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SSRP_SORC5
ID   SSRP_SORC5              Reviewed;         162 AA.
AC   A9G109;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 78.
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=sce2300;
OS   Sorangium cellulosum (strain So ce56) (Polyangium cellulosum (strain So
OS   ce56)).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Myxococcales; Sorangiineae;
OC   Polyangiaceae; Sorangium.
OX   NCBI_TaxID=448385;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=So ce56;
RX   PubMed=17965706; DOI=10.1038/nbt1354;
RA   Schneiker S., Perlova O., Kaiser O., Gerth K., Alici A., Altmeyer M.O.,
RA   Bartels D., Bekel T., Beyer S., Bode E., Bode H.B., Bolten C.J.,
RA   Choudhuri J.V., Doss S., Elnakady Y.A., Frank B., Gaigalat L., Goesmann A.,
RA   Groeger C., Gross F., Jelsbak L., Jelsbak L., Kalinowski J., Kegler C.,
RA   Knauber T., Konietzny S., Kopp M., Krause L., Krug D., Linke B., Mahmud T.,
RA   Martinez-Arias R., McHardy A.C., Merai M., Meyer F., Mormann S.,
RA   Munoz-Dorado J., Perez J., Pradella S., Rachid S., Raddatz G., Rosenau F.,
RA   Rueckert C., Sasse F., Scharfe M., Schuster S.C., Suen G.,
RA   Treuner-Lange A., Velicer G.J., Vorholter F.-J., Weissman K.J., Welch R.D.,
RA   Wenzel S.C., Whitworth D.E., Wilhelm S., Wittmann C., Bloecker H.,
RA   Puehler A., Mueller R.;
RT   "Complete genome sequence of the myxobacterium Sorangium cellulosum.";
RL   Nat. Biotechnol. 25:1281-1289(2007).
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; AM746676; CAN92459.1; -; Genomic_DNA.
DR   RefSeq; WP_012234932.1; NC_010162.1.
DR   AlphaFoldDB; A9G109; -.
DR   SMR; A9G109; -.
DR   STRING; 448385.sce2300; -.
DR   EnsemblBacteria; CAN92459; CAN92459; sce2300.
DR   KEGG; scl:sce2300; -.
DR   eggNOG; COG0691; Bacteria.
DR   HOGENOM; CLU_108953_2_1_7; -.
DR   OMA; WTNHSAR; -.
DR   OrthoDB; 1720952at2; -.
DR   BioCyc; SCEL448385:SCE_RS11790-MON; -.
DR   Proteomes; UP000002139; 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   PANTHER; PTHR30308; PTHR30308; 1.
DR   Pfam; PF01668; SmpB; 1.
DR   SUPFAM; SSF74982; SSF74982; 1.
DR   TIGRFAMs; TIGR00086; smpB; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Reference proteome; RNA-binding.
FT   CHAIN           1..162
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_0000331098"
SQ   SEQUENCE   162 AA;  17903 MW;  D447942CB383FD17 CRC64;
     MPKEKARPGE TLIARNKRAG FNYDLGDRFE AGIVLKGSEV KMLRAGKADL TDSFCTVLRG
     EVFLHGVSIA AMASAAFGHV PKGARKLLLH RREIERIDLS IAREGMTAVA TRLYFKSGLA
     KVEIALARGK KSHDKRETIK EQDAEREMRA VVVHGQRGYG RA
 
 
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