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LEPA_STRMU
ID   LEPA_STRMU              Reviewed;         611 AA.
AC   Q8DTF3;
DT   19-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 121.
DE   RecName: Full=Elongation factor 4 {ECO:0000255|HAMAP-Rule:MF_00071};
DE            Short=EF-4 {ECO:0000255|HAMAP-Rule:MF_00071};
DE            EC=3.6.5.n1 {ECO:0000255|HAMAP-Rule:MF_00071};
DE   AltName: Full=Ribosomal back-translocase LepA {ECO:0000255|HAMAP-Rule:MF_00071};
GN   Name=lepA {ECO:0000255|HAMAP-Rule:MF_00071}; OrderedLocusNames=SMU_1394;
OS   Streptococcus mutans serotype c (strain ATCC 700610 / UA159).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=210007;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700610 / UA159;
RX   PubMed=12397186; DOI=10.1073/pnas.172501299;
RA   Ajdic D.J., McShan W.M., McLaughlin R.E., Savic G., Chang J., Carson M.B.,
RA   Primeaux C., Tian R., Kenton S., Jia H.G., Lin S.P., Qian Y., Li S.,
RA   Zhu H., Najar F.Z., Lai H., White J., Roe B.A., Ferretti J.J.;
RT   "Genome sequence of Streptococcus mutans UA159, a cariogenic dental
RT   pathogen.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:14434-14439(2002).
CC   -!- FUNCTION: Required for accurate and efficient protein synthesis under
CC       certain stress conditions. May act as a fidelity factor of the
CC       translation reaction, by catalyzing a one-codon backward translocation
CC       of tRNAs on improperly translocated ribosomes. Back-translocation
CC       proceeds from a post-translocation (POST) complex to a pre-
CC       translocation (PRE) complex, thus giving elongation factor G a second
CC       chance to translocate the tRNAs correctly. Binds to ribosomes in a GTP-
CC       dependent manner. {ECO:0000255|HAMAP-Rule:MF_00071}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=GTP + H2O = GDP + H(+) + phosphate; Xref=Rhea:RHEA:19669,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:58189; EC=3.6.5.n1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00071};
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_00071};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_00071};
CC       Cytoplasmic side {ECO:0000255|HAMAP-Rule:MF_00071}.
CC   -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC       superfamily. Classic translation factor GTPase family. LepA subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00071}.
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DR   EMBL; AE014133; AAN59060.1; -; Genomic_DNA.
DR   RefSeq; NP_721754.1; NC_004350.2.
DR   RefSeq; WP_002262717.1; NC_004350.2.
DR   AlphaFoldDB; Q8DTF3; -.
DR   SMR; Q8DTF3; -.
DR   STRING; 210007.SMU_1394; -.
DR   PRIDE; Q8DTF3; -.
DR   EnsemblBacteria; AAN59060; AAN59060; SMU_1394.
DR   GeneID; 66819192; -.
DR   KEGG; smu:SMU_1394; -.
DR   PATRIC; fig|210007.7.peg.1240; -.
DR   eggNOG; COG0481; Bacteria.
DR   HOGENOM; CLU_009995_3_3_9; -.
DR   OMA; MVQIAIQ; -.
DR   PhylomeDB; Q8DTF3; -.
DR   Proteomes; UP000002512; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003924; F:GTPase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043022; F:ribosome binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003746; F:translation elongation factor activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0045727; P:positive regulation of translation; IEA:UniProtKB-UniRule.
DR   CDD; cd03709; lepA_C; 1.
DR   Gene3D; 3.30.70.2570; -; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00071; LepA; 1.
DR   InterPro; IPR006297; EF-4.
DR   InterPro; IPR041095; EFG_II.
DR   InterPro; IPR035647; EFG_III/V.
DR   InterPro; IPR000640; EFG_V-like.
DR   InterPro; IPR004161; EFTu-like_2.
DR   InterPro; IPR031157; G_TR_CS.
DR   InterPro; IPR038363; LepA_C_sf.
DR   InterPro; IPR013842; LepA_CTD.
DR   InterPro; IPR035654; LepA_IV.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR005225; Small_GTP-bd_dom.
DR   InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR   InterPro; IPR009000; Transl_B-barrel_sf.
DR   PANTHER; PTHR43512; PTHR43512; 1.
DR   Pfam; PF00679; EFG_C; 1.
DR   Pfam; PF14492; EFG_III; 1.
DR   Pfam; PF00009; GTP_EFTU; 1.
DR   Pfam; PF03144; GTP_EFTU_D2; 1.
DR   Pfam; PF06421; LepA_C; 1.
DR   PRINTS; PR00315; ELONGATNFCT.
DR   SMART; SM00838; EFG_C; 1.
DR   SUPFAM; SSF50447; SSF50447; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   SUPFAM; SSF54980; SSF54980; 2.
DR   TIGRFAMs; TIGR01393; lepA; 1.
DR   TIGRFAMs; TIGR00231; small_GTP; 1.
DR   PROSITE; PS00301; G_TR_1; 1.
DR   PROSITE; PS51722; G_TR_2; 1.
PE   3: Inferred from homology;
KW   Cell membrane; GTP-binding; Hydrolase; Membrane; Nucleotide-binding;
KW   Protein biosynthesis; Reference proteome.
FT   CHAIN           1..611
FT                   /note="Elongation factor 4"
FT                   /id="PRO_0000176352"
FT   DOMAIN          11..193
FT                   /note="tr-type G"
FT   BINDING         23..28
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00071"
FT   BINDING         140..143
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00071"
SQ   SEQUENCE   611 AA;  68357 MW;  BAC0EA1CD09064AD CRC64;
     MTIEQLKNRQ EKIRNFSIIA HIDHGKSTLA DRILEQTETV SSREMQAQLL DSMDLERERG
     ITIKLNAIEL NYKAKNGETY IFHLIDTPGH VDFTYEVSRS LAACEGAILV VDAAQGIEAQ
     TLANVYLALD NDLEILPVIN KIDLPAADPE RVRTEIEDVI GLDASEAVLA SAKAGIGIEE
     ILEQIVEKVP APKGDVEAPL KALIFDSVYD AYRGVILQIR VMDGMVKPGD KIELMSNGKT
     FDVTEVGIFT PKAVNRDFLA TGDVGYLAAS IKTVADTRVG DTVTLADCPA EAPLHGYKQL
     NPMVFAGIYP IDSSKYNDMR EALEKLQLND ASLHFEPETS QALGFGFRCG FLGLLHMDVI
     QERLEREFNI DLIMTAPSVV YHVYTTDGER LEVSNPSEFP DPTKVDSIEE PYVKAQIMVP
     QEYVGAVMEL SQRKRGDFVT MDYIDNNRVN VIYQIPLAEI VFDFFDKLKS STRGYASFDY
     DISEYRKSKL VKMDILLNGD KVDALSFIVH KEFAYERGKL IVEKLKKIIP RQQFEVPIQA
     AIGQKIVARS DIKALRKNVL AKCYGGDVSR KRKLLEKQKA GKKRMKSIGS VEVPQEAFLS
     VLSMDDDDKK K
 
 
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