Aliases for AHR Gene
External Ids for AHR Gene
Previous GeneCards Identifiers for AHR Gene
The protein encoded by this gene is a ligand-activated helix-loop-helix transcription factor involved in the regulation of biological responses to planar aromatic hydrocarbons. This receptor has been shown to regulate xenobiotic-metabolizing enzymes such as cytochrome P450. Before ligand binding, the encoded protein is sequestered in the cytoplasm; upon ligand binding, this protein moves to the nucleus and stimulates transcription of target genes. [provided by RefSeq, Sep 2015]
GeneCards Summary for AHR Gene
AHR (Aryl Hydrocarbon Receptor) is a Protein Coding gene. Diseases associated with AHR include Retinitis Pigmentosa 85 and Retinitis Pigmentosa. Among its related pathways are Regulation of lipid metabolism by Peroxisome proliferator-activated receptor alpha (PPARalpha) and Cytochrome P450 - arranged by substrate type. Gene Ontology (GO) annotations related to this gene include DNA-binding transcription factor activity and protein heterodimerization activity. An important paralog of this gene is ENSG00000283321.
UniProtKB/Swiss-Prot Summary for AHR Gene
Ligand-activated transcriptional activator. Binds to the XRE promoter region of genes it activates (PubMed:10395741, PubMed:28602820, PubMed:7961644, PubMed:23275542, PubMed:30373764). Activates the expression of multiple phase I and II xenobiotic chemical metabolizing enzyme genes (such as the CYP1A1 gene) (PubMed:7961644). Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons (PubMed:7961644). Involved in cell-cycle regulation (PubMed:12213388). Likely to play an important role in the development and maturation of many tissues (PubMed:12213388). Regulates the circadian clock by inhibiting the basal and circadian expression of the core circadian component PER1 (PubMed:28602820). Inhibits PER1 by repressing the CLOCK-ARNTL/BMAL1 heterodimer mediated transcriptional activation of PER1. The heterodimer ARNT:AHR binds to core DNA sequence 5'-TGCGTG-3' within the dioxin response element (DRE) of target gene promoters and activates their transcription (PubMed:28602820).
Aryl hydrocarbon receptors (AHRs) are cytosolic transcription factors that exist bound to co-chaperones in the resting state. Ligand binding causes the co-chaperones to dissociate, allowing AHR to translocate to the nucleus, dimerize and alter transcription of target genes.