Aliases for AR Gene
External Ids for AR Gene
Previous Symbols for AR Gene
The androgen receptor gene is more than 90 kb long and codes for a protein that has 3 major functional domains: the N-terminal domain, DNA-binding domain, and androgen-binding domain. The protein functions as a steroid-hormone activated transcription factor. Upon binding the hormone ligand, the receptor dissociates from accessory proteins, translocates into the nucleus, dimerizes, and then stimulates transcription of androgen responsive genes. This gene contains 2 polymorphic trinucleotide repeat segments that encode polyglutamine and polyglycine tracts in the N-terminal transactivation domain of its protein. Expansion of the polyglutamine tract causes spinal bulbar muscular atrophy (Kennedy disease). Mutations in this gene are also associated with complete androgen insensitivity (CAIS). Two alternatively spliced variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2008]
GeneCards Summary for AR Gene
AR (Androgen Receptor) is a Protein Coding gene. Diseases associated with AR include spermatogenesis arrest and isolated micropenis. Among its related pathways are Pathways in cancer and Akt Signaling. GO annotations related to this gene include sequence-specific DNA binding transcription factor activity and chromatin binding. An important paralog of this gene is NR3C1.
UniProtKB/Swiss-Prot for AR Gene
Steroid hormone receptors are ligand-activated transcription factors that regulate eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Transcription factor activity is modulated by bound coactivator and corepressor proteins. Transcription activation is down-regulated by NR0B2. Activated, but not phosphorylated, by HIPK3 and ZIPK/DAPK3.
Androgen receptors (ARs) (also known as dihydrotestosterone receptors) are nuclear hormone receptors of the NR3C class, which also includes mineralocorticoid, progesterone and glucocorticoid receptors. They are expressed in bone marrow, mammary gland, prostate, testicular and muscle tissues where they exist as dimers coupled to Hsp90 and HMGB proteins, which are shed upon ligand binding. Activated androgen receptors bind to nuclear response elements of the genome, with an inverted palindromic 15 nucleotide sequence, to regulate gene transcription. Androgen receptors also effect gene expression through interaction with transcription factors including AP-1, NF-kappaB and STAT. Target genes of androgen receptors include insulin-like growth factor 1 (IGF-1) and genes involved in the development of primary and secondary male sexual characteristics, maintenance of sexual function and possibly have a causative role in aggressive behavior. Furthermore, androgen receptors have recently been shown to have actions that are independent of DNA interactions. Congential mutations in androgen receptors are associated with androgen insensitivity syndromes, virility and spinal and bulbar muscular atrophy. Perturbations in androgen receptor expression is also a common feature of prostate cancer. The human gene encoding the androgen receptor has been localized to Xq11-12.