ID   MOTA_CERSP              Reviewed;         253 AA.
AC   Q53174;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 73.
DE   RecName: Full=Motility protein A;
DE   AltName: Full=Chemotaxis protein MotA;
GN   Name=motA;
OS   Cereibacter sphaeroides (Rhodobacter sphaeroides).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Cereibacter.
OX   NCBI_TaxID=1063;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=WS8;
RX   PubMed=8596445; DOI=10.1111/j.1365-2958.1995.mmi_17050961.x;
RA   Shah D.S.H., Sockett R.E.;
RT   "Analysis of the motA flagellar motor gene from Rhodobacter sphaeroides, a
RT   bacterium with a unidirectional, stop-start flagellum.";
RL   Mol. Microbiol. 17:961-969(1995).
CC   -!- FUNCTION: MotA and MotB comprise the stator element of the flagellar
CC       motor complex. Required for rotation of the flagellar motor. Probable
CC       transmembrane proton channel (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Each stator complex is composed of 4 MotA and 2 MotB subunits.
CC       2 A subunits and 1 B subunit are thought to form a single ion channel,
CC       so that each stator complex contains two channels (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the MotA family. {ECO:0000305}.
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DR   EMBL; X85986; CAA59974.1; -; Genomic_DNA.
DR   PIR; S70170; S70170.
DR   AlphaFoldDB; Q53174; -.
DR   SMR; Q53174; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0097588; P:archaeal or bacterial-type flagellum-dependent cell motility; IEA:UniProtKB-KW.
DR   GO; GO:0006935; P:chemotaxis; IEA:UniProtKB-KW.
DR   GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR   InterPro; IPR000540; Flag_MotA_CS.
DR   InterPro; IPR002898; MotA_ExbB_proton_chnl.
DR   Pfam; PF01618; MotA_ExbB; 1.
DR   PROSITE; PS01307; MOTA; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Chemotaxis; Flagellar rotation;
KW   Hydrogen ion transport; Ion transport; Membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..253
FT                   /note="Motility protein A"
FT                   /id="PRO_0000189577"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        29..49
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        146..166
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        181..201
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        202..253
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   253 AA;  27195 MW;  B35462AAE123FDCC CRC64;
     MDIAAAIGLI GAIVMVVGSM IYAGGVAPFV DIPSLVIVVA GTAFIVLAMK PLPVFLGHFK
     AMMKVFKPSR FDMNEVISTM VELSNLARKD GIMALEGKAV PDAFFEKGLQ LLVDGTDEAK
     LVKQLKYEIK AMKARHEAYQ GAVKAWIDIG PAMGMVGTLI GLVLMLGNMS DPKSIGPAMA
     VALLTTLYGA LMANVIFAPI LNKLEGYSAD EVTYRELVIE GLRGIARGES ARMIEDQMVC
     ALDRKQQMKR KAA