Mutations in the CFTR gene cause cystic fibrosis (CF), the most
common fatal, inheriteddisease inCaucasianpopulations[5]. CFTR
is therefore an important therapeutic target for CF treatment.
Despite significant advances in synthesizingnovel compounds that
can modulate the activity of CFTR, there is still no cure for CF (see
[6–8] for review). The three-dimensional structure of CFTR is
highly desirable for functional studies and therapeutic design
regarding CFTR