Fig. 3.
KLB associates with multiple FGFRs to mediate FGF19 signaling. (A) Coimmunoprecipitation of FGFR1, FGFR3, and FGFR4 with KLB-3×FLAG in HuH-7, JHH-7, and FU97 cells. (B) A cartoon model of the FGF19-FGFR-KLB complex with indicated mutations introduced to perturb complex formation. (C) Effects of indicated KLB mutations on the coimmunoprecipitation of FGFR1, FGFR3, and FGFR4 with KLB-3×FLAG in HuH-7 and JHH-7 cells. (D) Effects of indicated KLB mutations on the viability of HuH-7 and JHH-7 cells after CRISPR inactivation of endogenous KLB. WT, wild type.