Seroatlas · Human Serome Atlas

ECM2

Extracellular matrix protein 2

Also known as: ECM2_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
O94769
Gene
ECM2
Ensembl
ENSG00000106823
Chromosome
9
Canonical length
699 aa
Protein class
Plasma proteins, Predicted secreted proteins
Subcellular location
Nucleoplasm,Nucleoli fibrillar center,Endoplasmic reticulum,Plasma membrane
Secretome location
Secreted to extracellular matrix

OverviewNCBI Gene

ECM2 encodes extracellular matrix protein 2, so named because it shares extensive similarity with known extracelluar matrix proteins. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2010]

Canonical amino-acid sequenceUniProt

699 residues, UniProt reviewed canonical sequence.

>O94769|ECM2
     1  MKIAVLFCFF LLIIFQTDFG KNEEIPRKQR RKIYHRRLRK SSTSHKHRSN RQLGIQQTTV
    61  FTPVARLPIV NFDYSMEEKF ESFSSFPGVE SSYNVLPGKK GHCLVKGITM YNKAVWSPEP
   121  CTTCLCSDGR VLCDETMCHP QRCPQTVIPE GECCPVCSAT VSYSLLSGIA LNDRNEFSGD
   181  SSEQREPTNL LHKQLPPPQV GMDRIVRKEA LQSEEDEEVK EEDTEQKRET PESRNQGQLY
   241  SEGDSRGGDR KQRPGEERRL AHQQQRQGRE EEEDEEEEGE EGEEDEEDEE DPVRGDMFRM
   301  PSRSPLPAPP RGTLRLPSGC SLSYRTISCI NAMLTQIPPL TAPQITSLEL TGNSIASIPD
   361  EAFNGLPNLE RLDLSKNNIT SSGIGPKAFK LLKKLMRLNM DGNNLIQIPS QLPSTLEELK
   421  VNENNLQAID EESLSDLNQL VTLELEGNNL SEANVNPLAF KPLKSLAYLR LGKNKFRIIP
   481  QGLPGSIEEL YLENNQIEEI TEICFNHTRK INVIVLRYNK IEENRIAPLA WINQENLESI
   541  DLSYNKLYHV PSYLPKSLLH LVLLGNQIER IPGYVFGHME PGLEYLYLSF NKLADDGMDR
   601  VSFYGAYHSL RELFLDHNDL KSIPPGIQEM KALHFLRLNN NKIRNILPEE ICNAEEDDDS
   661  NLEHLHLENN YIKIREIPSY TFSCIRSYSS IVLKPQNIK

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ECM2 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)
0.41
Highest tissue expression
117 nTPM

Expression across tissuesHPA

Tissue

  • adipose tissue: 117 nTPM
  • ovary: 110 nTPM
  • liver: 77 nTPM
  • blood vessel: 63 nTPM
  • cervix: 42 nTPM
  • endometrium: 39 nTPM

Single-cell type

  • leydig cells: 225 nCPM
  • adipocytes: 218 nCPM
  • fibro-adipogenic progenitors: 169 nCPM
  • epicardial cells: 166 nCPM
  • ependymal cells: 131 nCPM
  • bergmann glia: 111 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: 26 nTPM
  • white matter: 25 nTPM
  • midbrain: 22 nTPM
  • choroid plexus: 18 nTPM
  • thalamus: 18 nTPM
  • cerebellum: 13 nTPM

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)
0.92
gnomAD pLI
0
gnomAD missense Z
0.7
DepMap mean gene effect
0.1
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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 ECM2 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 ECM2 as an antibody target. Whether an autoantibody or antibody against ECM2 could matter depends on whether native ECM2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ECM2 is annotated as secreted, so native ECM2 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 ECM2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ECM2. 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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