PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3136768-1 1988 Porcine kidney diamine oxidase, a PQQ-enzyme, can be directly measured by formazan production with putrescine and nitroblue tetrazolium. Nitroblue Tetrazolium 114-135 amine oxidase copper containing 1 Homo sapiens 15-30