Myeloperoxidase（MPO）是髓系分化過程中合成的一種血紅素蛋白，是嗜中性粒細胞嗜鹽顆粒的主要成分。作為一個單鏈前體，髓過氧化物酶隨后裂解成輕和重鏈。成熟髓過氧化物酶是由2個輕鏈和2個重鏈組成的四聚體。這種酶產生的次鹵酸是中性粒細胞殺菌活性的核心。[由RefSeq提供，2014年11月]
Myeloperoxidase (MPO) is a heme protein synthesized during myeloid differentiation that constitutes the major component of neutrophil azurophilic granules. Produced as a single chain precursor, myeloperoxidase is subsequently cleaved into a light and heavy chain. The mature myeloperoxidase is a tetramer composed of 2 light chains and 2 heavy chains. This enzyme produces hypohalous acids central to the microbicidal activity of neutrophils. [provided by RefSeq, Nov 2014]