Figure 1: Comparison of human FXR family proteins.
Two N-terminal agenet domains that are often known as protein binding domains. NLS: Nuclear localization signal. Three K-homology domains that are KH0, KH1, and KH2. NES: Nuclear export signal. The C-terminal arginine-glycine-glycine (RGG) RNA-binding domain, known to bind to G-quadruplex RNA structures.