RNA category is based on mRNA expression levels in the analyzed samples (RNA assay description). The categories include: tissue/cell line enriched, group enriched, tissue/cell line enhanced, expressed in all, mixed and not detected. RNA category is calculated separately for The Cancer Genome Atlas (TCGA) data from cancer tissues and internally generated Human Protein Atlas (HPA) data from normal tissues and cell lines.
TCGA (cancer tissue):
Group enriched (colorectal cancer, liver cancer, pancreatic cancer, stomach cancer)
HPA (cell line):
Group enriched (Hep G2, RH-30)
HPA (normal tissue):
Group enriched (colon, duodenum, gallbladder, liver, rectum, small intestine)
Protein evidence scores are generated from several independent sources and are classified as evidence at i) protein level, ii) transcript level, iii) no evidence, or iv) not available.
Evidence at protein level
ANTIBODY IHC RELIABILITY
Reliability score (score description), divided into Supported, Approved, or Uncertain, is evaluated in normal tissues and based on consistency between the staining pattern of one antibody or several antibodies with RNA-seq data and available gene/protein characterization data.
Kaplan-Meier plots for all cancers where high expression of this gene has significant (p<0.001) association with patient survival are shown in this summary. Whether the prognosis is favourable or unfavourable is indicated in brackets. Each Kaplan-Meier plot is clickable and redirects to a detailed page that includes individual expression and survival data for patients with the selected cancer.
Gene product is not prognostic.
RNA EXPRESSION OVERVIEWi
RNA expression overview shows RNA-seq data from The Cancer Genome Atlas (TCGA).
RNA-seq data in 17 cancer types are reported as median FPKM (number Fragments Per Kilobase of exon per Million reads), generated by the The Cancer Genome Atlas (TCGA). RNA cancer tissue category is calculated based on mRNA expression levels across all 17 cancer tissues and include: cancer tissue enriched, cancer group enriched, cancer tissue enhanced, expressed in all, mixed and not detected. To access cancer specific RNA and prognostic data, click on the cancer name.
RNA cancer category: Group enriched (colorectal cancer, liver cancer, pancreatic cancer, stomach cancer)
Antibody staining in 20 different cancers is summarized by a selection of four standard cancer tissue samples representative of the overall staining pattern. From left: colorectal cancer, breast cancer, prostate cancer and lung cancer. An additional fifth image can be added as a complement. The assay and annotation is described here. Note that samples used for immunohistochemistry by the Human Protein Atlas do not correspond to samples in the TCGA dataset.
For each cancer, the fraction of samples with protein expression level high, medium, low, or not detected are provided by the blue-scale color-coding (as described by the color-coding scale in the box to the left). The length of the bar represents the number of patient samples analyzed (max=12 patients). The images and annotations can be accessed by clicking on the cancer name or protein expression bar. If more than one antibody is analyzed, the tabs at the top of the staining summary section can be used to toggle between the different antibodies. The mouse-over function displays additional data for the features in the staining summary view.
Next to the cancer staining data, the protein expression data of normal tissues or specific cell types corresponding to each cancer are shown and protein expression levels are indicated by the blue-scale color coding.
Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.
NR1I2 (HGNC Symbol)
BXR, ONR1, PAR2, PXR, SXR
Nuclear receptor subfamily 1, group I, member 2 (HGNC Symbol)
Entrez gene 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]
The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.
At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.
Under the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50) (read more).
If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.
Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.
The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.
The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.
The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
O75469 [Direct mapping] Nuclear receptor subfamily 1 group I member 2 F1D8P9 [Target identity:100%; Query identity:100%] Nuclear receptor subfamily 1, group I, member 2, isoform CRA_b; Pregnane X nuclear receptor variant 2
Nuclear receptors Predicted intracellular proteins Plasma proteins Transcription factors Zinc-coordinating DNA-binding domains FDA approved drug targets Small molecule drugs
GO:0000977 [RNA polymerase II regulatory region sequence-specific DNA binding] GO:0001228 [transcriptional activator activity, RNA polymerase II transcription regulatory region sequence-specific binding] GO:0003700 [transcription factor activity, sequence-specific DNA binding] GO:0003707 [steroid hormone receptor activity] GO:0003713 [transcription coactivator activity] GO:0004879 [RNA polymerase II transcription factor activity, ligand-activated sequence-specific DNA binding] GO:0005515 [protein binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0006355 [regulation of transcription, DNA-templated] GO:0006367 [transcription initiation from RNA polymerase II promoter] GO:0006805 [xenobiotic metabolic process] GO:0007165 [signal transduction] GO:0008144 [drug binding] GO:0008202 [steroid metabolic process] GO:0008270 [zinc ion binding] GO:0010467 [gene expression] GO:0010628 [positive regulation of gene expression] GO:0030522 [intracellular receptor signaling pathway] GO:0042738 [exogenous drug catabolic process] GO:0042908 [xenobiotic transport] GO:0043401 [steroid hormone mediated signaling pathway] GO:0043565 [sequence-specific DNA binding] GO:0045892 [negative regulation of transcription, DNA-templated] GO:0045893 [positive regulation of transcription, DNA-templated] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:0046618 [drug export]