4RV8:
reference: Structure of Cryptosporidium IMP dehydrogenase bound to an inhibitor with in vivo antiparasitic activity., Kim Y, Makowska-Grzyska M, Gorla SK, Gollapalli DR, Cuny GD, Joachimiak A, Hedstrom L, Acta Crystallogr F Struct Biol Commun. 2015 May;71(Pt 5):531-8. doi:, 10.1107/S2053230X15000187. Epub 2015 Apr 21. PMID: 25945705

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