ID   TATB_HELPJ              Reviewed;         160 AA.
AC   Q9ZM58;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 111.
DE   RecName: Full=Sec-independent protein translocase protein TatB {ECO:0000255|HAMAP-Rule:MF_00237};
GN   Name=tatB {ECO:0000255|HAMAP-Rule:MF_00237}; OrderedLocusNames=jhp_0365;
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: Part of the twin-arginine translocation (Tat) system that
CC       transports large folded proteins containing a characteristic twin-
CC       arginine motif in their signal peptide across membranes. Together with
CC       TatC, TatB is part of a receptor directly interacting with Tat signal
CC       peptides. TatB may form an oligomeric binding site that transiently
CC       accommodates folded Tat precursor proteins before their translocation.
CC       {ECO:0000255|HAMAP-Rule:MF_00237}.
CC   -!- SUBUNIT: The Tat system comprises two distinct complexes: a TatABC
CC       complex, containing multiple copies of TatA, TatB and TatC subunits,
CC       and a separate TatA complex, containing only TatA subunits. Substrates
CC       initially bind to the TatABC complex, which probably triggers
CC       association of the separate TatA complex to form the active translocon.
CC       {ECO:0000255|HAMAP-Rule:MF_00237}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00237}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00237}.
CC   -!- SIMILARITY: Belongs to the TatB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00237}.
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DR   EMBL; AE001439; AAD05939.1; -; Genomic_DNA.
DR   PIR; E71942; E71942.
DR   RefSeq; WP_000467517.1; NZ_CP011330.1.
DR   AlphaFoldDB; Q9ZM58; -.
DR   SMR; Q9ZM58; -.
DR   STRING; 85963.jhp_0365; -.
DR   EnsemblBacteria; AAD05939; AAD05939; jhp_0365.
DR   KEGG; hpj:jhp_0365; -.
DR   PATRIC; fig|85963.30.peg.646; -.
DR   eggNOG; COG1826; Bacteria.
DR   OMA; DLMQDYQ; -.
DR   Proteomes; UP000000804; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0033281; C:TAT protein transport complex; IEA:UniProtKB-UniRule.
DR   GO; GO:0008320; F:protein transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043953; P:protein transport by the Tat complex; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00237; TatB; 1.
DR   InterPro; IPR018448; TatB.
DR   TIGRFAMs; TIGR01410; tatB; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Protein transport;
KW   Translocation; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..160
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000192659"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          118..160
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        124..138
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        146..160
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   160 AA;  18411 MW;  FDB70738CD5A1944 CRC64;
     MFGMGFFEIL VVLIVAIIFL GPEKFPQAVV DIVKFFRAVK KTLNDAKDTL DKEINIEEIK
     KETLEYQKLF ENKVESLKGV KIEELEDAKV TAENEIKSIQ DLMQDYKRSL ETNTIPNHLN
     EEVSNEEALN KEVSSDESPK EVQLTTDNNA KEHDKEKEHV