GJB1

GJB1 Gene Summary

This gene encodes a member of the gap junction protein family. The gap junction proteins are membrane-spanning proteins that assemble to form gap junction channels that facilitate the transfer of ions and small molecules between cells. According to sequence similarities at the nucleotide and amino acid levels, the gap junction proteins are divided into two categories, alpha and beta. Mutations in this gene cause X-linked Charcot-Marie-Tooth disease, an inherited peripheral neuropathy. Alternatively spliced transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Oct 2008]

Details

Type
Protein Coding
Official Symbol
GJB1
Official Name
gap junction protein beta 1 [Source:HGNC Symbol;Acc:HGNC:4283]
Ensembl ID
ENSG00000169562
Bio databases IDs NCBI: 2705 Ensembl: ENSG00000169562
Aliases gap junction protein beta 1, Charcot-Marie-Tooth neuropathy, X-linked, connexin 32
Synonyms
CMTX,CMTX1,Cnx32,connexin-32,CX32,Cxng,gap junction protein beta 1,gap junction protein, beta 1,gap junction protein β 1,gap junction protein, β 1
Species
Human, Homo sapiens

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 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
  • intracellular loop
  • protein binding
  • identical protein binding
  • Connexin
  • gap-junction forming channel
  • cytoplasmic domain
  • Gap junction channel protein cysteine-rich domain
  • transmembrane domain
  • intracellular domain
  • extracellular loop
  • cytosolic tail domain
  • transporter

Pathways

Biological processes and signaling networks where the GJB1 gene 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.
binds
  • KDR
  • EGFR
  • CLEC7A
  • RTP2
  • APOL3
  • CXCL9
  • STX18
  • MAL
  • TMEM14C
  • TMEM19
disease
  • epithelial cancer
  • neoplasia
  • epithelial neoplasia
  • cancer
  • liver cancer
  • liver neoplasia
  • digestive system cancer
  • abdominal cancer
  • non-small cell lung cancer
  • lung carcinoma process
regulated by
  • OCLN
  • PKA
  • ESR1
  • EGFR
  • decitabine
  • beta-estradiol
  • N-Ac-Leu-Leu-norleucinal
  • TNF
  • TGFA
  • carboxybenzyl-leucyl-leucyl-leucine-vinylsulfone
regulates
  • Ca2+
  • ERK1/2
  • CTNNB1
  • L-glutamic acid
  • luciferase reporter gene
  • synthetic promoter
  • VEGFA
  • DLG1
  • Connexin 32 connexon
  • GJB1
role in cell
  • expression in
  • proliferation
  • apoptosis
  • activation
  • quantity
  • migration
  • formation
  • abnormal morphology
  • assembly
  • size

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
  • Cytoplasm
  • cell surface
  • perinuclear region
  • cellular membrane
  • vesicles
  • cell-cell contacts
  • connexons
  • lateral cell surfaces
  • cytoplasmic face of plasma membrane
  • endoplasmic reticulum membrane
  • basal membrane
  • lateral plasma membrane
  • nodes of Ranvier
  • paranodes
  • Schmidt-Lanterman incisures
  • gap junction plaques
  • gap junctions
  • membrane rafts
  • membrane processes
  • perikaryon
  • dendrites
  • cytoplasmic fraction

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the GJB1 gene, providing context for its role in the cell.

BIOLOGICAL PROCESS

Functions and activities the gene product is involved in
  • transmembrane transport
  • cell-cell signaling
  • nervous system development
  • gap junction assembly
  • purine ribonucleotide transport

CELLULAR COMPONENT

Where in the cell the gene product is active
  • endoplasmic reticulum membrane
  • lateral plasma membrane
  • connexon complex

MOLECULAR FUNCTION

What the gene product does at the molecular level
  • identical protein binding
  • 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.