6EVG:
reference: Structural and functional characterisation of multi-copper oxidase CueO from lignin-degrading bacterium Ochrobactrum sp. reveal its activity towards lignin model compounds and lignosulfonate., Granja-Travez RS, Wilkinson RC, Persinoti GF, Squina FM, Fulop V, Bugg TDH, FEBS J. 2018 Mar 25. doi: 10.1111/febs.14437. PMID: 29575798

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