4N7B:
reference: Structure of the (E)-4-hydroxy-3-methyl-but-2-enyl-diphosphate reductase from Plasmodium falciparum., Rekittke I, Olkhova E, Wiesner J, Demmer U, Warkentin E, Jomaa H, Ermler U, FEBS Lett. 2013 Nov 1. pii: S0014-5793(13)00799-0. doi:, 10.1016/j.febslet.2013.10.029. PMID: 24188825

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