4FDQ:
reference: Two Oxidation Sites for Low Redox Potential Substrates: A DIRECTED MUTAGENESIS, KINETIC, AND CRYSTALLOGRAPHIC STUDY ON PLEUROTUS ERYNGII VERSATILE PEROXIDASE., Morales M, Mate MJ, Romero A, Martinez MJ, Martinez AT, Ruiz-Duenas FJ, J Biol Chem. 2012 Nov 30;287(49):41053-67. doi: 10.1074/jbc.M112.405548. Epub, 2012 Oct 15. PMID: 23071108

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