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SSRP_LISW6
ID   SSRP_LISW6              Reviewed;         154 AA.
AC   A0ALD2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   28-NOV-2006, sequence version 1.
DT   25-MAY-2022, entry version 86.
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}; OrderedLocusNames=lwe2396;
OS   Listeria welshimeri serovar 6b (strain ATCC 35897 / DSM 20650 / CIP 8149 /
OS   NCTC 11857 / SLCC 5334 / V8).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae; Listeria.
OX   NCBI_TaxID=386043;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35897 / DSM 20650 / CIP 8149 / NCTC 11857 / SLCC 5334 / V8;
RX   PubMed=16936040; DOI=10.1128/jb.00758-06;
RA   Hain T., Steinweg C., Kuenne C.T., Billion A., Ghai R., Chatterjee S.S.,
RA   Domann E., Kaerst U., Goesmann A., Bekel T., Bartels D., Kaiser O.,
RA   Meyer F., Puehler A., Weisshaar B., Wehland J., Liang C., Dandekar T.,
RA   Lampidis R., Kreft J., Goebel W., Chakraborty T.;
RT   "Whole-genome sequence of Listeria welshimeri reveals common steps in
RT   genome reduction with Listeria innocua as compared to Listeria
RT   monocytogenes.";
RL   J. Bacteriol. 188:7405-7415(2006).
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; AM263198; CAK21814.1; -; Genomic_DNA.
DR   RefSeq; WP_003723350.1; NC_008555.1.
DR   AlphaFoldDB; A0ALD2; -.
DR   SMR; A0ALD2; -.
DR   STRING; 386043.lwe2396; -.
DR   EnsemblBacteria; CAK21814; CAK21814; lwe2396.
DR   GeneID; 61190317; -.
DR   GeneID; 67411637; -.
DR   KEGG; lwe:lwe2396; -.
DR   eggNOG; COG0691; Bacteria.
DR   HOGENOM; CLU_108953_0_0_9; -.
DR   OMA; WTNHSAR; -.
DR   OrthoDB; 1720952at2; -.
DR   Proteomes; UP000000779; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0070929; P:trans-translation; IEA:UniProtKB-UniRule.
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; RNA-binding.
FT   CHAIN           1..154
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_1000002080"
FT   REGION          131..154
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   154 AA;  17924 MW;  FD88406D74C55721 CRC64;
     MPKGDGKLVA QNKKARHDYA IEETFEAGIV LQGTEIKSVR NARVNLKDSY ARIDKGEIFL
     HNMHISPYEQ GNRYNHDPLR TRKLLLHKKQ ISRLIGETKE SGYSIVPLKM YIKDGYAKVL
     IGVARGKKKY DKRQDLKQKE AKRDIERAFK ERQQ
 
 
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