PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26702053-3 2016 We have used ovarian granulosa cells as a model to investigate this pathway, based on evidence that the GPCR agonist follicle-stimulating hormone (FSH) promotes the protein kinase A (PKA)-dependent phosphorylation of insulin receptor substrate 1 (IRS1) on tyrosine residues that activate PI3K. Tyrosine 256-264 insulin receptor substrate 1 Homo sapiens 217-245 26702053-7 2016 Activation of PI3K thus requires both PKA-mediated relief of IRS1 inhibition and IGF-1R-dependent tyrosine phosphorylation of IRS1. Tyrosine 98-106 insulin receptor substrate 1 Homo sapiens 126-130 26702053-8 2016 Treatment with FSH and increasing concentrations of exogenous IGF-1 triggers synergistic IRS1 tyrosine phosphorylation at PI3K-activating residues that persists downstream through protein kinase B (AKT) and FOXO1 (forkhead box protein O1) to drive synergistic expression of genes that underlies follicle maturation. Tyrosine 94-102 insulin receptor substrate 1 Homo sapiens 89-93