ID   TATB_PSYCK              Reviewed;         231 AA.
AC   Q1Q8C2;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   03-AUG-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=Pcryo_2304;
OS   Psychrobacter cryohalolentis (strain ATCC BAA-1226 / DSM 17306 / VKM B-2378
OS   / K5).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Moraxellales; Moraxellaceae;
OC   Psychrobacter.
OX   NCBI_TaxID=335284;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1226 / DSM 17306 / VKM B-2378 / K5;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Dalin E., Tice H., Pitluck S., Brettin T., Bruce D.,
RA   Han C., Tapia R., Sims D.R., Gilna P., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Richardson P.;
RT   "Complete sequence of chromosome of Psychrobacter cryohalolentis K5.";
RL   Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000323; ABE76081.1; -; Genomic_DNA.
DR   RefSeq; WP_011514611.1; NC_007969.1.
DR   AlphaFoldDB; Q1Q8C2; -.
DR   SMR; Q1Q8C2; -.
DR   STRING; 335284.Pcryo_2304; -.
DR   KEGG; pcr:Pcryo_2304; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_1304040_0_0_6; -.
DR   OMA; PWENMWF; -.
DR   Proteomes; UP000002425; 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..231
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301214"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          77..168
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        96..110
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        111..125
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        145..168
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   231 AA;  26359 MW;  3FA6CC8D8B5802EF CRC64;
     MFDIGFSELL LFGVIALIVL GPEKLPQAAR TAGQWYAKIR RTVSTLQSEI EAELDLAETR
     QQMQKELAKI RQTEAEMRRE MAEMRGSMQE FESSKNQHLK ASRDLVDDAK PRQSSQGSSE
     NDDNRPVSPK SFDYAYDNNR QAEKPESSEQ PSAQGDNDSL KTDFNDNANP VIQTITTRPW
     ENMWFRLGAY DKARRLPQPP YLPNYKADIL LNSHIDSLLP KQASVNEQES H