3QWB:
reference: Structural insights into the cofactor-assisted substrate recognition of yeast quinone oxidoreductase Zta1., Guo PC, Ma XX, Bao ZZ, Ma JD, Chen Y, Zhou CZ, J Struct Biol. 2011 Oct;176(1):112-8. Epub 2011 Jul 26. PMID: 21820057

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