ID   TATB_SACD2              Reviewed;         169 AA.
AC   Q21FP7;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   18-APR-2006, sequence version 1.
DT   25-MAY-2022, entry version 80.
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=Sde_3225;
OS   Saccharophagus degradans (strain 2-40 / ATCC 43961 / DSM 17024).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Cellvibrionales;
OC   Cellvibrionaceae; Saccharophagus.
OX   NCBI_TaxID=203122;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=2-40 / ATCC 43961 / DSM 17024;
RX   PubMed=18516288; DOI=10.1371/journal.pgen.1000087;
RA   Weiner R.M., Taylor L.E. II, Henrissat B., Hauser L., Land M.,
RA   Coutinho P.M., Rancurel C., Saunders E.H., Longmire A.G., Zhang H.,
RA   Bayer E.A., Gilbert H.J., Larimer F., Zhulin I.B., Ekborg N.A., Lamed R.,
RA   Richardson P.M., Borovok I., Hutcheson S.;
RT   "Complete genome sequence of the complex carbohydrate-degrading marine
RT   bacterium, Saccharophagus degradans strain 2-40 T.";
RL   PLoS Genet. 4:E1000087-E1000087(2008).
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000282; ABD82482.1; -; Genomic_DNA.
DR   RefSeq; WP_011469698.1; NC_007912.1.
DR   AlphaFoldDB; Q21FP7; -.
DR   SMR; Q21FP7; -.
DR   STRING; 203122.Sde_3225; -.
DR   EnsemblBacteria; ABD82482; ABD82482; Sde_3225.
DR   KEGG; sde:Sde_3225; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_086034_1_1_6; -.
DR   OMA; GATWMAK; -.
DR   OrthoDB; 2073616at2; -.
DR   Proteomes; UP000001947; 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   Reference proteome; Translocation; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..169
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301229"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          98..169
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        144..169
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   169 AA;  18904 MW;  9DE23B2C4DF61B71 CRC64;
     MFDIGFLELA VIAVIGLIVI GPERLPEAVR SGATWMAKIR KMMRDTRAEI EVQIGADEIR
     RELHNEQVMK SLEALKVTKD DIQQHILDAD RKMMLEQEAE EAKLQTPVSR RVAGDDPTLG
     TDDNVFTDPS YAHPPEEPSK VEADTSAETP QANNQDQQPT TKTEPANDR