ID   TATB_XANC8              Reviewed;         195 AA.
AC   Q4UP02;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2005, 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=XC_4183;
OS   Xanthomonas campestris pv. campestris (strain 8004).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Xanthomonadales;
OC   Xanthomonadaceae; Xanthomonas.
OX   NCBI_TaxID=314565;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=8004;
RX   PubMed=15899963; DOI=10.1101/gr.3378705;
RA   Qian W., Jia Y., Ren S.-X., He Y.-Q., Feng J.-X., Lu L.-F., Sun Q.,
RA   Ying G., Tang D.-J., Tang H., Wu W., Hao P., Wang L., Jiang B.-L., Zeng S.,
RA   Gu W.-Y., Lu G., Rong L., Tian Y., Yao Z., Fu G., Chen B., Fang R.,
RA   Qiang B., Chen Z., Zhao G.-P., Tang J.-L., He C.;
RT   "Comparative and functional genomic analyses of the pathogenicity of
RT   phytopathogen Xanthomonas campestris pv. campestris.";
RL   Genome Res. 15:757-767(2005).
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; CP000050; AAY51221.1; -; Genomic_DNA.
DR   RefSeq; WP_011039161.1; NC_007086.1.
DR   AlphaFoldDB; Q4UP02; -.
DR   SMR; Q4UP02; -.
DR   EnsemblBacteria; AAY51221; AAY51221; XC_4183.
DR   KEGG; xcb:XC_4183; -.
DR   HOGENOM; CLU_086034_1_1_6; -.
DR   OMA; GQFQEAM; -.
DR   OrthoDB; 2073616at2; -.
DR   Proteomes; UP000000420; 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; IPR003369; TatA/B/E.
DR   InterPro; IPR018448; TatB.
DR   Pfam; PF02416; TatA_B_E; 1.
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..195
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301248"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          130..195
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        136..150
FT                   /note="Pro residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        164..195
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   195 AA;  20930 MW;  8DDDDB6F526AD390 CRC64;
     MFDIGFSELA LIAVVALVVL GPERLPKAAR FAGLWVRRAR MQWDSVKQEL ERELEAEELK
     RSLQDVQASL REAEGQLRNT QQQVEDGARG LHDQARELHD EVGRDIDIRT SATPLAAPLE
     LQADAPVVLE PGSAQPHTPV PAPAPVVAQA QPMAPAPKQT LVPAPHGSLT STQVTTHAPT
     ASATASSTSP QEKTP