RARB
Retinoic acid receptor beta
Also known as: HAP, NR1B2, RAR-beta, RARB_HUMAN, RARbeta, RRB2
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P10826
- Gene
- RARB
- Ensembl
- ENSG00000077092
- Chromosome
- 3
- Canonical length
- 455 aa
- Protein class
- Cancer-related genes, Disease related genes, FDA approved drug targets, Human disease related genes, Nuclear receptors, Predicted intracellular proteins, Transcription factors
- Subcellular location
- Nucleoplasm
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes retinoic acid receptor beta, a member of the thyroid-steroid hormone receptor superfamily of nuclear transcriptional regulators. This receptor localizes to the cytoplasm and to subnuclear compartments. It binds retinoic acid, the biologically active form of vitamin A which mediates cellular signalling in embryonic morphogenesis, cell growth and differentiation. It is thought that this protein limits growth of many cell types by regulating gene expression. The gene was first identified in a hepatocellular carcinoma where it flanks a hepatitis B virus integration site. Alternate promoter usage and differential splicing result in multiple transcript variants. [provided by RefSeq, Mar 2014]
Canonical amino-acid sequenceUniProt
455 residues, UniProt reviewed canonical sequence.
>P10826|RARB
1 MTTSGHACPV PAVNGHMTHY PATPYPLLFP PVIGGLSLPP LHGLHGHPPP SGCSTPSPAT
61 IETQSTSSEE LVPSPPSPLP PPRVYKPCFV CQDKSSGYHY GVSACEGCKG FFRRSIQKNM
121 IYTCHRDKNC VINKVTRNRC QYCRLQKCFE VGMSKESVRN DRNKKKKETS KQECTESYEM
181 TAELDDLTEK IRKAHQETFP SLCQLGKYTT NSSADHRVRL DLGLWDKFSE LATKCIIKIV
241 EFAKRLPGFT GLTIADQITL LKAACLDILI LRICTRYTPE QDTMTFSDGL TLNRTQMHNA
301 GFGPLTDLVF TFANQLLPLE MDDTETGLLS AICLICGDRQ DLEEPTKVDK LQEPLLEALK
361 IYIRKRRPSK PHMFPKILMK ITDLRSISAK GAERVITLKM EIPGSMPPLI QEMLENSEGH
421 EPLTPSSSGN TAEHSPSISP SSVENSGVSQ SPLVQLocalizationUniProt · AlphaFold · HPA
Whether an antibody against RARB can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.4
- Highest tissue expression
- 13 nTPM
Expression across tissuesHPA
Tissue
- kidney: 13 nTPM
- heart muscle: 12 nTPM
- placenta: 12 nTPM
- salivary gland: 10 nTPM
- prostate: 10 nTPM
- retina: 9.6 nTPM
Single-cell type
- müller glia: 680 nCPM
- conjunctival goblet cells: 339 nCPM
- cone photoreceptor cells: 302 nCPM
- brain inhibitory neurons: 293 nCPM
- pituicytes/fscs: 291 nCPM
- salivary duct cells: 286 nCPM
Immune cell
- basophil: 0.4 nTPM
- neutrophil: 0.3 nTPM
- naive B-cell: 0.2 nTPM
- eosinophil: 0.1 nTPM
- naive CD4 T-cell: 0.1 nTPM
- naive CD8 T-cell: 0.1 nTPM
Brain region
- basal ganglia: 29 nTPM
- choroid plexus: 23 nTPM
- cerebral cortex: 14 nTPM
- white matter: 9 nTPM
- medulla oblongata: 8 nTPM
- thalamus: 7 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about RARB.
Disease | AllUniProt
Conditions RARB is implicated in, by any mechanism.
- Microphthalmia, syndromic, 12 (MCOPS12) MIM:615524
Disease | GeneticClinVar
28 pathogenic / likely-pathogenic of 165 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Microphthalmia, syndromic 12
- Microphthalmia
- Inborn genetic diseases
- Intellectual disability, autosomal dominant 48
- Congenital ocular coloboma
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.12
- gnomAD pLI
- 1
- gnomAD missense Z
- 2.87
- DepMap mean gene effect
- -0.05
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- apoptotic process
- cell differentiation
- embryonic digestive tract development
- embryonic eye morphogenesis
- embryonic hindlimb morphogenesis
- glandular epithelial cell development
- growth plate cartilage development
- multicellular organism growth
- negative regulation of apoptotic process
- negative regulation of chondrocyte differentiation
- negative regulation of stem cell proliferation
- negative regulation of transcription by RNA polymerase II
- neural precursor cell proliferation
- neurogenesis
- outflow tract septum morphogenesis
- positive regulation of apoptotic process
- positive regulation of transcription by RNA polymerase II
- regulation of myelination
- retinoic acid receptor signaling pathway
- signal transduction
- stem cell proliferation
- striatum development
- ureteric bud development
- ventricular cardiac muscle cell differentiation
Molecular functions
- DNA binding
- DNA-binding transcription factor activity, RNA polymerase II-specific
- heterocyclic compound binding
- nuclear receptor activity
- nuclear retinoid X receptor binding
- protein-containing complex binding
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- sequence-specific double-stranded DNA binding
- zinc ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Nuclear hormone receptor, ligand-binding domain
- Zinc finger, nuclear hormone receptor-type
- Nuclear hormone receptor
- Retinoic acid receptor
- Zinc finger, NHR/GATA-type
- Nuclear hormone receptor-like domain superfamily
- Retinoic acid receptor, ligand-binding domain
- Retinoic acid receptor, DNA-binding domain
- Ligand-binding domain of nuclear hormone receptor
- Double treble clef zinc finger, C4 type
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of RARB in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads RARB as an antibody target. Whether an autoantibody or antibody against RARB could matter depends on whether native RARB is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
RARB is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label RARB as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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