PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2061301-0 1991 T-cell antigen receptor ligation induces tyrosine phosphorylation of phospholipase C-gamma 1. Tyrosine 41-49 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 0-23 2061301-2 1991 Although the mechanism by which TCR ligation regulates PLC activity is unknown, recent studies suggest that coupling of this receptor complex to PLC activity is dependent on an intermediate protein tyrosine phosphorylation event(s). Tyrosine 198-206 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 32-35 2061301-3 1991 In the present study, we demonstrate that antibody-mediated TCR cross-linkage results in the tyrosine phosphorylation of PLC-gamma 1. Tyrosine 93-101 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 60-63 2061301-4 1991 Stimulation of the TCR for 30 s induced a 4-5-fold increase in the level of PLC activity recovered in anti-phosphotyrosine (Tyr(P)) antibody immunoprecipitates from stimulated Jurkat cells. Tyrosine 124-127 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 19-22 2061301-6 1991 Furthermore, the TCR-mediated increase in anti-Tyr(P) antibody-bound PLC activity was inhibited by staurosporine at drug concentrations identical with those required for in vivo inhibition of TCR-dependent phosphoinositide breakdown. Tyrosine 47-50 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 17-20 2061301-6 1991 Furthermore, the TCR-mediated increase in anti-Tyr(P) antibody-bound PLC activity was inhibited by staurosporine at drug concentrations identical with those required for in vivo inhibition of TCR-dependent phosphoinositide breakdown. Tyrosine 47-50 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 192-195 2061301-7 1991 Immunoblot analyses demonstrated that TCR ligation dramatically increased the level of tyrosine-phosphorylated PLC-gamma 1 present in anti-Tyr(P) antibody immunoprecipitates from stimulated Jurkat cells. Tyrosine 87-95 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 38-41 2061301-7 1991 Immunoblot analyses demonstrated that TCR ligation dramatically increased the level of tyrosine-phosphorylated PLC-gamma 1 present in anti-Tyr(P) antibody immunoprecipitates from stimulated Jurkat cells. Tyrosine 139-142 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 38-41 2061301-8 1991 These results strongly suggest that the TCR complex expressed by Jurkat cells is functionally coupled to the phosphoinositide-dependent signaling pathway through the tyrosine phosphorylation of PLC-gamma 1. Tyrosine 166-174 T cell receptor beta variable 20/OR9-2 (non-functional) Homo sapiens 40-43