Aliases for RXRB Gene
External Ids for RXRB Gene
Previous GeneCards Identifiers for RXRB Gene
This gene encodes a member of the retinoid X receptor (RXR) family of nuclear receptors which are involved in mediating the effects of retinoic acid (RA). The encoded protein forms homodimers with the retinoic acid, thyroid hormone, and vitamin D receptors, increasing both DNA binding and transcriptional function on their respective response elements. This gene lies within the major histocompatibility complex (MHC) class II region on chromosome 6. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Jul 2012]
GeneCards Summary for RXRB Gene
RXRB (Retinoid X Receptor, Beta) is a Protein Coding gene. Diseases associated with RXRB include x-linked adrenal hypoplasia congenita and wegener granulomatosis. Among its related pathways are Pathways in cancer and Apoptotic Pathways in Synovial Fibroblasts. GO annotations related to this gene include sequence-specific DNA binding transcription factor activity and transcription coactivator activity. An important paralog of this gene is RXRG.
UniProtKB/Swiss-Prot for RXRB Gene
Receptor for retinoic acid. Retinoic acid receptors bind as heterodimers to their target response elements in response to their ligands, all-trans or 9-cis retinoic acid, and regulate gene expression in various biological processes. The RAR/RXR heterodimers bind to the retinoic acid response elements (RARE) composed of tandem 5-AGGTCA-3 sites known as DR1-DR5 (By similarity). Specifically binds 9-cis retinoic acid (9C-RA).
Retinoid X receptors (RXR) are members of the NR2B family of nuclear receptors and are common binding partners to many other nuclear receptors, including PPARs, liver X receptors (LXRs) and vitamin D receptors (VDR). RXR heterodimers act as ligand-dependent transcriptional regulators and increase the DNA-binding efficiency of its partner. Despite numerous studies, the physiological role of RXRs have yet to been fully elucidated and, as they can also exist as homodimers, there is the possibility that an independent RXR signaling pathway exists. There are three RXR subtypes; RXRalpha, RXRbeta and RXRgamma, each with two major isoforms (1 and 2). RXRalpha is expressed in the liver, kidney, epidermis and intestine, RXRbeta is widely distributed and RXRgamma is restricted to muscle, pituitary gland and certain parts of the brain.