2C7V:
reference: Structure and reactivity of Trypanosoma brucei pteridine reductase: inhibition by the archetypal antifolate methotrexate., Dawson A, Gibellini F, Sienkiewicz N, Tulloch LB, Fyfe PK, McLuskey K, Fairlamb AH, Hunter WN, Mol Microbiol. 2006 Sep;61(6):1457-68. PMID: 16968221

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