Seroatlas · Human Serome Atlas

MATN4

Matrilin-4

Also known as: MATN4_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
O95460
Gene
MATN4
Ensembl
ENSG00000124159
Chromosome
20
Canonical length
622 aa
Protein class
Plasma proteins, Predicted secreted proteins
Secretome location
Secreted to extracellular matrix

OverviewNCBI Gene

This gene encodes a member of von Willebrand factor A domain-containing protein family. The proteins of this family are thought to be involved in the formation of filamentous networks in the extracellular matrices of various tissues. This family member is thought to be play a role in reorganizing and regenerating the corneal matrix in granular and lattice type I dystrophies. It may also be involved in wound healing in the dentin-pulp complex. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]

Canonical amino-acid sequenceUniProt

622 residues, UniProt reviewed canonical sequence.

>O95460|MATN4
     1  MRGLLCWPVL LLLLQPWETQ LQLTGPRCHT GPLDLVFVID SSRSVRPFEF ETMRQFLMGL
    61  LRGLNVGPNA TRVGVIQYSS QVQSVFPLRA FSRREDMERA IRDLVPLAQG TMTGLAIQYA
   121  MNVAFSVAEG ARPPEERVPR VAVIVTDGRP QDRVAEVAAQ ARARGIEIYA VGVQRADVGS
   181  LRAMASPPLD EHVFLVESFD LIQEFGLQFQ SRLCGKDQCA EGGHGCQHQC VNAWAMFHCT
   241  CNPGYKLAAD NKSCLAIDLC AEGTHGCEHH CVNSPGSYFC HCQVGFVLQQ DQRSCRAIDY
   301  CSFGNHSCQH ECVSTPGGPR CHCREGHDLQ PDGRSCQVRD LCNGVDHGCE FQCVSEGLSY
   361  RCLCPEGRQL QADGKSCNRC REGHVDLVLL VDGSKSVRPQ NFELVKRFVN QIVDFLDVSP
   421  EGTRVGLVQF SSRVRTEFPL GRYGTAAEVK QAVLAVEYME RGTMTGLALR HMVEHSFSEA
   481  QGARPRALNV PRVGLVFTDG RSQDDISVWA ARAKEEGIVM YAVGVGKAVE AELREIASEP
   541  AELHVSYAPD FGTMTHLLEN LRGSICPEEG ISAGTELRSP CECESLVEFQ GRTLGALESL
   601  TLNLAQLTAR LEDLENQLAN QK

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MATN4 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
Secreted
Secreted
Yes
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.32
Highest tissue expression
23 nTPM

Expression across tissuesHPA

Tissue

  • pancreas: 23 nTPM
  • skin: 2.7 nTPM
  • breast: 1.7 nTPM
  • testis: 1.1 nTPM
  • cervix: 1 nTPM
  • salivary gland: 0.8 nTPM

Single-cell type

  • fibroblasts: 6.7 nCPM
  • salivary acinar cells: 5.8 nCPM
  • salivary basal cells: 5.8 nCPM
  • differentiating spermatogonia: 5.4 nCPM
  • lacrimal acinar cells: 5.4 nCPM
  • basal keratinocytes: 4.7 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

  • cerebral cortex: 0.2 nTPM
  • white matter: 0.2 nTPM
  • amygdala: 0.1 nTPM
  • basal ganglia: 0.1 nTPM
  • choroid plexus: 0.1 nTPM
  • hippocampal formation: 0.1 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about MATN4.

Disease | GeneticClinVar

1 pathogenic / likely-pathogenic of 113 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)
1.02
gnomAD pLI
0
gnomAD missense Z
1.12
DepMap mean gene effect
-0.05
DepMap dependency class
selective

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 MATN4 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 MATN4 as an antibody target. Whether an autoantibody or antibody against MATN4 could matter depends on whether native MATN4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MATN4 is annotated as secreted, so native MATN4 circulates and is directly accessible to antibodies. Secreted and cell-surface proteins are the autoantibody targets most likely to act like drugs, blocking or depleting the native protein.

Annotation status

The present source text does not explicitly label MATN4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MATN4. 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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