IL13RA2
Interleukin-13 receptor subunit alpha-2
Also known as: CD213a2, CT19, I13R2_HUMAN, IL-13R, IL13BP
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q14627
- Gene
- IL13RA2
- Ensembl
- ENSG00000123496
- Chromosome
- X
- Canonical length
- 380 aa
- Protein class
- Cancer-related genes, CD markers, Predicted membrane proteins
- Subcellular location
- Nucleoplasm,Vesicles,Plasma membrane,Cell Junctions
OverviewNCBI Gene
The protein encoded by this gene is closely related to Il13RA1, a subuint of the interleukin 13 receptor complex. This protein binds IL13 with high affinity, but lacks cytoplasmic domain, and does not appear to function as a signal mediator. It is reported to play a role in the internalization of IL13. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
380 residues, UniProt reviewed canonical sequence.
>Q14627|IL13RA2
1 MAFVCLAIGC LYTFLISTTF GCTSSSDTEI KVNPPQDFEI VDPGYLGYLY LQWQPPLSLD
61 HFKECTVEYE LKYRNIGSET WKTIITKNLH YKDGFDLNKG IEAKIHTLLP WQCTNGSEVQ
121 SSWAETTYWI SPQGIPETKV QDMDCVYYNW QYLLCSWKPG IGVLLDTNYN LFYWYEGLDH
181 ALQCVDYIKA DGQNIGCRFP YLEASDYKDF YICVNGSSEN KPIRSSYFTF QLQNIVKPLP
241 PVYLTFTRES SCEIKLKWSI PLGPIPARCF DYEIEIREDD TTLVTATVEN ETYTLKTTNE
301 TRQLCFVVRS KVNIYCSDDG IWSEWSDKQC WEGEDLSKKT LLRFWLPFGF ILILVIFVTG
361 LLLRKPNTYP KMIPEFFCDTLocalizationUniProt · AlphaFold · HPA
Whether an antibody against IL13RA2 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
- Cell surface
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.35
- Highest tissue expression
- 31 nTPM
Expression across tissuesHPA
Tissue
- blood vessel: 31 nTPM
- testis: 28 nTPM
- hypothalamus: 12 nTPM
- pituitary gland: 12 nTPM
- liver: 9.4 nTPM
- choroid plexus: 8.5 nTPM
Single-cell type
- early spermatids: 355 nCPM
- late primary spermatocytes: 184 nCPM
- epididymal basal cells: 100 nCPM
- late spermatids: 69 nCPM
- early primary spermatocytes: 43 nCPM
- pituicytes/fscs: 20 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- hypothalamus: 24 nTPM
- midbrain: 7.6 nTPM
- medulla oblongata: 6.5 nTPM
- basal ganglia: 4 nTPM
- pons: 3.9 nTPM
- choroid plexus: 3.4 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about IL13RA2.
Disease | ImmuneIEDB
Conditions an epitope on IL13RA2 was assayed in.
- glioblastoma T cell
- brain glioblastoma multiforme T cell
- anaplastic astrocytoma T cell
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)
- 1.18
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.76
- DepMap mean gene effect
- 0.07
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- cytokine-mediated signaling pathway
- immunoglobulin mediated immune response
- interleukin-13-mediated signaling pathway
- negative regulation of immunoglobulin production
- negative regulation of mast cell degranulation
- positive regulation of cell population proliferation
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of IL13RA2 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 IL13RA2 as an antibody target. Whether an autoantibody or antibody against IL13RA2 could matter depends on whether native IL13RA2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
IL13RA2 is annotated at the cell surface, where native IL13RA2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label IL13RA2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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