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SSRP_CLOBH
ID   SSRP_CLOBH              Reviewed;         156 AA.
AC   A5HYC7; A7G0D5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=SsrA-binding protein {ECO:0000255|HAMAP-Rule:MF_00023};
DE   AltName: Full=Small protein B {ECO:0000255|HAMAP-Rule:MF_00023};
GN   Name=smpB {ECO:0000255|HAMAP-Rule:MF_00023};
GN   OrderedLocusNames=CBO0234, CLC_0290;
OS   Clostridium botulinum (strain Hall / ATCC 3502 / NCTC 13319 / Type A).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=441771;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Hall / ATCC 3502 / NCTC 13319 / Type A;
RX   PubMed=17519437; DOI=10.1101/gr.6282807;
RA   Sebaihia M., Peck M.W., Minton N.P., Thomson N.R., Holden M.T.G.,
RA   Mitchell W.J., Carter A.T., Bentley S.D., Mason D.R., Crossman L.,
RA   Paul C.J., Ivens A., Wells-Bennik M.H.J., Davis I.J., Cerdeno-Tarraga A.M.,
RA   Churcher C., Quail M.A., Chillingworth T., Feltwell T., Fraser A.,
RA   Goodhead I., Hance Z., Jagels K., Larke N., Maddison M., Moule S.,
RA   Mungall K., Norbertczak H., Rabbinowitsch E., Sanders M., Simmonds M.,
RA   White B., Whithead S., Parkhill J.;
RT   "Genome sequence of a proteolytic (Group I) Clostridium botulinum strain
RT   Hall A and comparative analysis of the clostridial genomes.";
RL   Genome Res. 17:1082-1092(2007).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Hall / ATCC 3502 / NCTC 13319 / Type A;
RX   PubMed=18060065; DOI=10.1371/journal.pone.0001271;
RA   Smith T.J., Hill K.K., Foley B.T., Detter J.C., Munk A.C., Bruce D.C.,
RA   Doggett N.A., Smith L.A., Marks J.D., Xie G., Brettin T.S.;
RT   "Analysis of the neurotoxin complex genes in Clostridium botulinum A1-A4
RT   and B1 strains: BoNT/A3, /Ba4 and /B1 clusters are located within
RT   plasmids.";
RL   PLoS ONE 2:E1271-E1271(2007).
CC   -!- FUNCTION: Required for rescue of stalled ribosomes mediated by trans-
CC       translation. Binds to transfer-messenger RNA (tmRNA), required for
CC       stable association of tmRNA with ribosomes. tmRNA and SmpB together
CC       mimic tRNA shape, replacing the anticodon stem-loop with SmpB. tmRNA is
CC       encoded by the ssrA gene; the 2 termini fold to resemble tRNA(Ala) and
CC       it encodes a 'tag peptide', a short internal open reading frame. During
CC       trans-translation Ala-aminoacylated tmRNA acts like a tRNA, entering
CC       the A-site of stalled ribosomes, displacing the stalled mRNA. The
CC       ribosome then switches to translate the ORF on the tmRNA; the nascent
CC       peptide is terminated with the 'tag peptide' encoded by the tmRNA and
CC       targeted for degradation. The ribosome is freed to recommence
CC       translation, which seems to be the essential function of trans-
CC       translation. {ECO:0000255|HAMAP-Rule:MF_00023}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00023}.
CC       Note=The tmRNA-SmpB complex associates with stalled 70S ribosomes.
CC       {ECO:0000255|HAMAP-Rule:MF_00023}.
CC   -!- SIMILARITY: Belongs to the SmpB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00023}.
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DR   EMBL; CP000727; ABS36342.1; -; Genomic_DNA.
DR   EMBL; AM412317; CAL81786.1; -; Genomic_DNA.
DR   RefSeq; WP_003356515.1; NC_009698.1.
DR   RefSeq; YP_001252778.1; NC_009495.1.
DR   RefSeq; YP_001386190.1; NC_009698.1.
DR   AlphaFoldDB; A5HYC7; -.
DR   SMR; A5HYC7; -.
DR   GeneID; 5184489; -.
DR   KEGG; cbh:CLC_0290; -.
DR   KEGG; cbo:CBO0234; -.
DR   PATRIC; fig|413999.7.peg.232; -.
DR   HOGENOM; CLU_108953_0_0_9; -.
DR   OMA; WTNHSAR; -.
DR   PRO; PR:A5HYC7; -.
DR   Proteomes; UP000001986; Chromosome.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0003723; F:RNA binding; IBA:GO_Central.
DR   GO; GO:0070929; P:trans-translation; IEA:UniProtKB-UniRule.
DR   GO; GO:0070930; P:trans-translation-dependent protein tagging; IBA:GO_Central.
DR   CDD; cd09294; SmpB; 1.
DR   Gene3D; 2.40.280.10; -; 1.
DR   HAMAP; MF_00023; SmpB; 1.
DR   InterPro; IPR023620; SmpB.
DR   InterPro; IPR000037; SsrA-bd_prot.
DR   InterPro; IPR020081; SsrA-bd_prot_CS.
DR   PANTHER; PTHR30308; PTHR30308; 1.
DR   Pfam; PF01668; SmpB; 1.
DR   SUPFAM; SSF74982; SSF74982; 1.
DR   TIGRFAMs; TIGR00086; smpB; 1.
DR   PROSITE; PS01317; SSRP; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Reference proteome; RNA-binding.
FT   CHAIN           1..156
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_1000002035"
SQ   SEQUENCE   156 AA;  18155 MW;  4B7AE2C40A54102E CRC64;
     MSKKKGSNTL AENRKARHDY FIEETYEAGI ELVGTEVKSI RQGKANLKDS YAEIRNGEVF
     VRNMHISPYE QGNIYNKDPL RDRKLLLHKS EIYKLVGFTT QQGYTLIPLS LYLKHGRVKV
     SLAVAKGKKN YDKRDAMLEK AAKREMDRQI KERSRY
 
 
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