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1.A.30.1.2
The flagellar motor (smf-dependent) (PomAB; MotXY) (Okabe et al., 2005). PomB interacts with the third TMS of PomA in the Na+-driven polar flagellum (Yakushi et al. 2004). Sodium-powered stators of the flagellar motor can generate torque in the presence of the sodium channel blocker, phenamil, with mutations near the peptidoglycan-binding region of PomB (Ishida et al. 2019). FliL associates with the flagellar stator in the sodium-driven Vibrio motor (Lin et al. 2018). When the ion channel is closed, PomA and PomB interact strongly. When the ion channel opens, PomA interacts less tightly with PomB. The plug and loop between TMSs 1 and 2 regulate activation of the stator, which depends on the binding of sodium ion to the D24 residue of PomB (Nishikino et al. 2019).

Accession Number:O06874
Protein Name:PomB
Length:315
Molecular Weight:35463.00
Species:Vibrio alginolyticus [663]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate Na+

Cross database links:

Pfam: PF00691   

Gene Ontology

GO:0009279 C:cell outer membrane

References (1)

[1] “Putative channel components for the fast-rotating sodium-driven flagellar motor of a marine bacterium.”  Asai Y.et.al.   9260952
Structure:
3WPW   3WPX     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MDDEDNKCDC PPPGLPLWMG TFADLMSLLM CFFVLLLSFS EMDVLKFKQI AGSMKFAFGV 
61:	QNQLEVKDIP KGTSIIAQEF RPGRPEPTPI DVIMQQTMDI TQQTLEFHEG ESDRAGGTKR 
121:	DEGKLTGGQS PATSTQNNES AEADMQQQQS KEMSQEMETL MESIKKALER EIEQGAIEVE 
181:	NLGQQIVIRM REKGAFPEGS AFLQPKFRPL VRQIAELVKD VPGIVRVSGH TDNRPLDSEL 
241:	YRSNWDLSSQ RAVSVAQEME KVRGFSHQRL RVRGMADTEP LLPNDSDDNR ALNRRVEISI 
301:	MQGEPLYSEE VPVIQ