There are three retinoic X receptors (RXR): RXR-alpha, RXR-beta, and RXR-gamma, encoded by the RXRA, RXRB, RXRG genes, respectively.
Hai tres receptores X de retinoides, que son: RXR-alfa, RXR-beta, e RXR-gamma, codificados respectivamente nos xenes RXRA, RXRB, RXRG.