Selected-GenAtlas references SOURCE GeneCards NCBI Gene Swiss-Prot Orphanet Ensembl
HGNC UniGene Nucleotide OMIM UCSC
Home Page
Symbol GJB6 contributors: mct - updated : 06-01-2011
HGNC name gap junction protein, beta 6, 30kDa
HGNC id 4288
Corresponding disease
DFNA3 neurosensory deafness 3
DFNB1 neurosensory deafness 1
ED2 ectodermal dysplasia 2, hidrotic
KID2 keratitis-ichthyosis-deafness syndrome 2
Location 13q12.11      Physical location : 20.796.101 - 20.806.534
Synonym name
  • gap junction protein, beta 6 (connexin 30)
  • connexin 30
  • Synonym symbol(s) CX30, EDH, HED
    TYPE functioning gene
    STRUCTURE 10.43 kb     5 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    regulatory sequence Promoter
    text structure a basal promoter sequence active in a human keratinocyte cell line which responds to the activation of the EGF receptor
    MAPPING cloned Y linked N status confirmed
    Map cen - D13S141 - D13S175 - D13S115 - D13S292 - D13S283 - GJB6 - GJB2 - D13S809 - D13S243 - qter
    Physical map
    LOC387900 13 similar to FSHPRH1 protein LOC221136 13q12.11 similar to Mucin 5B precursor (Mucin 5 subtype B, tracheobronchial) (High molecular weight salivary mucin MG1) (Sublingual gland mucin) LOC390374 13 similar to hypothetical protein FLJ20297 TUBA2 13q11.2 tubulin, alpha 2 LOC390375 13 similar to paraspeckle protein 1 alpha isoform MRPL3P1 13q12.11 mitochondrial ribosomal protein L3 pseudogene 1 LOC221140 13q12.11 hypothetical LOC221140 LOC144848 13q12.11 similar to Vault poly(ADP-ribose) polymerase (VPARP) (193-kDa vault protein) (PARP-related/IalphaI-related H5/proline-rich) (PH5P) LOC390376 13 similar to Mitochondrial ornithine transporter 1 (Solute carrier family 25, member 15) TPIP 13q12.11 TPTE and PTEN homologous inositol lipid phosphatase HCP32 13q12.11 cytochrome c, somatic pseudogene ESRRAP 13q12.1 estrogen-related receptor alpha pseudogene LOC341757 13q12.11 similar to H63 breast cancer expressed gene isoform a; gene associated with HER-2/neu overexpression HSMPP8 13q12.11 M-phase phosphoprotein, mpp8 PSPC1 13q12-11 paraspeckle component 1 LOC390377 13 similar to Alpha-N-acetyl-neuraminyl-2,3-beta-galactosyl-1,3-N-acetylgalactosaminide alpha-2,6-sialyltransferase (NeuAc-alpha-2,3-Gal-beta-1,3-GalNAc-alpha-2,6-sialyltransferase) (ST6GalNAc IV) (Sialyltransferase 7D) (Sialyltransfer ZNF237 13q11-q12 zinc finger protein 237 LOC387901 13 LOC387901 ZNF198 13q11-q12 zinc finger protein 198 LOC144845 13q12.11 hypothetical protein BC008631 GJA3 13q11 gap junction protein, alpha 3, 46kDa (connexin 46) LOC390378 13 similar to peptidylprolyl isomerase A GJB2 13q11-q12.1 gap junction protein, beta 2, 26kDa (connexin 26) GJB6 13q12.1 gap junction protein, beta 6 (connexin 30) CRYL1 13q11 crystallin, lambda 1 TG737 13q12.1 crystallin, lambda 1 IL17D 13q12.11 interleukin 17D LOC221143 13q12.11 hypothetical protein LOC221143 XPO4 13q11 exportin 4 LOC390379 13 similar to Heterogeneous nuclear ribonucleoprotein A1 (Helix-destabilizing protein) (Single-strand binding protein) (hnRNP core protein A1) (HDP) LOC387902 13 similar to protein 40kD LATS2 13q11-q12 LATS, large tumor suppressor, homolog 2 (Drosophila) LOC338870 13q12.11 similar to ribosomal protein S12 LOC390380 13 similar to chromosome 9 open reading frame 12; 1,3,4,5,6-pentakisphosphate 2-kinase SAP18 13q12.11 sin3-associated polypeptide, 18kDa C13orf3 13q11 chromosome 13 open reading frame 3 MRP63 13p11.1-q11 mitochondrial ribosomal protein 63 LOC387903 13 LOC387903 ESTRRA 13q12.11 estrogen-related receptor alpha pseudogene
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    3 - 2110 - 261 - -
    3 - 1944 - 261 - -
    4 - 2068 - 261 - -
    5 - 2178 - 261 - -
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Hearing/Equilibriumearinnercochlea   Homo sapiensAdult
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    SystemCellPubmedSpeciesStageRna symbol
    Skin/Tegumentepidermal secretory cell
    cell lineage
    cell lines
    at STAGE
    physiological period fetal
    Text cochlea
  • four putative membrane spanning alpha helices (TM4), separating the N terminal intracellular domain
  • two extracellular loops
  • a C terminal intracellular domain
  • mono polymer hexamer
    interspecies homolog to murine Cx30/Gjb6
    homolog to C.elegans ZK1307.1
    intraspecies homolog to GJB2
  • beta-type (group I) subfamily
  • connexin family
  • beta-type (group I) subfamily
  • CATEGORY transport channel
    SUBCELLULAR LOCALIZATION     plasma membrane,junction,gap
    basic FUNCTION
  • having a role in intercellular transport and communication
  • required both for producing endocochlear potential and for the survival of hair cells in the mature cochlea
  • involved in the paracrine signaling within the epidermis
  • play an important role in cell-to-cell communication
  • play a crucial role in inner ear Ca2+ signaling: as hemichannels, they promote ATP release, sustaining long-range intercellular Ca2+ signals propagation
  • both GJB2 and GJB6 play essential roles in normal cochlear functions
  • GJB2, and GJB6 have dramatically different temporal and cellular expression patterns during early postnatal cochlear development
  • functional role of GJC2 and GJB6 for interastrocytic, interoligodendrocytic, and panglial coupling, and both connexins are required for maintenance of myelin
  • CELLULAR PROCESS cell communication
    PHYSIOLOGICAL PROCESS cell to cell transport
    signaling sensory transduction/hearing
    a component
  • component of connexons composed of a hexamer of connexins
    small molecule
  • interacting with GJB2
  • GJB2 plays an essential role in the development of the auditory sensory epithelium and its unique developmental functions required for normal hearing is not replaceable by GJB6
  • cell & other
    Other regulated by a Ca2+-dependent control in the expression of inner ear connexins implicated in hereditary deafness GJB2 and GJB6
    corresponding disease(s) DFNA3 , ED2 , DFNB1 , KID2
    related resource Hereditary Hearing Loss Homepage
    The Connexin-deafness homepage
    Variant & Polymorphism
    Candidate gene
    Therapy target