Expression
While the expression of LXRα and LXRβ in various tissues somewhat overlap, the tissue distribution pattern of these two isoforms overall differ considerably. LXRα expression is restricted to liver, kidney, intestine, fat tissue, macrophages, lung, and spleen and is highest in liver, hence the name liver X receptor α (LXRα). LXRβ is expressed in almost all tissues and organs, hence the early name UR (ubiquitous receptor). The different pattern of expression suggests that LXRα and LXRβ have different roles in regulating physiological function.
Read more about this topic: Liver X Receptor
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