Architecture of the Bacterial Flagellar Distal Rod and Hook of Salmonella.

ABSTRACT: The bacterial flagellum is a large molecular complex composed of thousands of protein subunits for motility. The filamentous part of the flagellum, which is called the axial structure, consists of the filament, the hook, and the rods, with other minor components-the cap protein and the hook associated proteins. They share a common basic architecture of subunit arrangement, but each part shows quite distinct mechanical properties to achieve its specific function. The distal rod and the hook are helical assemblies of a single protein, FlgG and FlgE, respectively. They show a significant sequence similarity but have distinct mechanical characteristics. The rod is a rigid, straight cylinder, whereas the hook is a curved tube with high bending flexibility. Here, we report a structural model of

SUBMITTER: Saijo-Hamano Y 

PROVIDER: S-EPMC6681337 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature