3PNR:
reference: Structural basis for the regulation of cysteine-protease activity by a new class of protease inhibitors in Plasmodium., Hansen G, Heitmann A, Witt T, Li H, Jiang H, Shen X, Heussler VT, Rennenberg A, Hilgenfeld R, Structure. 2011 Jul 13;19(7):919-29. PMID: 21742259

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