ID   TATB_STRCO              Reviewed;         161 AA.
AC   Q9FBK8;
DT   01-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2001, sequence version 1.
DT   25-MAY-2022, entry version 94.
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=SCO5150;
GN   ORFNames=SCP8.13;
OS   Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces; Streptomyces albidoflavus group.
OX   NCBI_TaxID=100226;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=12000953; DOI=10.1038/417141a;
RA   Bentley S.D., Chater K.F., Cerdeno-Tarraga A.-M., Challis G.L.,
RA   Thomson N.R., James K.D., Harris D.E., Quail M.A., Kieser H., Harper D.,
RA   Bateman A., Brown S., Chandra G., Chen C.W., Collins M., Cronin A.,
RA   Fraser A., Goble A., Hidalgo J., Hornsby T., Howarth S., Huang C.-H.,
RA   Kieser T., Larke L., Murphy L.D., Oliver K., O'Neil S., Rabbinowitsch E.,
RA   Rajandream M.A., Rutherford K.M., Rutter S., Seeger K., Saunders D.,
RA   Sharp S., Squares R., Squares S., Taylor K., Warren T., Wietzorrek A.,
RA   Woodward J.R., Barrell B.G., Parkhill J., Hopwood D.A.;
RT   "Complete genome sequence of the model actinomycete Streptomyces coelicolor
RT   A3(2).";
RL   Nature 417:141-147(2002).
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 membrane {ECO:0000255|HAMAP-Rule:MF_00237};
CC       Single-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00237}.
CC   -!- SIMILARITY: Belongs to the TatB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00237}.
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DR   EMBL; AL939122; CAC01351.1; -; Genomic_DNA.
DR   RefSeq; NP_629298.1; NC_003888.3.
DR   RefSeq; WP_011030086.1; NZ_VNID01000008.1.
DR   AlphaFoldDB; Q9FBK8; -.
DR   SMR; Q9FBK8; -.
DR   STRING; 100226.SCO5150; -.
DR   TCDB; 2.A.64.2.2; the twin arginine targeting (tat) family.
DR   GeneID; 1100591; -.
DR   KEGG; sco:SCO5150; -.
DR   PATRIC; fig|100226.15.peg.5233; -.
DR   eggNOG; COG1826; Bacteria.
DR   HOGENOM; CLU_086034_2_1_11; -.
DR   OMA; PRAVITK; -.
DR   PhylomeDB; Q9FBK8; -.
DR   Proteomes; UP000001973; 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.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; Protein transport; Reference proteome;
KW   Translocation; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..161
FT                   /note="Sec-independent protein translocase protein TatB"
FT                   /id="PRO_0000192672"
FT   TRANSMEM        2..22
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00237"
FT   REGION          102..161
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        107..128
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        131..161
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   161 AA;  17757 MW;  0510C0D221BEEEF3 CRC64;
     MFNDIGALEL VTLVVLAVLV FGPDKLPKVI QDVTRTIRKI REFSDSAKQD IRQELGPEFK
     DFEFEDLNPK TFIRKQLDNE ELGLKEIRNG FDLKKEMAEV TDAVHGRDAE SSSSGSSSGS
     SSAASGNGRV DMSKKPEKPE KPGKTDKPAA DDRPPFDMDA T