NR1I2, Pregnane X Receptor (PXR)

Aliases

BXR; PAR; PRR; PXR; SAR; SXR; ONR1; PAR1; PAR2; PARq

Structure

Molecular graphic for MMDB ID 22015 biounit 1

(From�Structure)

Link

NRR Pathway

Coming Soon

Summary

(From RefSeq)

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. [provided by RefSeq, Jul 2008]

Function

(From Aceview)

There are�138 articles�specifically referring to this gene in PubMed. Functionally, the gene has been tested for association to�diseases�(Asthma; Breast Neoplasms; Coronary Artery Disease; Osteomalacia) and proposed to participate in a�process�(regulation of transcription, DNA-dependent). Proteins are expected to have molecular�functions�(metal ion binding, protein binding, sequence-specific DNA binding, steroid hormone receptor activity and�2 others) and to�localize�in various compartments (cytoplasm, nucleus). Putativeprotein interactors�have been described (ACTN2, NCOA1, NCOA3, NCOR2, NR1I2, NUCB2, POU1F1, PPARGC1A, PSMC5, RXRA, RXRB, RXRG, SRC).�

Disease

Assays�

INDIGO Logo 2012

(From HuGENavigator)

HIV Infections�

Breast Neoplasms�

Colitis, Ulcerative�

Crohn Disease�

Inflammatory Bowel Diseases�

Neutropenia�

Acquired Immunodeficiency Syndrome�

Colorectal Neoplasms�

Epilepsy�

Drug-Induced Liver Injury�

Kidney Neoplasms�

Carcinoma, Renal Cell�

Cardiovascular Diseases�

Carcinoma�

Multiple Myeloma�

Pregnancy Complications�

Prostatic Neoplasms�

Recurrence�

Respiratory Tract Neoplasms�

Thyroid Neoplasms�

Tobacco Use Disorder�

Translocation, Genetic�

Viremia�

Myocardial Infarction�

Neoplasm Recurrence, Local�

Neoplasms, Second Primary�

Hypertriglyceridemia�

Hypospadias�

Head and Neck Neoplasms�

Hearing Loss�

Osteoporosis, Postmenopausal�

Kidney Failure, Chronic�

Carcinoma, Non-Small-Cell Lung�

Colonic Neoplasms�

Cryptorchidism�

Delayed Graft Function�

Dementia�

Diabetes Mellitus, Type 2�

Cholangitis, Sclerosing�

Cholestasis, Intrahepatic�

Chronic Periodontitis�

Adenocarcinoma�

Anemia�

Asthma�

Barrett Esophagus�

Birth Weight�

Bone Neoplasms�

Leukemia, Myelocytic, Acute�

Leukopenia�

Liver Cirrhosis�

Liver Cirrhosis, Biliary�

Liver Neoplasms�

Lung Neoplasms�

Lymphatic Metastasis�

Lymphoma�

Edema�

Coronary Artery Disease�

Esophageal Neoplasms�

Esophagitis, Peptic�

Fatty Liver�

Interactions

(From STRINGS)

ACTN2, NCOA1, NCOA3, NCOR2, NR1I2, NUCB2, POU1F1, PPARGC1A, PSMC5, RXRA, RXRB, RXRG, SRC

Human Isoforms

(From�Aceview)

The gene contains�12 distinct gt-ag introns. Transcription produces�9 different mRNAs, 7 alternatively spliced variants and 2 unspliced forms. There are 5 probablealternative promotors, 2 non overlapping alternative last exons and 4 validated�alternative polyadenylation sites�(see the�diagram). The mRNAs appear to differ by truncation of the 5' end, truncation of the 3' end, overlapping exons with different boundaries.�Efficacy of translation may be reduced by the presence of a shorter translated product (uORF) initiating at an AUG upstream of the main open reading frame (in variant dAug10).�


Drug Information

(From WikiPedia)

Agonists

5α-Dihydroprogesterone 5β-Dihydroprogesterone 17α-Hydroxypregnenolone 17α-Hydroxyprogesterone Δ4-Androstenedione Δ5-Androstenediol Δ5-Androstenedione AA-861 Allopregnanolone Alpha-Lipoic acid Ambrisentan AMI-193 Amlodipine besylate Antimycotics Artemisinin Aurothioglucose Bile acids Bithionol Bosentan Bumecaine Cafestol Cephaloridine Cephradine Chlorpromazine Ciglitazone Clindamycin Clofenvinfos Chloroxine Clotrimazole Colforsin Corticosterone Cyclophosphamide Cyproterone acetate Demecolcine Dexamethasone DHEA DHEA-S Dibunate sodium Diclazuril Dicloxacillin Dimercaprol Dinaline Docetaxel Docusate calcium Dodecylbenzenesulfonic acid Dronabinol Droxidopa Eburnamonine Ecopipam Enzacamene Epothilone B Erythromycin Famprofazone Febantel Felodipine Fenbendazole Fentanyl Flucloxacillin Fluorometholone Griseofulvin Haloprogin Hetacillin potassium Hyperforin (Hypericum perforatum) Indinavir sulfate Lasalocid sodium Levothyroxine Linolenic acid LOE-908 Loratadine Lovastatin Meclizine Methacycline Methylprednisolone Metyrapone Mevastatin Mifepristone Nafcillin Nicardipine Nicotine Nifedipine Nilvadipine Nisoldipine Norelgestromin Omeprazole Orlistat Oxatomide Paclitaxel Phenobarbital Piperine Plicamycin Prednisolone Pregnanolone Pregnenolone Pregnenolone 16α-carbonitrile Proadifen Progesterone Reserpine Reverse triiodothyronine Rifampicin Rifaximin Rimexolone Riodipine Ritonavir Simvastatin Sirolimus Spironolactone Spiroxatrine SR-12813 Suberoylanilide Sulfisoxazole Suramin Tacrolimus Tenylidone Terconazole Testosterone isocaproate Tetracycline Thiamylal sodium Thiothixene Thonzonium bromide Tianeptine Troglitazone Troleandomycin Tropanyl 3,5-dimethulbenzoate Zafirlukast Zearalanol

Antagonists

Ketoconazole

Expression

(From BioGPS)

References