Seroatlas · Human Serome Atlas

OR4K3

Olfactory receptor 4K3

Also known as: OR4K3_HUMAN

Cross-references: UniProt · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q96R72
Gene
OR4K3
Canonical length
315 aa
Protein class
Predicted membrane proteins

OverviewNCBI Gene

No narrative summary is available for OR4K3 in this catalog release; identity and structured annotations are shown without generated factual claims.

Canonical amino-acid sequenceUniProt

315 residues, UniProt reviewed canonical sequence.

>Q96R72|OR4K3
     1  MAWSNQSAVT EFILRGLSSS LELQIFYFLF FSIVYAATVL GNLLIVVTIA SEPHLHSPMY
    61  FLLGNLSFID MSLASFATPK MIADFLREHK AISFEGCMTQ MFFLHLLGGA EIVLLISMSF
   121  DRYVAICKPL HYLTIMSRRM CVGLVILSWI VGIFHALSQL AFTVNLPFCG PNEVDSFFCD
   181  LPLVIKLACV DTYILGVFMI STSGMIALVC FILLVISYTI ILVTVRQRSS GGSSKALSTC
   241  SAHFTVVTLF FGPCTFIYVW PFTNFPIDKV LSVFYTIYTP LLNPVIYTVR NKDVKYSMRK
   301  LSSHIFKSRK TDHTP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against OR4K3 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
7
Mean surface accessibility (rSASA)
0.27
Highest tissue expression
0 nTPM

Expression across tissuesHPA

Tissue

  • adipose tissue: 0 nTPM
  • adrenal gland: 0 nTPM
  • appendix: 0 nTPM
  • bone marrow: 0 nTPM
  • breast: 0 nTPM
  • cerebral cortex: 0 nTPM

Single-cell type

  • early spermatids: 0.1 nCPM
  • 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

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

  • pons: 0.2 nTPM
  • amygdala: 0 nTPM
  • basal ganglia: 0 nTPM
  • cerebellum: 0 nTPM
  • cerebral cortex: 0 nTPM
  • choroid plexus: 0 nTPM

OntologyGO

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads OR4K3 as an antibody target. Whether an autoantibody or antibody against OR4K3 could matter depends on whether native OR4K3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

OR4K3 is annotated at the cell surface, where native OR4K3 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 OR4K3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/OR4K3. 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).

© 2026 · Seroatlas, Discover Oregon LLC · Terms of use

Loading the interactive Seroatlas protein explorer...