Gene Information
Gene NameGJB2
OrganismHomo sapiens (Human)
Gene Length226
Protein NamesGap junction beta-2 protein (Connexin-26) (Cx26)
Target NameNA
Target TypeNA
Gene Age645 ( ENSG00000165474 )
Evolutionary StageVertebrata
AlphaFoldDBP29033
Gene CardGJB2
Uniprot IDP29033
PfamPF00029
In ASDno
Allosteric Predictionno (-0.547493574)
Ortholog in AnimalsAlpaca_ GJB2 ( ortholog_one2one )
Dog_ GJB2 ( ortholog_one2one )
GuineaPig_ GJB2 ( ortholog_one2one )
Macaque_ GJB2 ( ortholog_one2one )
Mouse_ Gjb2 ( ortholog_one2one )
Pig_ GJB2 ( ortholog_one2one )
Rat_ Gjb2 ( ortholog_one2one )
Rabbit_ GJB2 ( ortholog_one2one )
OhnologsGJB1, GJA1, GJB7, GJA1P1, GJA4, GJB3, GJB5, GJB4
ParalogsGJB6, GJB1, GJB3, GJB5, GJB4, GJB7, GJA4, GJA1, GJA8, GJA5, GJA3, GJA10, GJA9, GJD2, GJD3, GJC3, GJC2, GJC1, GJD4, GJE1
Tissuekidney, liver, small.intestine, esophagus.mucosa, vagina
Tissue SpecificityNA
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 2ZW3  (X-ray  3.50A  3IZ1  (EM  6.00A  3IZ2  (EM  10.00A  5ER7  (X-ray  3.29A  5ERA  (X-ray  3.80A  5KJ3  (NMR  5KJG  (NMR  6UVR  (EM  4.00A  6UVS  (EM  4.20A  6UVT  (EM  7.50A  7QEO  (EM  2.90A  7QEQ  (EM  1.90A  7QER  (EM  2.20A  7QES  (EM  2.60A  7QET  (EM  2.10A  7QEU  (EM  2.70A  7QEV  (EM  2.90A  7QEW  (EM  2.10A 
DBSNP rs104894408  rs28929485  rs2274084  rs111033190  rs111033190  rs35887622  rs72474224  rs104894407  rs104894413  rs72561723  rs28931594  rs28931594  rs104894412  rs104894404  rs104894410  rs104894403  rs1373154561  rs121912968  rs28931593  rs104894402  rs104894397  rs1555341957  rs111033218  rs104894409  rs104894409  rs1291519904  rs80338945  rs397516871  rs111033299  rs1316789942  rs80338946  rs2274083  rs111033188  rs111033196  rs397516875  rs779018464  rs779018464  rs104894401  rs80338948  rs111033186  rs28931592  rs34988750  rs376898963  rs111033360  rs200104362  rs774518779  rs568612627  rs28931595  rs80338950  rs80338950  rs998045226  rs397516878  rs777236559  rs104894406  rs76838169 
Subcellular location [CC]Cell membrane {ECO:0000269|PubMed:16849369, ECO:0000269|PubMed:17551008, ECO:0000269|PubMed:19340074, ECO:0000269|PubMed:19384972, ECO:0000269|PubMed:21094651, ECO:0000269|PubMed:26753910};
Multi-pass membrane protein {ECO:0000269|PubMed:17551008, ECO:0000269|PubMed:19340074, ECO:0000269|PubMed:21094651, ECO:0000269|PubMed:26753910}. Cell junction, gap junction {ECO:0000269|PubMed:16849369, ECO:0000269|PubMed:17551008, ECO:0000269|PubMed:19340074, ECO:0000269|PubMed:19384972, ECO:0000269|PubMed:21094651, ECO:0000269|PubMed:26753910}. Note=Colocalizes with GJB4 at gap junction plaques in the cochlea. {ECO:0000250|UniProtKB:Q00977}.
Mouse PG classificationLPG
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