Figure 5.
Comparison of Cd2+ and ATP-induced currents between G551A and G551C mutants. (A) Representative current trace of G551A-CFTR. Although G551A-CFTR remains ATP dependent, Cd2+ fails to increase the activity of the channels. (B) The ratio of currents induced by 10 μM Cd2+ and those with 1 mM ATP for G551C-CFTR and G551A-CFTR.