PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 4019503-6 1985 The carboxypeptidase B which converts the oxytocinyl peptides showed a fairly sharp pH dependence with an optimum of 5.5-6, was activated by cobalt ion, and was inhibited by cupric ion, EDTA, and a thiol protease inhibitor, p-chloromercuribenzoate. Cobalt 141-147 carboxypeptidase B1 Bos taurus 4-22