3FFS:
reference: The Structural Basis of Cryptosporidium -Specific IMP Dehydrogenase Inhibitor Selectivity., Macpherson IS, Kirubakaran S, Gorla SK, Riera TV, D'Aquino JA, Zhang M, Cuny GD, Hedstrom L, J Am Chem Soc. 2010 Jan 6. PMID: 20052976

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