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Aliases for GJB4 Gene

Aliases for GJB4 Gene

  • Gap Junction Protein, Beta 4, 30.3kDa 2 3
  • Connexin 30.3 2 3
  • Connexin-30.3 3 4
  • CX30.3 3 4
  • Gap Junction Protein, Beta 4 (Connexin 30.3) 2
  • Gap Junction Protein, Beta 4 2
  • EKV 3

External Ids for GJB4 Gene

Previous GeneCards Identifiers for GJB4 Gene

  • GC01U990071
  • GC01P034281
  • GC01P034651
  • GC00M9U0070
  • GC01P034894
  • GC01P034997
  • GC01P034999
  • GC01P035225
  • GC01P033342

Summaries for GJB4 Gene

Entrez Gene Summary for GJB4 Gene

  • This gene encodes a transmembrane connexin protein that is a component of gap junctions. Mutations in this gene have been associated with erythrokeratodermia variabilis, progressive symmetric erythrokeratoderma and hearing impairment. [provided by RefSeq, Dec 2009]

GeneCards Summary for GJB4 Gene

GJB4 (Gap Junction Protein, Beta 4, 30.3kDa) is a Protein Coding gene. Diseases associated with GJB4 include gjb4-related erythrokeratodermia variabilis and erythrokeratodermia variabilis et progressiva. Among its related pathways are Vesicle-mediated transport and Myometrial Relaxation and Contraction Pathways. An important paralog of this gene is GJB3.

UniProtKB/Swiss-Prot for GJB4 Gene

  • One gap junction consists of a cluster of closely packed pairs of transmembrane channels, the connexons, through which materials of low MW diffuse from one cell to a neighboring cell

Tocris Summary for GJB4 Gene

  • Gap channels (gap junctions) are specialized cell-cell contacts that provide direct intracellular communication. They allow passive diffusion of molecules up to 1 kDa, including nutrients, metabolites (glucose), ions (K+, Ca2+) and second messengers (IP3, cAMP).

Gene Wiki entry for GJB4 Gene

No data available for PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for GJB4 Gene

Genomics for GJB4 Gene

Regulatory Elements for GJB4 Gene

Genomic Location for GJB4 Gene

Chromosome:
1
Start:
34,759,741 bp from pter
End:
34,763,724 bp from pter
Size:
3,984 bases
Orientation:
Plus strand

Genomic View for GJB4 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for GJB4 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for GJB4 Gene

Proteins for GJB4 Gene

  • Protein details for GJB4 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Q9NTQ9-CXB4_HUMAN
    Recommended name:
    Gap junction beta-4 protein
    Protein Accession:
    Q9NTQ9
    Secondary Accessions:
    • B3KQ82

    Protein attributes for GJB4 Gene

    Size:
    266 amino acids
    Molecular mass:
    30419 Da
    Quaternary structure:
    • A connexon is composed of a hexamer of connexins

neXtProt entry for GJB4 Gene

Proteomics data for GJB4 Gene at MOPED

Post-translational modifications for GJB4 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for GJB4 Gene

ENSEMBL proteins:
REFSEQ proteins:

No data available for DME Specific Peptides for GJB4 Gene

Domains & Families for GJB4 Gene

Gene Families for GJB4 Gene

Suggested Antigen Peptide Sequences for GJB4 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry

Q9NTQ9

UniProtKB/Swiss-Prot:

CXB4_HUMAN :
  • Belongs to the connexin family. Beta-type (group I) subfamily.
Family:
  • Belongs to the connexin family. Beta-type (group I) subfamily.
genes like me logo Genes that share domains with GJB4: view

Function for GJB4 Gene

Molecular function for GJB4 Gene

UniProtKB/Swiss-Prot Function:
One gap junction consists of a cluster of closely packed pairs of transmembrane channels, the connexons, through which materials of low MW diffuse from one cell to a neighboring cell

Phenotypes for GJB4 Gene

MGI mutant phenotypes for GJB4:
inferred from 1 alleles
GenomeRNAi human phenotypes for GJB4:
genes like me logo Genes that share phenotypes with GJB4: view

miRNA for GJB4 Gene

miRTarBase miRNAs that target GJB4

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for GJB4

In Situ Assay Products

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Gene Ontology (GO) - Molecular Function , Animal Models , Transcription Factor Targets and HOMER Transcription for GJB4 Gene

Localization for GJB4 Gene

Subcellular locations from UniProtKB/Swiss-Prot for GJB4 Gene

Cell membrane; Multi-pass membrane protein. Cell junction, gap junction.

Subcellular locations from

COMPARTMENTS
Jensen Localization Image for GJB4 Gene COMPARTMENTS Subcellular localization image for GJB4 gene
Compartment Confidence
plasma membrane 5

Gene Ontology (GO) - Cellular Components for GJB4 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005922 connexon complex IEA --
GO:0016021 integral component of membrane IEA --
genes like me logo Genes that share ontologies with GJB4: view

Pathways & Interactions for GJB4 Gene

genes like me logo Genes that share pathways with GJB4: view

Pathways by source for GJB4 Gene

PCR Array Products

  • Pathway & Disease-focused RT² Profiler PCR Arrays

Interacting Proteins for GJB4 Gene

Gene Ontology (GO) - Biological Process for GJB4 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0007154 cell communication IEA --
GO:0007608 sensory perception of smell IEA --
GO:0042048 olfactory behavior IEA --
genes like me logo Genes that share ontologies with GJB4: view

No data available for SIGNOR curated interactions for GJB4 Gene

Drugs & Compounds for GJB4 Gene

(9) Drugs for GJB4 Gene - From: IUPHAR, DGIdb, and Tocris

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Carbenoxolone Experimental Pharma Inhibitor 0
Flufenamic Acid Experimental Pharma Channel blocker 0
Ca<sup>2+</sup> Pharma Antagonist 0
octanol Pharma Inhibitor 0
10Panx Pharma Panx-1 mimetic inhibitor, Panx-1 mimetic inhibitory peptide; blocks pannexin-1 gap junctions 0
genes like me logo Genes that share compounds with GJB4: view

Transcripts for GJB4 Gene

mRNA/cDNA for GJB4 Gene

(2) REFSEQ mRNAs :
(2) Additional mRNA sequences :
(6) Selected AceView cDNA sequences:
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for GJB4 Gene

Gap junction protein, beta 4, 30.3kDa:
Representative Sequences:

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for GJB4

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for GJB4 Gene

No ASD Table

Relevant External Links for GJB4 Gene

GeneLoc Exon Structure for
GJB4
ECgene alternative splicing isoforms for
GJB4

Expression for GJB4 Gene

mRNA expression in normal human tissues for GJB4 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for GJB4 Gene

This gene is overexpressed in Skin - Sun Exposed (Lower leg) (x23.1) and Skin - Not Sun Exposed (Suprapubic) (x21.8).

SOURCE GeneReport for Unigene cluster for GJB4 Gene Hs.351203

genes like me logo Genes that share expression patterns with GJB4: view

Primer Products

In Situ Assay Products

No data available for Protein differential expression in normal tissues , Protein expression , mRNA Expression by UniProt/SwissProt and Protein tissue co-expression partners for GJB4 Gene

Orthologs for GJB4 Gene

This gene was present in the common ancestor of chordates.

Orthologs for GJB4 Gene

Organism Taxonomy Gene Similarity Type Details
cow
(Bos Taurus)
Mammalia GJB4 35
  • 85.84 (n)
  • 82.71 (a)
GJB4 36
  • 83 (a)
OneToOne
dog
(Canis familiaris)
Mammalia GJB4 35
  • 86.72 (n)
  • 88.35 (a)
GJB4 36
  • 88 (a)
OneToOne
mouse
(Mus musculus)
Mammalia Gjb4 35
  • 83.21 (n)
  • 86.47 (a)
Gjb4 16
Gjb4 36
  • 86 (a)
OneToOne
chimpanzee
(Pan troglodytes)
Mammalia GJB4 35
  • 98.5 (n)
  • 97.74 (a)
GJB4 36
  • 98 (a)
OneToOne
rat
(Rattus norvegicus)
Mammalia Gjb4 35
  • 84.65 (n)
  • 86.79 (a)
oppossum
(Monodelphis domestica)
Mammalia GJB4 36
  • 72 (a)
OneToOne
platypus
(Ornithorhynchus anatinus)
Mammalia GJB4 36
  • 68 (a)
OneToOne
tropical clawed frog
(Silurana tropicalis)
Amphibia LOC100486331 35
  • 64.19 (n)
  • 64.19 (a)
zebrafish
(Danio rerio)
Actinopterygii cx34.4 35
  • 63.72 (n)
  • 63.05 (a)
cx28.6 36
  • 55 (a)
ManyToMany
cx30.9 36
  • 50 (a)
ManyToMany
cx34.4 36
  • 53 (a)
ManyToMany
Species with no ortholog for GJB4:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for GJB4 Gene

ENSEMBL:
Gene Tree for GJB4 (if available)
TreeFam:
Gene Tree for GJB4 (if available)

Paralogs for GJB4 Gene

Paralogs for GJB4 Gene

(17) SIMAP similar genes for GJB4 Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with GJB4: view

Variants for GJB4 Gene

Sequence variations from dbSNP and Humsavar for GJB4 Gene

SNP ID Clin Chr 01 pos Sequence Context AA Info Type MAF
VAR_010206 Erythrokeratodermia variabilis (EKV)
VAR_015088 -
VAR_015089 -
VAR_015090 -
VAR_015091 -

Structural Variations from Database of Genomic Variants (DGV) for GJB4 Gene

Variant ID Type Subtype PubMed ID
nsv870700 CNV Loss 21882294

Variation tolerance for GJB4 Gene

Residual Variation Intolerance Score: 98.09% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 7.85; 83.61% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for GJB4 Gene

HapMap Linkage Disequilibrium report
GJB4
Human Gene Mutation Database (HGMD)
GJB4

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for GJB4 Gene

Disorders for GJB4 Gene

MalaCards: The human disease database

(9) MalaCards diseases for GJB4 Gene - From: OMIM, ClinVar, GeneTests, Orphanet, Swiss-Prot, DISEASES, NovoSeek, and GeneCards

Disorder Aliases PubMed IDs
gjb4-related erythrokeratodermia variabilis
  • gjb4-related ekv
erythrokeratodermia variabilis et progressiva
  • erythrokeratodermia variabilis with erythema gyratum repens
hypotrichosis-deafness syndrome
kid syndrome
  • keratitis, ichthyosis, and deafness syndrome
bart-pumphrey syndrome
  • knuckle pads, leukonychia, and sensorineural deafness
- elite association
Search GJB4 in MalaCards View complete list of genes associated with diseases

UniProtKB/Swiss-Prot

CXB4_HUMAN
  • Erythrokeratodermia variabilis (EKV) [MIM:133200]: A genodermatosis characterized by the appearance of two independent skin lesions: transient figurate erythematous patches and hyperkeratosis that is usually localized but occasionally occurs in its generalized form. Clinical presentation varies significantly within a family and from one family to another. Palmoplantar keratoderma is present in around 50% of cases. {ECO:0000269 PubMed:11017804}. Note=The disease is caused by mutations affecting the gene represented in this entry.

Relevant External Links for GJB4

Genetic Association Database (GAD)
GJB4
Human Genome Epidemiology (HuGE) Navigator
GJB4
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
GJB4
genes like me logo Genes that share disorders with GJB4: view

No data available for Genatlas for GJB4 Gene

Publications for GJB4 Gene

  1. The missense mutation G12D in connexin30.3 can cause both erythrokeratodermia variabilis of Mendes da Costa and progressive symmetric erythrokeratodermia of Gottron. (PMID: 19291775) van Steensel M.A. … van Geel M. (Am. J. Med. Genet. A 2009) 23 67
  2. Connexin mutations in Brazilian patients with skin disorders with or without hearing loss. (PMID: 19283857) Alexandrino F. … Sartorato E.L. (Am. J. Med. Genet. A 2009) 23 67
  3. Novel mutation p.Gly59Arg in GJB6 encoding connexin 30 underlies palmoplantar keratoderma with pseudoainhum, knuckle pads and hearing loss. (PMID: 19416251) Nemoto-Hasebe I. … Shimizu H. (Br. J. Dermatol. 2009) 23 67
  4. Erythrokeratoderma variabilis. (PMID: 18627749) Hunzeker C.M. … Levis W.R. (Dermatol. Online J. 2008) 23 67
  5. The connexin31 F137L mutant mouse as a model for the human skin disease erythrokeratodermia variabilis (EKV). (PMID: 17446259) Schnichels M. … Willecke K. (Hum. Mol. Genet. 2007) 23 67

Products for GJB4 Gene

Sources for GJB4 Gene

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