ID   SSRP_BORGP              Reviewed;         150 AA.
AC   Q662X9;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   25-MAY-2022, entry version 94.
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=BG0033;
OS   Borrelia garinii subsp. bavariensis (strain ATCC BAA-2496 / DSM 23469 /
OS   PBi) (Borrelia bavariensis).
OC   Bacteria; Spirochaetes; Spirochaetales; Borreliaceae; Borreliella.
OX   NCBI_TaxID=290434;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-2496 / DSM 23469 / PBi;
RX   PubMed=15547252; DOI=10.1093/nar/gkh953;
RA   Gloeckner G., Lehmann R., Romualdi A., Pradella S., Schulte-Spechtel U.,
RA   Schilhabel M., Wilske B., Suehnel J., Platzer M.;
RT   "Comparative analysis of the Borrelia garinii genome.";
RL   Nucleic Acids Res. 32:6038-6046(2004).
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; CP000013; AAU06892.1; -; Genomic_DNA.
DR   RefSeq; WP_011193387.1; NZ_CP028872.1.
DR   AlphaFoldDB; Q662X9; -.
DR   SMR; Q662X9; -.
DR   STRING; 290434.BG0033; -.
DR   EnsemblBacteria; AAU06892; AAU06892; BG0033.
DR   KEGG; bga:BG0033; -.
DR   eggNOG; COG0691; Bacteria.
DR   HOGENOM; CLU_108953_0_0_12; -.
DR   OMA; WTNHSAR; -.
DR   OrthoDB; 1720952at2; -.
DR   Proteomes; UP000002276; 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; RNA-binding.
FT   CHAIN           1..150
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_0000102914"
SQ   SEQUENCE   150 AA;  17804 MW;  8DD82DA214197307 CRC64;
     MNTNTLLLEN KKAKFNYFIE EKVSCGIVLK GTEVKSIKAK KLSFNNSFAS IKKEEFWLEN
     LHVSKYKEGN IFNHDELRPR KLLIKKQELQ RLKKFKEKEG YTLIPISFYL KKSIIKVEVG
     ICKGKKLYDK REILKQKSIK KDLSREIKYK