PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21586568-7 2011 RIN3 stimulated the formation of GTP-bound Rab31 in cell-free and in cell GEF activity assays. Guanosine Triphosphate 33-36 Rho/Rac guanine nucleotide exchange factor 2 Homo sapiens 74-77