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    J Biol Chem. 1995 Nov 17;270(46):27411-4.

    Molecular cloning and functional expression of a novel amiloride-sensitive Na+ channel.

    Waldmann R, Champigny G, Bassilana F, Voilley N, Lazdunski M.

    Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France.

    We have isolated a cDNA for a novel human amiloride-sensitive Na+ channel isoform (called delta) which is expressed mainly in brain, pancreas, testis, and ovary. When expressed in Xenopus oocytes, it generates an amiloride-sensitive Na+ channel with biophysical and pharmacological properties distinct from those of the epithelial Na+ channel, a multimeric assembly of alpha, beta, and gamma subunits. The Na+ current produced by the new delta isoform is increased by two orders of magnitude after coexpression of the beta and gamma subunit of the epithelial Na+ channel showing that delta can associate with other subunits and is part of a novel multisubunit ion channel.

    PMID: 7499195 [PubMed - indexed for MEDLINE]

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