3T2Z:
reference: Crystal structure of sulfide:quinone oxidoreductase from Acidithiobacillus ferrooxidans: insights into sulfidotrophic respiration and detoxification., Cherney MM, Zhang Y, Solomonson M, Weiner JH, James MN, J Mol Biol. 2010 Apr 30;398(2):292-305. Epub 2010 Mar 19. PMID: 20303979

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