This entry represents the N-terminal domain of Motility protein A (MotA). MotA is a membrane protein that forms the stator element of the flagellar motor complex together with MotB with 5:2 stoichiometry, which couples ion flow across the cytoplasmic membrane to generate torque, and thus, it is required for rotation of the flagellar motor. This domain contains conserved torque-generating charged residues at the C-terminal [1] and is adjacent Pfam:PF01618, which represents MotA TMH3 and TMH4.

1: Structures of the stator complex that drives rotation of the bacterial flagellum. Deme JC, Johnson S, Vickery O, Aron A, Monkhouse H, Griffiths T, James RH, Berks BC, Coulton JW, Stansfeld PJ, Lea SM; Nat Microbiol. 2020;5:1553-1564. PMID:32929189