Seroatlas · Human Serome Atlas

CCN5

CCN family member 5

Also known as: CCN5_HUMAN, CT58, CTGF-L, WISP-2, WISP2

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

Protein identityUniProt · HPA

UniProt accession
O76076
Gene
CCN5
Ensembl
ENSG00000064205
Chromosome
20
Canonical length
250 aa
Protein class
Plasma proteins, Predicted secreted proteins
Subcellular location
Plasma membrane
Secretome location
Secreted to extracellular matrix

OverviewNCBI Gene

This gene encodes a member of the WNT1 inducible signaling pathway (WISP) protein subfamily, which belongs to the connective tissue growth factor (CTGF) family. WNT1 is a member of a family of cysteine-rich, glycosylated signaling proteins that mediate diverse developmental processes. The CTGF family members are characterized by four conserved cysteine-rich domains: insulin-like growth factor-binding domain, von Willebrand factor type C module, thrombospondin domain and C-terminal cystine knot-like (CT) domain. The encoded protein lacks the CT domain which is implicated in dimerization and heparin binding. It is 72% identical to the mouse protein at the amino acid level. This gene may be downstream in the WNT1 signaling pathway that is relevant to malignant transformation. Its expression in colon tumors is reduced while the other two WISP members are overexpressed in colon tumors. It is expressed at high levels in bone tissue, and may play an important role in modulating bone turnover. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

250 residues, UniProt reviewed canonical sequence.

>O76076|CCN5
     1  MRGTPKTHLL AFSLLCLLSK VRTQLCPTPC TCPWPPPRCP LGVPLVLDGC GCCRVCARRL
    61  GEPCDQLHVC DASQGLVCQP GAGPGGRGAL CLLAEDDSSC EVNGRLYREG ETFQPHCSIR
   121  CRCEDGGFTC VPLCSEDVRL PSWDCPHPRR VEVLGKCCPE WVCGQGGGLG TQPLPAQGPQ
   181  FSGLVSSLPP GVPCPEWSTA WGPCSTTCGL GMATRVSNQN RFCRLETQRR LCLSRPCPPS
   241  RGRSPQNSAF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against CCN5 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)
0.48
Highest tissue expression
904 nTPM

Expression across tissuesHPA

Tissue

  • blood vessel: 904 nTPM
  • adipose tissue: 423 nTPM
  • cervix: 366 nTPM
  • skin: 212 nTPM
  • heart muscle: 175 nTPM
  • lung: 148 nTPM

Single-cell type

  • leydig cells: 313 nCPM
  • fibroblasts: 292 nCPM
  • schwann cells: 202 nCPM
  • vascular smooth muscle cells: 188 nCPM
  • hepatic stellate cells: 187 nCPM
  • ovarian stromal cells: 169 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: 2.9 nTPM
  • basal ganglia: 2.8 nTPM
  • amygdala: 2.3 nTPM
  • white matter: 2 nTPM
  • hippocampal formation: 1.8 nTPM
  • midbrain: 1.6 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)
1.46
gnomAD pLI
0
DepMap mean gene effect
0.1
DepMap dependency class
none

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

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads CCN5 as an antibody target. Whether an autoantibody or antibody against CCN5 could matter depends on whether native CCN5 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

CCN5 is annotated as secreted, so native CCN5 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 CCN5 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/CCN5. 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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