Description
The retinoid X receptor(RXR) is a pleiotropic nuclear receptor transcription factor that interacts with a variety of nuclear receptor dimeric partner. RXR binds cognate response elements as a homodimer in the presence of its ligand, 9-cis retinoic acid, or as a heterodimer with other members of the nuclear hormone receptor superfamily including retinoic acid receptors(RAR), thyroid hormone receptors(TR), vitamin D receptors and peroxisome proliferators-activated receptors(PPAR). The RXR family includes three difference isoforms ; RXR a, b, g. Human RXR a gene is localized on 9q34.9 and encodes two major isoforms(RXR a1, RXR a2)