Seroatlas · Human Serome Atlas

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 KMIPEFFCDT

LocalizationUniProt · 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.

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

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.

Canonical record: https://seroatlas.com/gene/IL13RA2. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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