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NR1I2 nuclear receptor subfamily 1 group I member 2 [ Homo sapiens (human) ]

Gene ID: 8856, updated on 24-Nov-2020

Summary

Official Symbol
NR1I2provided by HGNC
Official Full Name
nuclear receptor subfamily 1 group I member 2provided by HGNC
Primary source
HGNC:HGNC:7968
See related
Ensembl:ENSG00000144852 MIM:603065
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
BXR; PAR; PRR; PXR; SAR; SXR; ONR1; PAR1; PAR2; PARq
Summary
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]
Expression
Biased expression in small intestine (RPKM 14.5), duodenum (RPKM 13.0) and 4 other tissues See more
Orthologs
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Genomic context

See NR1I2 in Genome Data Viewer
Location:
3q13.33
Exon count:
10
Annotation release Status Assembly Chr Location
109.20201120 current GRCh38.p13 (GCF_000001405.39) 3 NC_000003.12 (119782101..119818487)
105 previous assembly GRCh37.p13 (GCF_000001405.25) 3 NC_000003.11 (119499331..119552295)

Chromosome 3 - NC_000003.12Genomic Context describing neighboring genes Neighboring gene uncharacterized LOC105374064 Neighboring gene cilia and flagella associated protein 91 Neighboring gene prohibitin pseudogene 8 Neighboring gene glycogen synthase kinase 3 beta Neighboring gene presenilin associated rhomboid like pseudogene Neighboring gene microRNA 6529

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Pathways from PubChem

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Gene Ontology Provided by GOA

Component Evidence Code Pubs
chromatin ISA
Inferred from Sequence Alignment
more info
 
intermediate filament cytoskeleton IDA
Inferred from Direct Assay
more info
 
nuclear body IDA
Inferred from Direct Assay
more info
 
nucleoplasm IDA
Inferred from Direct Assay
more info
 
nucleoplasm TAS
Traceable Author Statement
more info
 

General protein information

Preferred Names
nuclear receptor subfamily 1 group I member 2
Names
orphan nuclear receptor PAR1
orphan nuclear receptor PXR
pregnane X nuclear receptor variant 2
pregnane X receptor
steroid and xenobiotic receptor

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_011856.1 RefSeqGene

    Range
    5001..43002
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_003889.4NP_003880.3  nuclear receptor subfamily 1 group I member 2 isoform 1

    See identical proteins and their annotated locations for NP_003880.3

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) contains an alternate 5' terminal exon compared to transcript variant 2, and initiates translation from an in-frame, downstream non-AUG (CUG) codon, resulting in a shorter isoform (1) with a different N-terminus compared to isoform 2.
    Source sequence(s)
    AC069444, KF457674
    Consensus CDS
    CCDS43136.1
    UniProtKB/Swiss-Prot
    O75469
    Related
    ENSP00000377319.2, ENST00000393716.6
    Conserved Domains (2) summary
    cd06934
    Location:143428
    NR_LBD_PXR_like; The ligand binding domain of xenobiotic receptors:pregnane X receptor and constitutive androstane receptor
    cl02596
    Location:40127
    NR_DBD_like; DNA-binding domain of nuclear receptors is composed of two C4-type zinc fingers
  2. NM_022002.3NP_071285.1  nuclear receptor subfamily 1 group I member 2 isoform 2

    See identical proteins and their annotated locations for NP_071285.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) encodes the longest isoform (2) and initiates translation from the standard AUG codon present in its 5' terminal exon.
    Source sequence(s)
    AC069444, KF457674
    Consensus CDS
    CCDS2995.1
    UniProtKB/Swiss-Prot
    O75469
    UniProtKB/TrEMBL
    F1D8P9
    Related
    ENSP00000336528.4, ENST00000337940.4
    Conserved Domains (2) summary
    cd06934
    Location:182467
    NR_LBD_PXR_like; The ligand binding domain of xenobiotic receptors:pregnane X receptor and constitutive androstane receptor
    cd07162
    Location:79166
    NR_DBD_PXR; DNA-binding domain of pregnane X receptor (PXRs) is composed of two C4-type zinc fingers
  3. NM_033013.3NP_148934.1  nuclear receptor subfamily 1 group I member 2 isoform 3

    See identical proteins and their annotated locations for NP_148934.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) contains an alternate 5' terminal exon, and uses a different acceptor splice site at one of the internal coding exons, compared to transcript variant 2. It initiates translation from an in-frame, downstream non-AUG (CUG) codon, resulting in a shorter isoform (3) with a different N-terminus and missing an internal segment, compared to isoform 2.
    Source sequence(s)
    AC069444, KF457674
    Consensus CDS
    CCDS54627.1
    UniProtKB/Swiss-Prot
    O75469
    Related
    ENSP00000420297.1, ENST00000466380.5
    Conserved Domains (2) summary
    cd06934
    Location:143391
    NR_LBD_PXR_like; The ligand binding domain of xenobiotic receptors:pregnane X receptor and constitutive androstane receptor
    cl02596
    Location:40127
    NR_DBD_like; DNA-binding domain of nuclear receptors is composed of two C4-type zinc fingers

RefSeqs of Annotated Genomes: Homo sapiens Updated Annotation Release 109.20201120

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p13 Primary Assembly

Genomic

  1. NC_000003.12 Reference GRCh38.p13 Primary Assembly

    Range
    119782101..119818487
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
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