PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10491133-9 1999 Only SIN-1, which produces peroxynitrite by generating both NO and superoxide anion, decreased the Soret region absorption and the pyridine hemochromogen spectrum of HO-2; superoxide dismutase (SOD) blocked the decrease. pyridine 131-139 heme oxygenase 2 Homo sapiens 166-170