PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10915606-3 2000 Our study provides experimental evidence that histidine at position 1658 and aspartic acid at position 1686 constitute together with the previously identified serine at position 1752 (S1752) the catalytic triad of the pestiviral NS3 serine protease. Aspartic Acid 77-90 KRAS proto-oncogene, GTPase Homo sapiens 229-232