gap junction protein beta 3
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A GJB3 gene provides instructions for making a protein called gap junction beta 3, more commonly known as connexin 31. This protein is part of the connexin family, a group of proteins that form channels called gap junctions on the surface of cells. Gap junctions open and close to regulate the flow of nutrients, charged atoms (ions), and other signaling molecules from one cell to another. They are essential for direct communication between neighboring cells.
Normal function
A GJB3 gene provides instructions for making a protein called gap junction beta 3, more commonly known as connexin 31. This protein is part of the connexin family, a group of proteins that form channels called gap junctions on the surface of cells. Gap junctions open and close to regulate the flow of nutrients, charged atoms (ions), and other signaling molecules from one cell to another. They are essential for direct communication between neighboring cells.
Connexin 31 is found in several different parts of the body, including the outermost layer of the skin (the epidermis) and structures of the inner ear. Connexin 31 plays a role in the growth and maturation of cells in the epidermis. The exact role of this protein in the inner ear is less clear, although it appears to be involved in hearing.
Conditions referring to this gene or chromosome
Other names
connexin 31
CX31
CXB3_HUMAN
DFNA2
gap junction protein, beta 3, 31kDa
PNHI
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Leitura adicional e referências
- gap junction protein beta 3; MedlinePlus, National Library of Medicine.
- Chi J, Li L, Liu M, Tan J, Tang C, Pan Q, Wang D, Zhang Z. Pathogenic connexin-31 forms constitutively active hemichannels to promote necrotic cell death. PLoS One. 2012;7(2):e32531. doi: 10.1371/journal.pone.0032531. Epub 2012 Feb 29.
- Diestel S, Richard G, Doring B, Traub O. Expression of a connexin31 mutation causing erythrokeratodermia variabilis is lethal for HeLa cells. Biochem Biophys Res Commun. 2002 Aug 23;296(3):721-8. doi: 10.1016/s0006-291x(02)00929-4.
- Easton JA, Albuloushi AK, Kamps MAF, Brouns GHMR, Broers JLV, Coull BJ, Oji V, van Geel M, van Steensel MAM, Martin PE. A rare missense mutation in GJB3 (Cx31G45E) is associated with a unique cellular phenotype resulting in necrotic cell death. Exp Dermatol. 2019 Oct;28(10):1106-1113. doi: 10.1111/exd.13542. Epub 2018 May 10.
- Liu XZ, Xia XJ, Xu LR, Pandya A, Liang CY, Blanton SH, Brown SD, Steel KP, Nance WE. Mutations in connexin31 underlie recessive as well as dominant non-syndromic hearing loss. Hum Mol Genet. 2000 Jan 1;9(1):63-7. doi: 10.1093/hmg/9.1.63.
- Oh SK, Choi SY, Yu SH, Lee KY, Hong JH, Hur SW, Kim SJ, Jeon CJ, Kim UK. Evaluation of the pathogenicity of GJB3 and GJB6 variants associated with nonsyndromic hearing loss. Biochim Biophys Acta. 2013 Jan;1832(1):285-91. doi: 10.1016/j.bbadis.2012.05.009. Epub 2012 May 19.
- Petersen MB, Willems PJ. Non-syndromic, autosomal-recessive deafness. Clin Genet. 2006 May;69(5):371-92. doi: 10.1111/j.1399-0004.2006.00613.x.
- Richard G, Smith LE, Bailey RA, Itin P, Hohl D, Epstein EH Jr, DiGiovanna JJ, Compton JG, Bale SJ. Mutations in the human connexin gene GJB3 cause erythrokeratodermia variabilis. Nat Genet. 1998 Dec;20(4):366-9. doi: 10.1038/3840.
- Scott CA, O'Toole EA, Mohungoo MJ, Messenger A, Kelsell DP. Novel and recurrent connexin 30.3 and connexin 31 mutations associated with erythrokeratoderma variabilis. Clin Exp Dermatol. 2011 Jan;36(1):88-90. doi: 10.1111/j.1365-2230.2010.03945.x.
- Sugiura K, Arima M, Matsunaga K, Akiyama M. The novel GJB3 mutation p.Thr202Asn in the M4 transmembrane domain underlies erythrokeratodermia variabilis. Br J Dermatol. 2015 Jul;173(1):309-11. doi: 10.1111/bjd.13641. Epub 2015 May 28. No abstract available.
- Xia JH, Liu CY, Tang BS, Pan Q, Huang L, Dai HP, Zhang BR, Xie W, Hu DX, Zheng D, Shi XL, Wang DA, Xia K, Yu KP, Liao XD, Feng Y, Yang YF, Xiao JY, Xie DH, Huang JZ. Mutations in the gene encoding gap junction protein beta-3 associated with autosomal dominant hearing impairment. Nat Genet. 1998 Dec;20(4):370-3. doi: 10.1038/3845.
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