DSM267 and DSM265 were gifts from M. Phillips from University of Texas (UT) Southwestern (35 (link)). l-dihydroorotic acid (DHO) was purchased from Sigma-Aldrich (St. Louis, MO). Amodiaquine, artemether, atovaquone, chloroquine, dihydroartemisinin, and mefloquine were purchased from Sigma-Aldrich (St. Louis, MO).