SSRP_RENSM
ID SSRP_RENSM Reviewed; 156 AA.
AC A9WPU0;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-FEB-2008, 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};
GN OrderedLocusNames=RSal33209_1360;
OS Renibacterium salmoninarum (strain ATCC 33209 / DSM 20767 / JCM 11484 /
OS NBRC 15589 / NCIMB 2235).
OC Bacteria; Actinobacteria; Micrococcales; Micrococcaceae; Renibacterium.
OX NCBI_TaxID=288705;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33209 / DSM 20767 / JCM 11484 / NBRC 15589 / NCIMB 2235;
RX PubMed=18723615; DOI=10.1128/jb.00721-08;
RA Wiens G.D., Rockey D.D., Wu Z., Chang J., Levy R., Crane S., Chen D.S.,
RA Capri G.R., Burnett J.R., Sudheesh P.S., Schipma M.J., Burd H.,
RA Bhattacharyya A., Rhodes L.D., Kaul R., Strom M.S.;
RT "Genome sequence of the fish pathogen Renibacterium salmoninarum suggests
RT reductive evolution away from an environmental Arthrobacter ancestor.";
RL J. Bacteriol. 190:6970-6982(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; CP000910; ABY23097.1; -; Genomic_DNA.
DR RefSeq; WP_012244778.1; NC_010168.1.
DR AlphaFoldDB; A9WPU0; -.
DR SMR; A9WPU0; -.
DR STRING; 288705.RSal33209_1360; -.
DR EnsemblBacteria; ABY23097; ABY23097; RSal33209_1360.
DR KEGG; rsa:RSal33209_1360; -.
DR eggNOG; COG0691; Bacteria.
DR HOGENOM; CLU_108953_2_1_11; -.
DR OMA; WTNHSAR; -.
DR OrthoDB; 1720952at2; -.
DR Proteomes; UP000002007; 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..156
FT /note="SsrA-binding protein"
FT /id="PRO_1000074363"
SQ SEQUENCE 156 AA; 17960 MW; 9417EB26622F4631 CRC64;
MPKESGRKVV ATNRKARHEY HLGDTYEAGL ALMGTEVKSL REGRANLTDG FATFYGDELW
LEAVYIPEYL NGSWNNHSAR RRRKLLLHRA ELIKISHKTR EAGFTLVPLQ LYFLDGKAKV
EIALAKGKRD YDKRQALREA QDTRESLRAM REKNLG
