3I6Q:
reference: Crystal Structure and Catalytic Mechanism of Leucoanthocyanidin Reductase from Vitis vinifera., Mauge C, Granier T, d'Estaintot BL, Gargouri M, Manigand C, Schmitter JM, Chaudiere J, Gallois B, J Mol Biol. 2010 Feb 6. PMID: 20138891

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