SSRP_EDWI9
ID SSRP_EDWI9 Reviewed; 160 AA.
AC C5BAL3;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 28-JUL-2009, sequence version 1.
DT 25-MAY-2022, entry version 77.
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=NT01EI_3068;
OS Edwardsiella ictaluri (strain 93-146).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Hafniaceae; Edwardsiella.
OX NCBI_TaxID=634503;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=93-146;
RA Williams M.L., Gillaspy A.F., Dyer D.W., Thune R.L., Waldbieser G.C.,
RA Schuster S.C., Gipson J., Zaitshik J., Landry C., Lawrence M.L.;
RT "Complete genome sequence of Edwardsiella ictaluri 93-146.";
RL Submitted (MAR-2009) to the EMBL/GenBank/DDBJ databases.
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; CP001600; ACR70220.1; -; Genomic_DNA.
DR RefSeq; WP_015872308.1; NC_012779.2.
DR AlphaFoldDB; C5BAL3; -.
DR SMR; C5BAL3; -.
DR STRING; 67780.B6E78_07205; -.
DR EnsemblBacteria; ACR70220; ACR70220; NT01EI_3068.
DR GeneID; 7961839; -.
DR KEGG; eic:NT01EI_3068; -.
DR HOGENOM; CLU_108953_3_0_6; -.
DR OMA; WTNHSAR; -.
DR OrthoDB; 1720952at2; -.
DR Proteomes; UP000001485; 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..160
FT /note="SsrA-binding protein"
FT /id="PRO_1000201933"
FT REGION 137..160
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 160 AA; 18219 MW; A5FACA29078603B1 CRC64;
MTKKKAYKPG SATIAMNKRA RHDYFIEEEF EAGLSLQGWE VKSLRAGKAN ISESYILLQN
GEAFLFGATF TPLNVASSHV VCDPTRTRKL LLKERELASL FGSANRDGYT IVPLSLYWKN
AWAKLKIGVA KGKKEHDKRD DIKTREWKQD KARIMKNANR
