ID   SSRP_CHRVO              Reviewed;         151 AA.
AC   Q7NSG2;
DT   15-DEC-2003, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   25-MAY-2022, entry version 101.
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=CV_3464;
OS   Chromobacterium violaceum (strain ATCC 12472 / DSM 30191 / JCM 1249 / NBRC
OS   12614 / NCIMB 9131 / NCTC 9757).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales;
OC   Chromobacteriaceae; Chromobacterium.
OX   NCBI_TaxID=243365;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 12472 / DSM 30191 / JCM 1249 / NBRC 12614 / NCIMB 9131 / NCTC
RC   9757;
RX   PubMed=14500782; DOI=10.1073/pnas.1832124100;
RA   Vasconcelos A.T.R., de Almeida D.F., Hungria M., Guimaraes C.T.,
RA   Antonio R.V., Almeida F.C., de Almeida L.G.P., de Almeida R.,
RA   Alves-Gomes J.A., Andrade E.M., Araripe J., de Araujo M.F.F.,
RA   Astolfi-Filho S., Azevedo V., Baptista A.J., Bataus L.A.M., Batista J.S.,
RA   Belo A., van den Berg C., Bogo M., Bonatto S., Bordignon J., Brigido M.M.,
RA   Brito C.A., Brocchi M., Burity H.A., Camargo A.A., Cardoso D.D.P.,
RA   Carneiro N.P., Carraro D.M., Carvalho C.M.B., Cascardo J.C.M., Cavada B.S.,
RA   Chueire L.M.O., Creczynski-Pasa T.B., Cunha-Junior N.C., Fagundes N.,
RA   Falcao C.L., Fantinatti F., Farias I.P., Felipe M.S.S., Ferrari L.P.,
RA   Ferro J.A., Ferro M.I.T., Franco G.R., Freitas N.S.A., Furlan L.R.,
RA   Gazzinelli R.T., Gomes E.A., Goncalves P.R., Grangeiro T.B.,
RA   Grattapaglia D., Grisard E.C., Hanna E.S., Jardim S.N., Laurino J.,
RA   Leoi L.C.T., Lima L.F.A., Loureiro M.F., Lyra M.C.C.P., Madeira H.M.F.,
RA   Manfio G.P., Maranhao A.Q., Martins W.S., di Mauro S.M.Z.,
RA   de Medeiros S.R.B., Meissner R.V., Moreira M.A.M., Nascimento F.F.,
RA   Nicolas M.F., Oliveira J.G., Oliveira S.C., Paixao R.F.C., Parente J.A.,
RA   Pedrosa F.O., Pena S.D.J., Pereira J.O., Pereira M., Pinto L.S.R.C.,
RA   Pinto L.S., Porto J.I.R., Potrich D.P., Ramalho-Neto C.E., Reis A.M.M.,
RA   Rigo L.U., Rondinelli E., Santos E.B.P., Santos F.R., Schneider M.P.C.,
RA   Seuanez H.N., Silva A.M.R., da Silva A.L.C., Silva D.W., Silva R.,
RA   Simoes I.C., Simon D., Soares C.M.A., Soares R.B.A., Souza E.M.,
RA   Souza K.R.L., Souza R.C., Steffens M.B.R., Steindel M., Teixeira S.R.,
RA   Urmenyi T., Vettore A., Wassem R., Zaha A., Simpson A.J.G.;
RT   "The complete genome sequence of Chromobacterium violaceum reveals
RT   remarkable and exploitable bacterial adaptability.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:11660-11665(2003).
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; AE016825; AAQ61125.1; -; Genomic_DNA.
DR   RefSeq; WP_011137011.1; NC_005085.1.
DR   AlphaFoldDB; Q7NSG2; -.
DR   SMR; Q7NSG2; -.
DR   STRING; 243365.CV_3464; -.
DR   EnsemblBacteria; AAQ61125; AAQ61125; CV_3464.
DR   GeneID; 66364682; -.
DR   KEGG; cvi:CV_3464; -.
DR   eggNOG; COG0691; Bacteria.
DR   HOGENOM; CLU_108953_3_0_4; -.
DR   OMA; WTNHSAR; -.
DR   OrthoDB; 1720952at2; -.
DR   Proteomes; UP000001424; 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..151
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_0000102933"
FT   REGION          121..151
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        121..145
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   151 AA;  17460 MW;  B1E94CC644F97A0C CRC64;
     MSIIQNRKAF HDYFIEEKLE AGLVLEGWEV KAIRAGRVQL KESYVDWKNG AFWLIGCHIT
     PLQSASTHVK PDPVRPRKLL MSQAEINRFI GKVERAGYTM MALDLHYTKG NVKAEVGLAK
     GKKLHDKRDT EKDREWQREK QRVMKNQRGA A