PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26652036-1 2016 The two isoforms of human heme oxygenase (HO1 and HO2) catalyze oxidative degradation of heme to biliverdin, Fe, and CO. Carbon Monoxide 117-119 heme oxygenase 2 Homo sapiens 50-53