PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10681520-4 2000 Tyrosine phosphorylation of Ras-GRF1 is critical for the induction of Rac-GEF activity as evidenced by inhibition by tyrosine kinase inhibitors. Tyrosine 0-8 Ras protein specific guanine nucleotide releasing factor 1 Homo sapiens 28-36 10681520-6 2000 Ras-GRF1 transiently expressed with v-Src was tyrosine-phosphorylated and showed significant GEF activity toward Rac, but not Rho and Cdc42, which was comparable with that induced by Gbetagamma. Tyrosine 46-54 Ras protein specific guanine nucleotide releasing factor 1 Homo sapiens 0-8 10681520-9 2000 Taken together, tyrosine phosphorylation by Src is sufficient for the induction of Rac-GEF activity of Ras-GRF1, which may imply the involvement of Src downstream of Gbetagamma to regulate Ras-GRF1. Tyrosine 16-24 Ras protein specific guanine nucleotide releasing factor 1 Homo sapiens 103-111 10681520-9 2000 Taken together, tyrosine phosphorylation by Src is sufficient for the induction of Rac-GEF activity of Ras-GRF1, which may imply the involvement of Src downstream of Gbetagamma to regulate Ras-GRF1. Tyrosine 16-24 Ras protein specific guanine nucleotide releasing factor 1 Homo sapiens 189-197