Flagellar motor protein MotA, conserved site / Flagellar motor protein motA family signature. / Motility protein B-like, N-terminal domain / Membrane MotB of proton-channel complex MotA/MotB / MotA/TolQ/ExbB proton channel / MotA/TolQ/ExbB proton channel family / : / OmpA-like domain profile. / OmpA-like domain superfamily / OmpA family / OmpA-like domain 類似検索 - ドメイン・相同性
Chemotaxis protein MotB / Chemotaxis MotA protein 類似検索 - 構成要素
ジャーナル: Nat Microbiol / 年: 2020 タイトル: Structures of the stator complex that drives rotation of the bacterial flagellum. 著者: Justin C Deme / Steven Johnson / Owen Vickery / Amy Aron / Holly Monkhouse / Thomas Griffiths / Rory Hennell James / Ben C Berks / James W Coulton / Phillip J Stansfeld / Susan M Lea / 要旨: The bacterial flagellum is the prototypical protein nanomachine and comprises a rotating helical propeller attached to a membrane-embedded motor complex. The motor consists of a central rotor ...The bacterial flagellum is the prototypical protein nanomachine and comprises a rotating helical propeller attached to a membrane-embedded motor complex. The motor consists of a central rotor surrounded by stator units that couple ion flow across the cytoplasmic membrane to generate torque. Here, we present the structures of the stator complexes from Clostridium sporogenes, Bacillus subtilis and Vibrio mimicus, allowing interpretation of the extensive body of data on stator mechanism. The structures reveal an unexpected asymmetric AB subunit assembly where the five A subunits enclose the two B subunits. Comparison to structures of other ion-driven motors indicates that this AB architecture is fundamental to bacterial systems that couple energy from ion flow to generate mechanical work at a distance and suggests that such events involve rotation in the motor structures.
A: Chemotaxis motB protein B: Chemotaxis motB protein E: Chemotaxis MotA protein C: Chemotaxis MotA protein D: Chemotaxis MotA protein F: Chemotaxis MotA protein G: Chemotaxis MotA protein