ID   EXBB_PSEPU              Reviewed;         329 AA.
AC   Q05605;
DT   01-OCT-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1994, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=Biopolymer transport protein ExbB;
GN   Name=exbB;
OS   Pseudomonas putida (Arthrobacter siderocapsulatus).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=303;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=WCS358;
RX   PubMed=8437515; DOI=10.1111/j.1365-2958.1993.tb01103.x;
RA   Bitter W., Tommassen J., Weisbeek P.J.;
RT   "Identification and characterization of the exbB, exbD and tonB genes of
RT   Pseudomonas putida WCS358: their involvement in ferric-pseudobactin
RT   transport.";
RL   Mol. Microbiol. 7:117-130(1993).
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.
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; X70139; CAA49714.1; -; Genomic_DNA.
DR   PIR; S28442; S28442.
DR   AlphaFoldDB; Q05605; -.
DR   SMR; Q05605; -.
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:0022857; F:transmembrane transporter activity; IEA:InterPro.
DR   GO; GO:0015031; P:protein transport; IEA:UniProtKB-KW.
DR   InterPro; IPR002898; MotA_ExbB_proton_chnl.
DR   InterPro; IPR014164; TonB_ExbB_1.
DR   Pfam; PF01618; MotA_ExbB; 1.
DR   TIGRFAMs; TIGR02797; exbB; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Protein transport; Repeat;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..329
FT                   /note="Biopolymer transport protein ExbB"
FT                   /id="PRO_0000145810"
FT   TOPO_DOM        1..17
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        18..34
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        35..111
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        112..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        135..219
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        220..241
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        242..265
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        266..287
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        288..329
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   REPEAT          30..34
FT                   /note="1"
FT   REPEAT          37..41
FT                   /note="2; approximate"
FT   REPEAT          44..48
FT                   /note="3"
FT   REPEAT          53..57
FT                   /note="4"
FT   REPEAT          59..63
FT                   /note="5; approximate"
FT   REPEAT          66..70
FT                   /note="6"
FT   REPEAT          71..75
FT                   /note="7"
FT   REPEAT          79..83
FT                   /note="8; approximate"
FT   REGION          30..83
FT                   /note="8 X 5 AA repeats of P-[AV]-A-X-[AP]"
SQ   SEQUENCE   329 AA;  33929 MW;  D06C94A344CC2A1D CRC64;
     MTRTQPSASP TPSRAWRAIA ALMFSLVLAP VAMADEPTAN ASTPAAAAAP ATPAAAPAPA
     ADGSAPVADA PAAAPVDAPV AVDPGVEALV EDTTLGMAHD LSPWGMYKNA DIVVKIVMIG
     LAIASIITWT IWIAKGFELM GAKRRLRGEI AQLKKSASLK EASEVSNKEG TLAHTLVHDA
     LEEMRLSANT REKEGIKERV AFRLERLVAA SGRNMSSGTG VLATIGSTAP FVGLFGTVWG
     IMNSFIGIAK TQTTNLAVVA PGIAEALLAT ALGLVAAIPA VVIYNVFARS IAGYKAQVSD
     ASAQVLLLVS RDLDHQGSER AAPHMVKVG