ID   EXBB_HELPJ              Reviewed;         145 AA.
AC   Q9ZJP6;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 99.
DE   RecName: Full=Biopolymer transport protein ExbB;
GN   Name=exbB; OrderedLocusNames=jhp_1258;
OS   Helicobacter pylori (strain J99 / ATCC 700824) (Campylobacter pylori J99).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=85963;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=J99 / ATCC 700824;
RX   PubMed=9923682; DOI=10.1038/16495;
RA   Alm R.A., Ling L.-S.L., Moir D.T., King B.L., Brown E.D., Doig P.C.,
RA   Smith D.R., Noonan B., Guild B.C., deJonge B.L., Carmel G., Tummino P.J.,
RA   Caruso A., Uria-Nickelsen M., Mills D.M., Ives C., Gibson R., Merberg D.,
RA   Mills S.D., Jiang Q., Taylor D.E., Vovis G.F., Trust T.J.;
RT   "Genomic sequence comparison of two unrelated isolates of the human gastric
RT   pathogen Helicobacter pylori.";
RL   Nature 397:176-180(1999).
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}.
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DR   EMBL; AE001439; AAD06831.1; -; Genomic_DNA.
DR   PIR; D71829; D71829.
DR   RefSeq; WP_010882620.1; NZ_CP011330.1.
DR   AlphaFoldDB; Q9ZJP6; -.
DR   SMR; Q9ZJP6; -.
DR   STRING; 85963.jhp_1258; -.
DR   EnsemblBacteria; AAD06831; AAD06831; jhp_1258.
DR   KEGG; hpj:jhp_1258; -.
DR   PATRIC; fig|85963.30.peg.1313; -.
DR   eggNOG; COG0811; Bacteria.
DR   OMA; WFVIERI; -.
DR   Proteomes; UP000000804; Chromosome.
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:0015031; P:protein transport; IEA:UniProtKB-KW.
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   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..145
FT                   /note="Biopolymer transport protein ExbB"
FT                   /id="PRO_0000145804"
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;  15837 MW;  6ABCB95BADDAF934 CRC64;
     MGGFSMAMLK DYVDVFVFAV LGVASFLALW FVIERVIFYS KVDLKAYDDI DALNLDLTKN
     LTILYVIFSN APYVGLLGTV LGIMVIFYDM GVSGGMDAKT IMVGLSLALK ATALGLAVAI
     PTLIAYNSLL RKSDVLSEKF RIMKT