SLC26A3 does not exchange Cl- for HCO3-

Stable Identifier
Reaction [transition]
Homo sapiens
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Solute carrier (SLC) genes that code chloride (Cl-)/bicarbonate (HCO3-) exchanger proteins are the SLC4 and SLC26 families. The chloride anion exchanger SLC26A3 (aka down-regulated in adenoma, DRA) mediates electrolyte and fluid absorption in the colon. Defects in SLC26A3 cause congenital chloride diarrhea 1 (DIAR1), a disease characterised by watery stools containing an excess of chloride resulting in dehydration, hypokalemia, and metabolic alkalosis. Mutations in SLC26A3 causing DIAR1 include W462*, G187*, I676ins and V317del (Hoglund et al. 1996, 1998, Makela et al. 2002).

Literature References
PubMed ID Title Journal Year
9718329 Genetic background of congenital chloride diarrhea in high-incidence populations: Finland, Poland, and Saudi Arabia and Kuwait

Socha, J, Höglund, P, Nazer, H, Rajaram, U, Popinska, K, de la Chapelle, A, Al-Ghanim, M, Kere, J, Auranen, M, Al Sanie, A, Holmberg, C

Am. J. Hum. Genet. 1998
12442266 SLC26A3 mutations in congenital chloride diarrhea

Kere, J, Mäkelä, S, Höglund, P, Holmberg, C

Hum. Mutat. 2002
8896562 Mutations of the Down-regulated in adenoma (DRA) gene cause congenital chloride diarrhoea

Tomaszewski, L, Holmberg, C, Socha, J, Höglund, P, Haila, S, Airola, K, Karjalainen-Lindsberg, ML, Kere, J, de la Chapelle, A, Saarialho-Kere, U

Nat Genet 1996
Catalyst Activity

inorganic anion exchanger activity of SLC26A3 mutants [plasma membrane]

Normal reaction
Functional status

Loss of function of SLC26A3 mutants [plasma membrane]

Name Identifier Synonyms
secretory diarrhea DOID:0050129
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