ID   TATB_NITHX              Reviewed;         178 AA.
AC   Q1QME4;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   25-MAY-2022, entry version 81.
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=Nham_1789;
OS   Nitrobacter hamburgensis (strain DSM 10229 / NCIMB 13809 / X14).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Nitrobacter.
OX   NCBI_TaxID=323097;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 10229 / NCIMB 13809 / X14;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Ivanova N., Ward B., Arp D., Klotz M., Stein L.,
RA   O'Mullan G., Starkenburg S., Sayavedra L., Poret-Peterson A.T.,
RA   Gentry M.E., Bruce D., Richardson P.;
RT   "Complete sequence of chromosome of Nitrobacter hamburgensis X14.";
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; CP000319; ABE62603.1; -; Genomic_DNA.
DR   RefSeq; WP_011510285.1; NC_007964.1.
DR   AlphaFoldDB; Q1QME4; -.
DR   SMR; Q1QME4; -.
DR   STRING; 323097.Nham_1789; -.
DR   EnsemblBacteria; ABE62603; ABE62603; Nham_1789.
DR   KEGG; nha:Nham_1789; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_086034_1_3_5; -.
DR   OMA; PLESMIA; -.
DR   OrthoDB; 2073616at2; -.
DR   Proteomes; UP000001953; 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..178
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000301197"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          77..178
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   178 AA;  18718 MW;  4A0CC828B6EF5DB8 CRC64;
     MFDIGWSELV VIAVVALIAI GPKELPGVLR MVGQWMGKAR RMAAEFQGQF NEAMREADMA
     ELKKSFDEVR DATSGLTSGN LMTKLTDSLG EPPKLEDLDK PAANRPAADM SAASANDVPA
     SGSIAPEAAI PKTGTEADAK ALASEPLAIT PEFQHATPEP APATHETPHE AVKDAKAS