ID   TATB_ECOK1              Reviewed;         171 AA.
AC   A1AI26;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 77.
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=Ecok1_38220;
GN   ORFNames=APECO1_2618;
OS   Escherichia coli O1:K1 / APEC.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=405955;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=17293413; DOI=10.1128/jb.01726-06;
RA   Johnson T.J., Kariyawasam S., Wannemuehler Y., Mangiamele P., Johnson S.J.,
RA   Doetkott C., Skyberg J.A., Lynne A.M., Johnson J.R., Nolan L.K.;
RT   "The genome sequence of avian pathogenic Escherichia coli strain O1:K1:H7
RT   shares strong similarities with human extraintestinal pathogenic E. coli
RT   genomes.";
RL   J. Bacteriol. 189:3228-3236(2007).
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; CP000468; ABJ03316.1; -; Genomic_DNA.
DR   RefSeq; WP_000459604.1; NC_008563.1.
DR   AlphaFoldDB; A1AI26; -.
DR   SMR; A1AI26; -.
DR   PRIDE; A1AI26; -.
DR   EnsemblBacteria; ABJ03316; ABJ03316; APECO1_2618.
DR   KEGG; ecv:APECO1_2618; -.
DR   HOGENOM; CLU_086034_1_0_6; -.
DR   OMA; GQFQEAM; -.
DR   Proteomes; UP000008216; 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..171
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301169"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          89..171
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        89..119
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        126..143
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   171 AA;  18424 MW;  A0484A1AE401645F CRC64;
     MFDIGFSELL LVFIIGLVVL GPQRLPVAVK TVAGWIRALR SLATTVQNEL TQELKLQEFQ
     DSLKKVEKAS LTSLTPELKA SMDELRQAAE SMKRSYVAND PEKASDEAHT IHNPVVKDNE
     TAHEGVTPAA AQTQASSPEQ KPETTPEPVV KPAADAEPKT AAPSPSSSDK P