PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12794066-6 2003 Surface residues of thrombin further involved in high specificity fibrin-enhanced factor XIII activation were identified as His-66, Tyr-71, and Asn-74. Histidine 124-127 coagulation factor II, thrombin Homo sapiens 20-28