Haem protein that catalyzes oxidations by H2O2, including MPO-chloride-mediated killing of microbes and tumor cells, inactivation of chemotactic factors, cross-linking of proteins and iodination of proteins. Haem protein that catalyzes oxidations by H2O2, including MPO-chloride-mediated killing of microbes and tumor cells, inactivation of chemotactic factors, cross-linking of proteins and iodination of proteins. Alternative name: MPO. Purity: ≥98%. Appearance: Green solid. Formulation: Lyophilized from 5mM phosphate buffer, pH 7.4. Source: Isolated from human leukocytes. Negative for HBsAG-, HCV- and HIV-antibodies.