Seroatlas · Human Serome Atlas

NECTIN4

Nectin-4

Also known as: LNIR, NECT4_HUMAN, nectin-4, PRR4, PVRL4

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

Protein identityUniProt · HPA

UniProt accession
Q96NY8
Gene
NECTIN4
Ensembl
ENSG00000143217
Chromosome
1
Canonical length
510 aa
Protein class
Disease related genes, Human disease related genes, Predicted membrane proteins, Predicted secreted proteins
Subcellular location
Plasma membrane
Secretome location
Secreted in other tissues

OverviewNCBI Gene

This gene encodes a member of the nectin family. The encoded protein contains two immunoglobulin-like (Ig-like) C2-type domains and one Ig-like V-type domain. It is involved in cell adhesion through trans-homophilic and -heterophilic interactions. It is a single-pass type I membrane protein. The soluble form is produced by proteolytic cleavage at the cell surface by the metalloproteinase ADAM17/TACE. The secreted form is found in both breast tumor cell lines and breast tumor patients. Mutations in this gene are the cause of ectodermal dysplasia-syndactyly syndrome type 1, an autosomal recessive disorder. Alternatively spliced transcript variants have been found but the full-length nature of the variant has not been determined.[provided by RefSeq, Jan 2011]

Canonical amino-acid sequenceUniProt

510 residues, UniProt reviewed canonical sequence.

>Q96NY8|NECTIN4
     1  MPLSLGAEMW GPEAWLLLLL LLASFTGRCP AGELETSDVV TVVLGQDAKL PCFYRGDSGE
    61  QVGQVAWARV DAGEGAQELA LLHSKYGLHV SPAYEGRVEQ PPPPRNPLDG SVLLRNAVQA
   121  DEGEYECRVS TFPAGSFQAR LRLRVLVPPL PSLNPGPALE EGQGLTLAAS CTAEGSPAPS
   181  VTWDTEVKGT TSSRSFKHSR SAAVTSEFHL VPSRSMNGQP LTCVVSHPGL LQDQRITHIL
   241  HVSFLAEASV RGLEDQNLWH IGREGAMLKC LSEGQPPPSY NWTRLDGPLP SGVRVDGDTL
   301  GFPPLTTEHS GIYVCHVSNE FSSRDSQVTV DVLDPQEDSG KQVDLVSASV VVVGVIAALL
   361  FCLLVVVVVL MSRYHRRKAQ QMTQKYEEEL TLTRENSIRR LHSHHTDPRS QPEESVGLRA
   421  EGHPDSLKDN SSCSVMSEEP EGRSYSTLTT VREIETQTEL LSPGSGRAEE EEDQDEGIKQ
   481  AMNHFVQENG TLRAKPTGNG IYINGRGHLV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against NECTIN4 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)
0.43
Highest tissue expression
110 nTPM

Expression across tissuesHPA

Tissue

  • skin: 110 nTPM
  • esophagus: 96 nTPM
  • vagina: 56 nTPM
  • cervix: 41 nTPM
  • salivary gland: 32 nTPM
  • urinary bladder: 16 nTPM

Single-cell type

  • esophageal apical cells: 744 nCPM
  • syncytiotrophoblasts: 572 nCPM
  • esophageal suprabasal cells: 312 nCPM
  • ocular epithelial cells: 247 nCPM
  • urothelial cells: 241 nCPM
  • suprabasal keratinocytes: 233 nCPM

Immune cell

  • neutrophil: 0.8 nTPM
  • basophil: 0.4 nTPM
  • eosinophil: 0.3 nTPM
  • classical monocyte: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM

Brain region

  • thalamus: 1.5 nTPM
  • cerebellum: 1.3 nTPM
  • white matter: 1.3 nTPM
  • cerebral cortex: 1.2 nTPM
  • hippocampal formation: 1.1 nTPM
  • hypothalamus: 1.1 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about NECTIN4.

Disease | AllUniProt

Conditions NECTIN4 is implicated in, by any mechanism.

Disease | GeneticClinVar

12 pathogenic / likely-pathogenic of 93 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
1.72
gnomAD pLI
0.04
DepMap mean gene effect
-0.08
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 9% 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 NECTIN4 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 NECTIN4 as an antibody target. Whether an autoantibody or antibody against NECTIN4 could matter depends on whether native NECTIN4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

NECTIN4 is annotated at the cell surface, where native NECTIN4 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 NECTIN4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/NECTIN4. 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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