The doxycycline-inducible pLVX-TRE3G-ZsGreen1 (Takara Bio USA) vectors containing ZsGreen1-IRES-CYP3A4 and ZsGreen1-IRES-CYP3A5 are previously described.30 (link) All cloning primers are presented in Table S5. For this study, the ZsGreen1-IRES-CYP3A cassettes were subcloned into pcDNA3 (Thermo Fisher Scientific, Waltham, MA) to achieve constitutive gene expression, with ZsGreen1 serving as a transfection reporter. ZsGreen1-IRES-CYP3A4 was amplified with primers oAH522 and oAH523, and ZsGreen1-IRES-CYP3A5 was amplified with primers oAH522 and oAH524. The amplicons were cloned into HindIII-digested pcDNA3 with NEBuilder HiFi DNA Assembly Master Mix (New England Biolabs). Mutants were made with the QuikChange II Site-Directed Mutagenesis Kit (Agilent Technologies, Santa Clara, CA) with the primers listed in Table S5.