PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3709569-5 1986 The reduced activities of two manganese-dependent enzymes, prolidase and arginase in erythrocytes in combination with an increased manganese content cannot be explained at the moment and leads to the speculation that manganese is inaccessible for enzyme activation. Manganese 30-39 peptidase D Homo sapiens 59-68