SSRP_BEII9
ID SSRP_BEII9 Reviewed; 158 AA.
AC B2IDQ9;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-JUN-2008, sequence version 1.
DT 25-MAY-2022, entry version 69.
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=Bind_1869;
OS Beijerinckia indica subsp. indica (strain ATCC 9039 / DSM 1715 / NCIMB
OS 8712).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Beijerinckiaceae; Beijerinckia.
OX NCBI_TaxID=395963;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 9039 / DSM 1715 / NCIMB 8712;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., LaButti K., Schmutz J., Larimer F.,
RA Land M., Hauser L., Kyrpides N., Mikhailova N., Dunfield P.F., Dedysh S.N.,
RA Liesack W., Saw J.H., Alam M., Chen Y., Murrell J.C., Richardson P.;
RT "Complete sequence of chromosome of Beijerinckia indica subsp. indica ATCC
RT 9039.";
RL Submitted (MAR-2008) 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; CP001016; ACB95493.1; -; Genomic_DNA.
DR RefSeq; WP_012384850.1; NC_010581.1.
DR AlphaFoldDB; B2IDQ9; -.
DR SMR; B2IDQ9; -.
DR STRING; 395963.Bind_1869; -.
DR EnsemblBacteria; ACB95493; ACB95493; Bind_1869.
DR KEGG; bid:Bind_1869; -.
DR eggNOG; COG0691; Bacteria.
DR HOGENOM; CLU_108953_0_1_5; -.
DR OMA; WTNHSAR; -.
DR OrthoDB; 1720952at2; -.
DR Proteomes; UP000001695; 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_1000090136"
FT REGION 133..158
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 158 AA; 18092 MW; AB0A53E192685BFC CRC64;
MAAKKPSAFK IAAENRKARY NYEIGETFEA GLMLTGTEVK SLRTGKATIA ESYASVDREG
EVFLVNATIP EYLEANRFNH APKRPRKLLL HGREIAKLSQ GVERQGMTIV PLKIYFNDRG
RAKIEIALAR GKQLHDKRET EKKRDWNKEK GRLLRDKH
