On the mechanism of gating defects caused by the R117H mutation in cystic fibrosis transmembrane conductance regulator.

Abstract excerpt

KEY POINTS: Two functional abnormalities of cystic fibrosis transmembrane conductance regulator (CFTR), a 25% reduction of the single-channel conductance (g) and a ∼13-fold lower open probability (Po ), were found with the R117H mutation that is associated with mild forms of cystic fibrosis. Characterizations of the gating defects of R117H-CFTR led to the conclusion that the mutation decreases Po by perturbing...

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