2JKW:
reference: pi-Interaction Tuning of the Active Site Properties of Metalloproteins., Yanagisawa S, Crowley PB, Firbank SJ, Lawler AT, Hunter DM, McFarlane W, Li C, Kohzuma T, Banfield MJ, Dennison C, J Am Chem Soc. 2008 Oct 22. PMID: 18939838

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