3ITW:
reference: A New Scaffold of an Old Protein Fold Ensures Binding to the Bisintercalator Thiocoraline., Biswas T, Zolova OE, Lombo F, de la Calle F, Salas JA, Tsodikov OV, Garneau-Tsodikova S, J Mol Biol. 2010 Feb 1. PMID: 20122935

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