3AGB:
reference: Crystal Structures of the Substrate-Bound Forms of Red Chlorophyll Catabolite Reductase: Implications for Site-Specific and Stereospecific Reaction., Sugishima M, Okamoto Y, Noguchi M, Kohchi T, Tamiaki H, Fukuyama K, J Mol Biol. 2010 Aug 19. PMID: 20727901

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