SSRP_CLAMS
ID SSRP_CLAMS Reviewed; 158 AA.
AC B0RF94;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 08-APR-2008, 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=CMS2083;
OS Clavibacter michiganensis subsp. sepedonicus (strain ATCC 33113 / DSM 20744
OS / JCM 9667 / LMG 2889 / C-1) (Corynebacterium sepedonicum).
OC Bacteria; Actinobacteria; Micrococcales; Microbacteriaceae; Clavibacter.
OX NCBI_TaxID=31964;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33113 / DSM 20744 / JCM 9667 / LMG 2889 / C-1;
RX PubMed=18192393; DOI=10.1128/jb.01598-07;
RA Bentley S.D., Corton C., Brown S.E., Barron A., Clark L., Doggett J.,
RA Harris B., Ormond D., Quail M.A., May G., Francis D., Knudson D.,
RA Parkhill J., Ishimaru C.A.;
RT "Genome of the actinomycete plant pathogen Clavibacter michiganensis subsp.
RT sepedonicus suggests recent niche adaptation.";
RL J. Bacteriol. 190:2150-2160(2008).
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; AM849034; CAQ02179.1; -; Genomic_DNA.
DR RefSeq; WP_012037997.1; NZ_MZMN01000003.1.
DR AlphaFoldDB; B0RF94; -.
DR SMR; B0RF94; -.
DR STRING; 31964.CMS2083; -.
DR EnsemblBacteria; CAQ02179; CAQ02179; CMS2083.
DR GeneID; 56885622; -.
DR KEGG; cms:CMS2083; -.
DR eggNOG; COG0691; Bacteria.
DR HOGENOM; CLU_108953_2_1_11; -.
DR OMA; WTNHSAR; -.
DR Proteomes; UP000001318; 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; Reference proteome; RNA-binding.
FT CHAIN 1..158
FT /note="SsrA-binding protein"
FT /id="PRO_1000074346"
FT REGION 131..158
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 158 AA; 18211 MW; 1C2E03DB9CAE3C16 CRC64;
MPRERGEKVV ATNRKARHDY TIESTYEAGL VLTGTEVKSL RQGRASLVDG YAFVDAGEAW
LDAVHIPEYN QGTWNNHPVR RKRKLLLHKE QILKIHSKVK EGGYTVVPLQ LYFVDGRAKV
ELAIAKGKKE YDKRQTLRER QDKREADRAM SSHRRLGE
