Rabbit anti-Human PXR Polyclonal Antibody

Uniprot Id

O75469

Target Species

Human

Target Name

NR1I2

Target Full Name

Nuclear receptor subfamily 1 group I member 2

Target Function

Nuclear receptor that binds and is activated by variety of endogenous and xenobiotic compounds. Transcription factor that activates the transcription of multiple genes involved in the metabolism and secretion of potentially harmful xenobiotics, drugs and endogenous compounds. Activated by the antibiotic rifampicin and various plant metabolites, such as hyperforin, guggulipid, colupulone, and isoflavones. Response to specific ligands is species-specific. Activated by naturally occurring steroids, such as pregnenolone and progesterone. Binds to a response element in the promoters of the CYP3A4 and ABCB1/MDR1 genes.

Target Subcellular Location

Nucleus.

Target Protein Families

Nuclear hormone receptor family, NR1 subfamily

Target Tissue Specificity

Expressed in liver, colon and small intestine.

Target Research Area

Signal Transduction

Target Synonyms

BXR; Nr1i2; NR1I2_HUMAN; Nuclear receptor subfamily 1 group I member 2; ONR 1; ONR1; Orphan nuclear receptor PAR 1; Orphan nuclear receptor PAR1; Orphan nuclear receptor PXR; OTTHUMP00000215173; OTTHUMP00000215174; OTTHUMP00000215175; PAR 1; PAR 2; PAR; PAR q; PAR1; PAR2; PARq; pregnane X nuclear receptor variant 2; Pregnane X receptor; PRR; PXR; SAR; Steroid and xenobiotic receptor; SXR

Target Background

This gene product belongs to the nuclear receptor superfamily, members of which are transcription factors characterized by a ligand-binding domain and a DNA-binding domain. The encoded protein is a transcriptional regulator of the cytochrome P450 gene CYP3A4, binding to the response element of the CYP3A4 promoter as a heterodimer with the 9-cis retinoic acid receptor RXR. It is activated by a range of compounds that induce CYP3A4, including dexamethasone and rifampicin. Several alternatively spliced transcripts encoding different isoforms, some of which use non-AUG (CUG) translation initiation codon, have been described for this gene. Additional transcript variants exist, however, they have not been fully characterized.