ID   EXBB_HELPY              Reviewed;         145 AA.
AC   O25897;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 2.
DT   25-MAY-2022, entry version 108.
DE   RecName: Full=Biopolymer transport protein ExbB;
GN   Name=exbB; OrderedLocusNames=HP_1339;
OS   Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=85962;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700392 / 26695;
RX   PubMed=9252185; DOI=10.1038/41483;
RA   Tomb J.-F., White O., Kerlavage A.R., Clayton R.A., Sutton G.G.,
RA   Fleischmann R.D., Ketchum K.A., Klenk H.-P., Gill S.R., Dougherty B.A.,
RA   Nelson K.E., Quackenbush J., Zhou L., Kirkness E.F., Peterson S.N.,
RA   Loftus B.J., Richardson D.L., Dodson R.J., Khalak H.G., Glodek A.,
RA   McKenney K., FitzGerald L.M., Lee N., Adams M.D., Hickey E.K., Berg D.E.,
RA   Gocayne J.D., Utterback T.R., Peterson J.D., Kelley J.M., Cotton M.D.,
RA   Weidman J.F., Fujii C., Bowman C., Watthey L., Wallin E., Hayes W.S.,
RA   Borodovsky M., Karp P.D., Smith H.O., Fraser C.M., Venter J.C.;
RT   "The complete genome sequence of the gastric pathogen Helicobacter
RT   pylori.";
RL   Nature 388:539-547(1997).
CC   -!- FUNCTION: Involved in the TonB-dependent energy-dependent transport of
CC       various receptor-bound substrates. Protects ExbD from proteolytic
CC       degradation and functionally stabilizes TonB (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBUNIT: The accessory proteins ExbB and ExbD seem to form a complex
CC       with TonB. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Multi-pass membrane protein.
CC   -!- SIMILARITY: Belongs to the ExbB/TolQ family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAD08381.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE000511; AAD08381.1; ALT_INIT; Genomic_DNA.
DR   PIR; C64687; C64687.
DR   RefSeq; NP_208131.1; NC_000915.1.
DR   RefSeq; WP_001862479.1; NC_000915.1.
DR   AlphaFoldDB; O25897; -.
DR   SMR; O25897; -.
DR   STRING; 85962.C694_06910; -.
DR   PaxDb; O25897; -.
DR   EnsemblBacteria; AAD08381; AAD08381; HP_1339.
DR   KEGG; hpy:HP_1339; -.
DR   PATRIC; fig|85962.47.peg.1434; -.
DR   eggNOG; COG0811; Bacteria.
DR   OMA; WFVIERI; -.
DR   PhylomeDB; O25897; -.
DR   Proteomes; UP000000429; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IBA:GO_Central.
DR   GO; GO:0017038; P:protein import; IBA:GO_Central.
DR   GO; GO:0055085; P:transmembrane transport; IEA:InterPro.
DR   InterPro; IPR002898; MotA_ExbB_proton_chnl.
DR   InterPro; IPR014172; TonB_ExbB_2.
DR   Pfam; PF01618; MotA_ExbB; 1.
DR   TIGRFAMs; TIGR02805; exbB2; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Protein transport;
KW   Reference proteome; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..145
FT                   /note="Biopolymer transport protein ExbB"
FT                   /id="PRO_0000145803"
FT   TRANSMEM        13..33
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        67..87
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        101..121
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   145 AA;  15804 MW;  A44BB5BA436F9540 CRC64;
     MGGFSVGMLK DYVDIFVFAV LGVASFLALW FAIERVIFYS KVDLKAYDDI DALNLDLTKN
     LTILYVIFSN APYVGLLGTV LGIMVIFYDM GVSGGMDAKT IMVGLSLALK ATALGLAVAI
     PTLIAYNSLL RKSDVLSEKF RIMKK