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Dominant-negative effect of SCN5A N-terminal mutations through the interaction of Nav1.5 α-subunits
Author(s) -
Jérôme Clatot,
Azza Ziyadeh-Isleem,
Svetlana Maugenre,
Isabelle Denjoy,
Haiyan Liu,
Gilles Dilanian,
Stéphane N. Hatem,
Isabelle Deschênes,
Alain Coulombe,
Pascale Guicheney,
Nathalie Neyroud
Publication year - 2012
Publication title -
cardiovascular research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.774
H-Index - 219
eISSN - 1755-3245
pISSN - 0008-6363
DOI - 10.1093/cvr/cvs211
Subject(s) - mutant , endoplasmic reticulum , sodium channel , mutation , microbiology and biotechnology , immunocytochemistry , chemistry , immunoprecipitation , hek 293 cells , biology , genetics , gene , endocrinology , sodium , organic chemistry
Brugada syndrome (BrS) is an autosomal-inherited cardiac arrhythmia characterized by an ST-segment elevation in the right precordial leads of the electrocardiogram and an increased risk of syncope and sudden death. SCN5A, encoding the cardiac sodium channel Na(v)1.5, is the main gene involved in BrS. Despite the fact that several mutations have been reported in the N-terminus of Na(v)1.5, the functional role of this region remains unknown. We aimed to characterize two BrS N-terminal mutations, R104W and R121W, a construct where this region was deleted, ΔNter, and a construct where only this region was present, Nter.

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