TMEM16A(ac) S673A (gray) versus S673D (sky blue). The S673A mutant is the nonphosphorylatable form. The S673D mutant mimics phosphorylation of the serine residue. Credit: DGIST Laboratory cell experiments and computer simulations have revealed molecular mechanisms regulating a protein channel responsible for transporting chloride and other charged molecules across cell membranes. The findings were published...