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Structural highlights

Disease

S26A2_HUMAN Atelosteogenesis type II;Diastrophic dysplasia;Achondrogenesis type 1B;Multiple epiphyseal dysplasia type 4. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry.

Function

S26A2_HUMAN Sulfate transporter which mediates sulfate uptake into chondrocytes in order to maintain adequate sulfation of proteoglycans which is needed for cartilage development (PubMed:11448940, PubMed:15294877, PubMed:20219950, PubMed:7923357). Mediates electroneutral anion exchange of sulfate ions for oxalate ions and of sulfate and oxalate ions for chloride ions (PubMed:20219950). Mediates exchange of sulfate and oxalate ions for hydroxyl ions and of chloride ions for bromide, iodide and nitrate ions (By similarity). The coupling of sulfate transport to both hydroxyl and chloride ions likely serves to ensure transport at both acidic pH when most sulfate uptake is mediated by sulfate-hydroxide exchange and alkaline pH when most sulfate uptake is mediated by sulfate-chloride exchange (By similarity). Essential for chondrocyte proliferation, differentiation and cell size expansion (By similarity).[UniProtKB:Q62273]^{[1] [2] [3] [4]}

References

1. ↑ Karniski LP. Mutations in the diastrophic dysplasia sulfate transporter (DTDST) gene: correlation between sulfate transport activity and chondrodysplasia phenotype. Hum Mol Genet. 2001 Jul 1;10(14):1485-90. PMID:11448940 doi:10.1093/hmg/10.14.1485
2. ↑ Karniski LP. Functional expression and cellular distribution of diastrophic dysplasia sulfate transporter (DTDST) gene mutations in HEK cells. Hum Mol Genet. 2004 Oct 1;13(19):2165-71. PMID:15294877 doi:10.1093/hmg/ddh242
3. ↑ Heneghan JF, Akhavein A, Salas MJ, Shmukler BE, Karniski LP, Vandorpe DH, Alper SL. Regulated transport of sulfate and oxalate by SLC26A2/DTDST. Am J Physiol Cell Physiol. 2010 Jun;298(6):C1363-75. PMID:20219950 doi:10.1152/ajpcell.00004.2010
4. ↑ Hästbacka J, de la Chapelle A, Mahtani MM, Clines G, Reeve-Daly MP, Daly M, Hamilton BA, Kusumi K, Trivedi B, Weaver A, et al.. The diastrophic dysplasia gene encodes a novel sulfate transporter: positional cloning by fine-structure linkage disequilibrium mapping. Cell. 1994 Sep 23;78(6):1073-87. PMID:7923357 doi:10.1016/0092-8674(94)90281-x