Barttin is a family of mammalian proteins that are chloride ion channel beta-subunits crucial for renal Cl-re-absorption and inner ear K+ secretion. Bartter syndrome is a term covering a heterogeneous group of autosomal recessive salt-losing nephropathies that are caused by disturbed transepithelial sodium chloride re-absorption in the distal nephron. Mutations in the BCD proteins lead to sensorial deafness.

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2: Barttin is a Cl- channel beta-subunit crucial for renal Cl- reabsorption and inner ear K+ secretion. Estevez R, Boettger T, Stein V, Birkenhager R, Otto E, Hildebrandt F, Jentsch TJ; Nature. 2001;414:558-561. PMID:11734858

3: Barttin increases surface expression and changes current properties of ClC-K channels. Waldegger S, Jeck N, Barth P, Peters M, Vitzthum H, Wolf K, Kurtz A, Konrad M, Seyberth HW; Pflugers Arch. 2002;444:411-418. PMID:12111250

4: Molecular mechanisms of Bartter syndrome caused by mutations in the BSND gene. Hayama A, Rai T, Sasaki S, Uchida S; Histochem Cell Biol. 2003;119:485-493. PMID:12761627

5: Atypical Bartter syndrome with sensorineural deafness with G47R mutation of the beta-subunit for ClC-Ka and ClC-Kb chloride channels, barttin. Miyamura N, Matsumoto K, Taguchi T, Tokunaga H, Nishikawa T, Nishida K, Toyonaga T, Sakakida M, Araki E; J Clin Endocrinol Metab. 2003;88:781-786. PMID:12574213