ID   TATB_MARN8              Reviewed;         151 AA.
AC   A1U673;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, 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=Maqu_3421;
OS   Marinobacter nauticus (strain ATCC 700491 / DSM 11845 / VT8) (Marinobacter
OS   aquaeolei).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Marinobacteraceae; Marinobacter.
OX   NCBI_TaxID=351348;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700491 / DSM 11845 / VT8;
RX   PubMed=21335390; DOI=10.1128/aem.01866-10;
RA   Singer E., Webb E.A., Nelson W.C., Heidelberg J.F., Ivanova N., Pati A.,
RA   Edwards K.J.;
RT   "Genomic potential of Marinobacter aquaeolei, a biogeochemical
RT   'opportunitroph'.";
RL   Appl. Environ. Microbiol. 77:2763-2771(2011).
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; CP000514; ABM20492.1; -; Genomic_DNA.
DR   RefSeq; WP_011786833.1; NC_008740.1.
DR   AlphaFoldDB; A1U673; -.
DR   SMR; A1U673; -.
DR   STRING; 351348.Maqu_3421; -.
DR   EnsemblBacteria; ABM20492; ABM20492; Maqu_3421.
DR   KEGG; maq:Maqu_3421; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_086034_1_1_6; -.
DR   OMA; GQFQEAM; -.
DR   OrthoDB; 2073616at2; -.
DR   Proteomes; UP000000998; 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..151
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301182"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          87..151
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        87..103
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        106..121
FT                   /note="Pro residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        135..151
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   151 AA;  16569 MW;  CF0A42AD550DBBAD CRC64;
     MFDIGFLELL ICGVIALLVL GPERLPTAAR AAGRWIGGAR RMVSQFTSEL DRQLKAEELR
     EELRKAGDVG LDDVEKTVRG ALDEAKKYEH MILPDDQTRK PRPAPATRRV TPPSPEAGEQ
     PEPPHEPVRD EAAASDQPSD SSPTSPSDKY S