GJB3 Gene Summary [Human]

This gene is a member of the connexin gene family. The encoded protein is a component of gap junctions, which are composed of arrays of intercellular channels that provide a route for the diffusion of low molecular weight materials from cell to cell. Mutations in this gene can cause non-syndromic deafness or erythrokeratodermia variabilis, a skin disorder. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

Details

Type
Protein Coding
Official Symbol
GJB3
Official Name
gap junction protein beta 3 [Source:HGNC Symbol;Acc:HGNC:4285]
Ensembl ID
ENSG00000188910
Bio databases IDs NCBI: 2707 Ensembl: ENSG00000188910
Aliases gap junction protein beta 3, connexin 31
Synonyms Cnx31, CX31, CXB3, Cxnc, D4Wsu144e, DFNA2, DFNA2B, EKV, EKVP1, Gap junction membrane channel protein beta3, Gap Junction Protein Beta 3, gap junction protein, beta 3, Gap Junction Protein β 3, gap junction protein, β 3
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human GJB3 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Connexin homologues
  • Gap junction channel protein cysteine-rich domain
  • protein binding
  • transporter
  • Connexin

Pathways

Biological processes and signaling networks where the GJB3 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • GJB2/GJB3 digenic deafness
  • erythrokeratodermia variabilis et progressiva 1
  • autosomal dominant deafness with peripheral neuropathy
  • autosomal dominant nonsyndromic deafness type 2B
  • sensorineural hearing loss
  • erythrokeratodermia variabilis
  • metastasis
  • familial nonsyndromic hearing impairment
  • autosomal recessive deafness type 1A
  • nonsyndromic hearing impairment
regulated by
role in cell
  • cellular infiltration by

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • cell junction
  • intracellular membrane-bounded organelle
  • Cytoplasm
  • cellular membrane
  • intercellular junctions
  • gap junctions

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human GJB3 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • transmembrane transport
  • in utero embryonic development
  • cellular response to retinoic acid
  • spermatogenesis
  • cell-cell signaling
  • placenta development
  • skin development

Cellular Component

Where in the cell the gene product is active
  • gap junction
  • connexon complex
  • cytoplasm
  • intracellular membrane-bounded organelle
  • cell junction

Molecular Function

What the gene product does at the molecular level
  • protein binding
  • gap junction channel activity

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.