Lactoperoxidase as a potential drug target
2016
Introduction: Lactoperoxidase (LPO) belongs to the immunologically relevant mammalian heme peroxidases. The enzyme contributes in external secretions to the humoral immune defense against pathogens by oxidation of thiocyanate (SCN–) and iodide (I–). The generation of oxidized thiocyanate and/or iodine species is also important in numerous biotechnological applications of LPO.Areas covered: In this review, we give an overview about the present knowledge of LPO concerning enzymatic structure, catalytic cycles and (pseudo-)halogenated species generated by the enzyme. Redox properties of LPO as well as kinetic aspects regarding the different enzymatic cycles are discussed in order to gain insights into the disturbance of the (pseudo-)halogenating enzyme activity under pathological conditions. Important structural features of LPO and crystallographic studies on the interaction and reaction of organic substrates with the enzyme are also summarized. A broad discussion is devoted to the binding and oxidation of s...
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