PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21686750-6 2009 The F156L mutant K-Ras protein accumulated in the active, guanosine triphosphate-bound conformation and affected downstream signalling. Guanosine Triphosphate 58-80 KRAS proto-oncogene, GTPase Homo sapiens 17-22