4K3I:
reference: Structures of MauG in complex with quinol and quinone MADH., Yukl ET, Jensen LM, Davidson VL, Wilmot CM, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Jul 1;69(Pt 7):738-43., doi: 10.1107/S1744309113016539. Epub 2013 Jun 27. PMID: 23832199

This OCA Structure page
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