Lytic polysaccharide monooxygenases(LPMOs) are newly discovered copper-dependent oxidases usually with diverse modular combinations, and can decompose biomass polysaccharides through an oxidative mechanism. The catalytic domains of LPMOs share a β-sandwich structure, and their active sites contain a single copper ion. Their catalytic reaction process is more complicated than that of glycoside hydrolases. After binding the substrate, electrons provided by the electron donor are transferred to Cu [ Ⅱ ] in the...