Mechanosensitive channel YnaI has lipid-bound extended sensor paddles

Abstract

Hu, Wang & Zheng describe the cryo-EM structure of a bacterial MscS-like channel, named YnaI, in closed state. They further describe its extended paddle domain that is attached to the N-terminus of MscS, lipid pockets between paddles, its ion-conducting pathway, and its heptameric assembly, finally discussing its mechanosensing mechanism.