PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8883274-7 1996 The shortest thrombin clotting time and the earliest onset of turbidity increase were observed in fibrinogen gamma 358 Ser-->Cys; both parameters were little affected by calcium concentration. Cysteine 128-131 coagulation factor II, thrombin Homo sapiens 13-21