Seroatlas · Human Serome Atlas

IGKV3-15

Immunoglobulin kappa variable 3-15

Also known as: KV315_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
P01624
Gene
IGKV3-15
Ensembl
ENSG00000244437
Chromosome
2
Canonical length
115 aa
Protein class
Immunoglobulin genes, Predicted secreted proteins
Subcellular location
Plasma membrane,Cytosol
Secretome location
Immunoglobulin genes

OverviewNCBI Gene

Predicted to enable antigen binding activity. Predicted to be involved in immune response. Located in blood microparticle. [provided by Alliance of Genome Resources, Jul 2025]

Canonical amino-acid sequenceUniProt

115 residues, UniProt reviewed canonical sequence.

>P01624|IGKV3-15
     1  MEAPAQLLFL LLLWLPDTTG EIVMTQSPAT LSVSPGERAT LSCRASQSVS SNLAWYQQKP
    61  GQAPRLLIYG ASTRATGIPA RFSGSGSGTE FTLTISSLQS EDFAVYYCQQ YNNWP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against IGKV3-15 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
0
Highest tissue expression
1,864 nTPM

Expression across tissuesHPA

Tissue

  • tonsil: 1,864 nTPM
  • spleen: 952 nTPM
  • urinary bladder: 737 nTPM
  • colon: 735 nTPM
  • rectum: 607 nTPM
  • stomach: 592 nTPM

Single-cell type

  • adipocytes: 0 nCPM
  • adrenal cortex cells: 0 nCPM
  • adrenal medulla cells: 0 nCPM
  • alveolar cells type 1: 0 nCPM
  • alveolar cells type 2: 0 nCPM
  • astrocytes: 0 nCPM

Immune cell

  • memory B-cell: 2,254 nTPM
  • naive B-cell: 1,663 nTPM
  • total PBMC: 194 nTPM
  • classical monocyte: 3.4 nTPM
  • neutrophil: 1.9 nTPM
  • basophil: 1.8 nTPM

Brain region

  • spinal cord: 2.7 nTPM
  • cerebral cortex: 1.8 nTPM
  • white matter: 1.8 nTPM
  • medulla oblongata: 1.4 nTPM
  • choroid plexus: 0.6 nTPM
  • hypothalamus: 0.5 nTPM

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads IGKV3-15 as an antibody target. Whether an autoantibody or antibody against IGKV3-15 could matter depends on whether native IGKV3-15 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

IGKV3-15 is annotated at the cell surface, where native IGKV3-15 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 IGKV3-15 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/IGKV3-15. 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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