PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25835505-6 2015 These include competition with chloride, the natural co-substrate; switching the MPO activity from a two electron oxidation to a one electron pathway causing the buildup of the inactive Compound II, and its subsequent decay to MPO-Fe(III) instead of generating HOCl; binding to MPO above the heme iron, thereby preventing the access of H2O2 to the catalytic site of the enzyme; and direct scavenging of HOCl. Chlorides 31-39 myeloperoxidase Homo sapiens 81-84