PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11940652-4 2002 We also found that Ste20 kinase activity is stimulated by GTP-bound Cdc42 in vivo and this effect is blocked by the CRIB point mutations. Guanosine Triphosphate 58-61 Rho family GTPase CDC42 Saccharomyces cerevisiae S288C 68-73