PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9255347-4 1997 Proteins that can stimulate the GTPase activity of Ras (GAPs) ensure that following mitogenic stimulations, they return to their inactive GDP-bound state; amongst these proteins are p120-GAP, neurofibomin (the product of the susceptibility gene to type I neurofibromatosis), as well as the inositol 1,3,4,5-tetrakisphosphate-dependent GAPIP4BF. Guanosine Diphosphate 138-141 RAS p21 protein activator 1 Homo sapiens 182-190