4OPB:
reference: Structure and boosting activity of a starch-degrading lytic polysaccharide monooxygenase., Lo Leggio L, Simmons TJ, Poulsen JC, Frandsen KE, Hemsworth GR, Stringer MA, von Freiesleben P, Tovborg M, Johansen KS, De Maria L, Harris PV, Soong CL, Dupree P, Tryfona T, Lenfant N, Henrissat B, Davies GJ, Walton PH, Nat Commun. 2015 Jan 22;6:5961. doi: 10.1038/ncomms6961. PMID: 25608804

This OCA Structure page
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