Putative Spanner Function of the Vibrio PomB Plug Region in the Stator Rotation Model for Flagellar Motor.

ABSTRACT: Bacterial flagella are the best-known rotational organelles in the biological world. The spiral-shaped flagellar filaments that extend from the cell surface rotate like a screw to create a propulsive force. At the base of the flagellar filament lies a protein motor that consists of a stator and a rotor embedded in the membrane. The stator is composed of two types of membrane subunits, PomA (similar to MotA in Escherichia coli) and PomB (similar to MotB in E. coli), which are energy converters that assemble around the rotor to couple rotation with the ion flow. Recently, stator structures, where two MotB molecules are inserted into the center of a ring made of five MotA molecules, were reported. This structure inspired a model in which the MotA ring rotates around the MotB dimer in response

SUBMITTER: Homma M 

PROVIDER: S-EPMC8297526 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature