PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9846881-1 1998 Guanine nucleotide exchange factors in the Dbl family activate Rho GTPases by accelerating dissociation of bound GDP, promoting acquisition of the GTP-bound state. Guanosine Diphosphate 113-116 MCF.2 cell line derived transforming sequence Homo sapiens 43-46