|A service of the U.S. National Library of Medicine®|
On this page:
Reviewed February 2016
What is the official name of the GJB6 gene?
The official name of this gene is “gap junction protein beta 6.”
GJB6 is the gene's official symbol. The GJB6 gene is also known by other names, listed below.
Read more about gene names and symbols on the About page.
What is the normal function of the GJB6 gene?
The GJB6 gene provides instructions for making a protein called gap junction beta 6, more commonly known as connexin 30. Connexin 30 is a member of the connexin protein family. Connexin proteins form channels called gap junctions that permit the transport of nutrients, charged atoms (ions), and signaling molecules between adjoining cells. The size of the gap junction and the types of particles that move through it are determined by the particular connexin proteins that make up the channel. Gap junctions made with connexin 30 transport potassium ions and certain small molecules.
Connexin 30 is found in several different tissues throughout the body, including the brain, inner ear, skin (especially the palms of the hands and soles of the feet), hair follicles, and nail beds. Because of its presence in the inner ear, researchers are interested in this protein's role in hearing. Hearing requires the conversion of sound waves to electrical nerve impulses. This conversion involves many processes, including maintenance of the proper level of potassium ions in the inner ear. Some studies indicate that gap junctions made with connexin 30 help to maintain the correct level of potassium ions.
Does the GJB6 gene share characteristics with other genes?
The GJB6 gene belongs to a family of genes called GJ (gap junction proteins (connexins)).
A gene family is a group of genes that share important characteristics. Classifying individual genes into families helps researchers describe how genes are related to each other. For more information, see What are gene families? in the Handbook.
How are changes in the GJB6 gene related to health conditions?
Where is the GJB6 gene located?
Cytogenetic Location: 13q12
Molecular Location on chromosome 13: base pairs 20,221,962 to 20,232,395
(Homo sapiens Annotation Release 107, GRCh38.p2) (
The GJB6 gene is located on the long (q) arm of chromosome 13 at position 12.
More precisely, the GJB6 gene is located from base pair 20,221,962 to base pair 20,232,395 on chromosome 13.
See How do geneticists indicate the location of a gene? in the Handbook.
Where can I find additional information about GJB6?
You and your healthcare professional may find the following resources about GJB6 helpful.
You may also be interested in these resources, which are designed for genetics professionals and researchers.
What other names do people use for the GJB6 gene or gene products?
See How are genetic conditions and genes named? in the Handbook.
Where can I find general information about genes?
The Handbook provides basic information about genetics in clear language.
These links provide additional genetics resources that may be useful.
What glossary definitions help with understanding GJB6?
You may find definitions for these and many other terms in the Genetics Home Reference Glossary.
See also Understanding Medical Terminology.
References (10 links)
The resources on this site should not be used as a substitute for professional medical care or advice. Users seeking information about a personal genetic disease, syndrome, or condition should consult with a qualified healthcare professional. See How can I find a genetics professional in my area? in the Handbook.