2QXX:
reference: Mechanism of dTTP inhibition of the bifunctional dCTP deaminase:dUTPase encoded by Mycobacterium tuberculosis., Helt SS, Thymark M, Harris P, Aagaard C, Dietrich J, Larsen S, Willemoes M, J Mol Biol. 2008 Feb 15;376(2):554-69. Epub 2007 Dec 5. PMID: 18164314

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