نتایج جستجو برای: protein tyrosine phosphatase 1b
تعداد نتایج: 1300053 فیلتر نتایج به سال:
protein tyrosine phosphatases (ptpases) regulate tyrosine phosphorylation of target proteins involved in several aspects of cellular functions. enzyme activities of the ptpases in cytosolic and particulate fractions of rat ascites hepatoma cell lines were determined and compared with those of normal rat liver. our present data revealed that although there was no neoplatic-specific alteration of...
An immunodetection study of protein tyrosine phosphatase 1B (PTP-1B), SHP-2, and Src in isolated mitochondria from different rat tissues (brain, muscle, heart, liver, and kidney) revealed their exclusive localization in the brain. Given this result, we sought whether mitochondria respond to ATP and to the general tyrosine phosphatase inhibitor orthovanadate and found little or no change in the ...
Outside-in integrin alphaIIbbeta3 signaling is required for normal platelet thrombus formation and is triggered by c-Src activation through an unknown mechanism. In this study, we demonstrate an essential role for protein-tyrosine phosphatase (PTP)-1B in this process. In resting platelets, c-Src forms a complex with alphaIIbbeta3 and Csk, which phosphorylates c-Src tyrosine 529 to maintain c-Sr...
OBJECTIVE The receptor-like protein-tyrosine phosphatase (PTP) CD148 and the nontransmembrane PTP1-B have been shown to be net positive regulators of Src family kinases in platelets. In the present study, we compared the relative contributions of these PTPs in platelet activation by the major glycoprotein, glycoprotein VI, α(IIb)β(3), and C-type lectin-like receptor 2 (CLEC-2). METHODS AND RE...
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