Figure 1.
I-V relationship of R334C CFTR is modified by MTSET+ and MTSES−. (A) I-V plots at steady-state activation. Oocytes were continuously perfused with a cocktail containing 10 μM isoproterenol and 1 mM IBMX (control). An ∼5-min exposure to 1 mM MTSET+ induced an approximate doubling of the conductance and a change in the shape of the I-V plot. (B) I-V plots obtained at steady-state activation (control) and after ∼5-min exposure to 1 mM MTSES− that attenuated the conductance by ∼50% and enhanced inward rectification.