PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10463479-5 1999 All of the K-ras mutations were G-to-A transition mutations in the second position of codon 13 (glycine --> aspartic acid). Aspartic Acid 111-124 KRAS proto-oncogene, GTPase Homo sapiens 11-16