ID   SSRP_NEIG1              Reviewed;         148 AA.
AC   Q5F816;
DT   07-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   07-JUN-2005, sequence version 2.
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=NGO0986;
OS   Neisseria gonorrhoeae (strain ATCC 700825 / FA 1090).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC   Neisseria.
OX   NCBI_TaxID=242231;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700825 / FA 1090;
RA   Lewis L.A., Gillaspy A.F., McLaughlin R.E., Gipson M., Ducey T.F.,
RA   Ownbey T., Hartman K., Nydick C., Carson M.B., Vaughn J., Thomson C.,
RA   Song L., Lin S., Yuan X., Najar F., Zhan M., Ren Q., Zhu H., Qi S.,
RA   Kenton S.M., Lai H., White J.D., Clifton S., Roe B.A., Dyer D.W.;
RT   "The complete genome sequence of Neisseria gonorrhoeae.";
RL   Submitted (MAR-2003) 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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAW89671.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AE004969; AAW89671.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_010358325.1; NC_002946.2.
DR   AlphaFoldDB; Q5F816; -.
DR   SMR; Q5F816; -.
DR   STRING; 242231.NGO_0986; -.
DR   EnsemblBacteria; AAW89671; AAW89671; NGO_0986.
DR   GeneID; 66753307; -.
DR   KEGG; ngo:NGO_0986; -.
DR   HOGENOM; CLU_108953_3_0_4; -.
DR   Proteomes; UP000000535; 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..148
FT                   /note="SsrA-binding protein"
FT                   /id="PRO_0000102992"
FT   REGION          119..148
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        119..142
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   148 AA;  17193 MW;  B80FDCF5661B6A1C CRC64;
     MAIANNKKAF HDFFIEDRIE AGLVLEGWEV KAIRAARVQL KESYIYWKKD AFYLVGCHIT
     ALPTASTHIK PDAVRPRKLL LKQSEINKLI GKTERAGYTI VPLDLHFSRG KIKMEIGLAK
     GKKQHDKRQS MKEADWKREK QRLIKHTR