ID   TATB_HELHP              Reviewed;         189 AA.
AC   Q7VG35;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 85.
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=HH_1489;
OS   Helicobacter hepaticus (strain ATCC 51449 / 3B1).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=235279;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51449 / 3B1;
RX   PubMed=12810954; DOI=10.1073/pnas.1332093100;
RA   Suerbaum S., Josenhans C., Sterzenbach T., Drescher B., Brandt P., Bell M.,
RA   Droege M., Fartmann B., Fischer H.-P., Ge Z., Hoerster A., Holland R.,
RA   Klein K., Koenig J., Macko L., Mendz G.L., Nyakatura G., Schauer D.B.,
RA   Shen Z., Weber J., Frosch M., Fox J.G.;
RT   "The complete genome sequence of the carcinogenic bacterium Helicobacter
RT   hepaticus.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:7901-7906(2003).
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; AE017125; AAP78086.1; -; Genomic_DNA.
DR   RefSeq; WP_011116329.1; NC_004917.1.
DR   AlphaFoldDB; Q7VG35; -.
DR   SMR; Q7VG35; -.
DR   STRING; 235279.HH_1489; -.
DR   EnsemblBacteria; AAP78086; AAP78086; HH_1489.
DR   KEGG; hhe:HH_1489; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_086034_0_0_7; -.
DR   OMA; YEGFREM; -.
DR   OrthoDB; 1998101at2; -.
DR   Proteomes; UP000002495; 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   Reference proteome; Translocation; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..189
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301176"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          152..189
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   189 AA;  20855 MW;  54D559D95BDE2A05 CRC64;
     MFGVGIFEVL VILIVAVIAL GPNKLPQTIV DIVKFFRAVK KTMAEAKETF DKEIQLSEIK
     QEALKYKDTL ESEVNKLTKD IRLDELREIS VDSLTKPLQE TKEVLSEEAK NLQSTLESLN
     SDISYESSAA AQTPTTQESI PTDSTREIAY ATQKPQNSID SINSKESSVD SLHSPSIVES
     TQSSSSKDS