoplasmic tail, at a site recognized by PDK1 and Akt/PKB in vitro, regulates Shc binding. | lld:pubmed |
pubmed-article:10896934 | pubmed:affiliation | Department of Cell Biology & Anatomy, New York Medical College, Valhalla, New York 10595, USA. | lld:pubmed |
pubmed-article:10896934 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:10896934 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
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