ID   EFTU_SYNY3              Reviewed;         399 AA.
AC   P74227;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   04-NOV-2026, entry version 160.
DE   RecName: Full=Elongation factor Tu {ECO:0000255|HAMAP-Rule:MF_00118};
DE            Short=EF-Tu {ECO:0000255|HAMAP-Rule:MF_00118};
DE            EC=3.6.5.3 {ECO:0000255|HAMAP-Rule:MF_00118};
GN   Name=tuf {ECO:0000255|HAMAP-Rule:MF_00118}; Synonyms=tufA;
GN   OrderedLocusNames=sll1099;
OS   Synechocystis sp. (strain ATCC 27184 / PCC 6803 / Kazusa).
OC   Bacteria; Bacillati; Cyanobacteriota; Cyanophyceae; Synechococcales;
OC   Merismopediaceae; Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27184 / PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
CC   -!- FUNCTION: GTP hydrolase that promotes the GTP-dependent binding of
CC       aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00118}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=GTP + H2O = GDP + phosphate + H(+); Xref=Rhea:RHEA:19669,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:58189; EC=3.6.5.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00118};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:19670;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00118};
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00118}.
CC   -!- INTERACTION:
CC       P74227; P52231: trxA; NbExp=5; IntAct=EBI-862703, EBI-862916;
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00118}.
CC   -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC       superfamily. Classic translation factor GTPase family. EF-Tu/EF-1A
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00118}.
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DR   EMBL; BA000022; BAA18321.1; -; Genomic_DNA.
DR   PIR; S75862; S75862.
DR   AlphaFoldDB; P74227; -.
DR   SMR; P74227; -.
DR   FunCoup; P74227; 504.
DR   IntAct; P74227; 4.
DR   STRING; 1148.gene:10499197; -.
DR   PaxDb; 1148-gene:10499197; -.
DR   EnsemblBacteria; BAA18321; BAA18321; BAA18321.
DR   KEGG; syn:sll1099; -.
DR   eggNOG; COG0050; Bacteria.
DR   InParanoid; P74227; -.
DR   OMA; AACIEYQ; -.
DR   PhylomeDB; P74227; -.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; 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:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003746; F:translation elongation factor activity; IBA:GO_Central.
DR   GO; GO:0006414; P:translational elongation; IBA:GO_Central.
DR   CDD; cd01884; EF_Tu; 1.
DR   CDD; cd03697; EFTU_II; 1.
DR   CDD; cd03707; EFTU_III; 1.
DR   FunFam; 2.40.30.10:FF:000001; Elongation factor Tu; 1.
DR   FunFam; 2.40.30.10:FF:000046; Elongation factor Tu; 1.
DR   FunFam; 3.40.50.300:FF:000003; Elongation factor Tu; 1.
DR   Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR   Gene3D; 2.40.30.10; Translation factors; 2.
DR   HAMAP; MF_00118_B; EF_Tu_B; 1.
DR   InterPro; IPR041709; EF-Tu_GTP-bd.
DR   InterPro; IPR050055; EF-Tu_GTPase.
DR   InterPro; IPR004161; EFTu-like_2.
DR   InterPro; IPR033720; EFTU_2.
DR   InterPro; IPR031157; G_TR_CS.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR005225; Small_GTP-bd.
DR   InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR   InterPro; IPR009000; Transl_B-barrel_sf.
DR   InterPro; IPR009001; Transl_elong_EF1A/Init_IF2_C.
DR   InterPro; IPR004541; Transl_elong_EFTu/EF1A_bac/org.
DR   InterPro; IPR004160; Transl_elong_EFTu/EF1A_C.
DR   NCBIfam; TIGR00485; EF-Tu; 1.
DR   NCBIfam; NF000766; PRK00049.1; 1.
DR   NCBIfam; NF009372; PRK12735.1; 1.
DR   NCBIfam; NF009373; PRK12736.1; 1.
DR   NCBIfam; TIGR00231; small_GTP; 1.
DR   PANTHER; PTHR43721:SF22; ELONGATION FACTOR TU, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR43721; ELONGATION FACTOR TU-RELATED; 1.
DR   Pfam; PF00009; GTP_EFTU; 1.
DR   Pfam; PF03144; GTP_EFTU_D2; 1.
DR   Pfam; PF03143; GTP_EFTU_D3; 1.
DR   PRINTS; PR00315; ELONGATNFCT.
DR   SUPFAM; SSF50465; EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain; 1.
DR   SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR   SUPFAM; SSF50447; Translation proteins; 1.
DR   PROSITE; PS00301; G_TR_1; 1.
DR   PROSITE; PS51722; G_TR_2; 1.
PE   1: Evidence at protein level;
KW   Cytoplasm; Elongation factor; GTP-binding; Hydrolase; Magnesium;
KW   Metal-binding; Nucleotide-binding; Protein biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..399
FT                   /note="Elongation factor Tu"
FT                   /id="PRO_0000091418"
FT   DOMAIN          10..204
FT                   /note="tr-type G"
FT   REGION          19..26
FT                   /note="G1"
FT                   /evidence="ECO:0000250"
FT   REGION          60..64
FT                   /note="G2"
FT                   /evidence="ECO:0000250"
FT   REGION          81..84
FT                   /note="G3"
FT                   /evidence="ECO:0000250"
FT   REGION          136..139
FT                   /note="G4"
FT                   /evidence="ECO:0000250"
FT   REGION          174..176
FT                   /note="G5"
FT                   /evidence="ECO:0000250"
FT   BINDING         19..26
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00118"
FT   BINDING         26
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00118"
FT   BINDING         81..85
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00118"
FT   BINDING         136..139
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00118"
SQ   SEQUENCE   399 AA;  43733 MW;  4F059A997D89A58C CRC64;
     MARAKFERTK DHVNIGTIGH VDHGKTTLTA AITMTLAELG GAKARKYEDI DAAPEEKARG
     ITINTAHVEY ETDSRHYAHV DCPGHADYVK NMITGAAQMD GAILVVSAAD GPMPQTREHI
     LLAKQVGVPK LVVFLNKKDM VDDEELLELV ELEVRELLSD YDFPGDDIPI VAGSALKAIE
     GEKEYKDAIL ELMKAVDDYI DTPEREVDKP FLMAVEDVFS ITGRGTVATG RIERGKVKVG
     EEISIVGIKD TRKATVTGVE MFQKTLEEGM AGDNVGLLLR GIQKEDIERG MVLAKPGSIT
     PHTEFEGEVY VLKKEEGGRH TPFFANYRPQ FYVRTTDVTG TIKSYTADDG SAVEMVMPGD
     RIKMTVELIN PIAIEQGMRF AIREGGRTIG AGVVSKILK
//