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Literature summary for 3.6.5.3 extracted from

  • Lin, J.; Gagnon, M.G.; Bulkley, D.; Steitz, T.A.
    Conformational changes of elongation factor G on the ribosome during tRNA translocation (2015), Cell, 160, 219-227 .
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
gene fusA, recombinant expression of the N-terminal domain (74 residues) of Thermus thermophilus ribosomal protein L9 fused to the N-terminus of EF-G connecting residues 1-74 of ribosomal protein L9 and residues 8-691 of EF-G in Escherichia coli strain BL21(DE3) Star Thermus thermophilus

Crystallization (Commentary)

Crystallization (Comment) Organism
purified ribosomal protein L9-elongation factor G fusion protein in complex with GDP, the EF-G-GTP complex is bound on a pre-translocation ribosome (PRE ribosome) that is deficient in tRNA translocation upon EF-G binding, sitting drop vapour diffusion method, mixing of 0.1 mM protein in 10 mM Tris-HCl, pH 7.5, 200 mM KCl, 10 mM Mg(CH3COO)2, and 1 mM 2-mercaptoethanol, with X-ray diffraction structure determination and analysis at 2.0 A resolution. Only in the presence of the GDP nucleotide, and not GTP, does EF-G crystalize with the non-rotated ribosome under the experimental conditions Thermus thermophilus

Localization

Localization Comment Organism GeneOntology No. Textmining
ribosome
-
Thermus thermophilus 5840
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Thermus thermophilus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
GTP + H2O Thermus thermophilus
-
GDP + phosphate
-
?

Organism

Organism UniProt Comment Textmining
Thermus thermophilus P13551
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant enzyme from Escherichia coli strain BL21(DE3) Star by hydrophobic interaction, anion exchange chromatography, gel filtration Thermus thermophilus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
GTP + H2O
-
Thermus thermophilus GDP + phosphate
-
?

Synonyms

Synonyms Comment Organism
EF-G
-
Thermus thermophilus
elongation factor G
-
Thermus thermophilus
fusA
-
Thermus thermophilus
GTPase
-
Thermus thermophilus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
assay at Thermus thermophilus

General Information

General Information Comment Organism
additional information EF-G binds with GTP or GDP on the PRE ribosome. But only in the presence of the GDP nucleotide, and not GTP, does EF-G crystalize with the non-rotated ribosome under the experimental conditions Thermus thermophilus
physiological function EF-G-mediated tRNA translocation, mechanism, overview Thermus thermophilus