PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6977539-9 1982 The fact that identical results were obtained for the reactions between antithrombin and three enzymes with different specificities strongly suggests that the observed Arg-Ser cleavage site is the active site of antithrombin. Arginine 168-171 serpin family C member 1 Homo sapiens 72-84 6977539-9 1982 The fact that identical results were obtained for the reactions between antithrombin and three enzymes with different specificities strongly suggests that the observed Arg-Ser cleavage site is the active site of antithrombin. Arginine 168-171 serpin family C member 1 Homo sapiens 212-224