Stepwise activation mechanism of the scramblase nhTMEM16 revealed by cryo-EM
Scramblases catalyze the movement of lipids between both leaflets of a bilayer.Whereas the X-ray structure of the protein nhTMEM16 has previously revealed the architecture of a Ca2+-dependent lipid scramblase, its regulation mechanism has remained elusive.Here, we have used cryo-electron microscopy and functional assays to address this question.Ca2