Structure of phosphorylated translation elongation factor EF-Tu from E. coli

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.156 

wwPDB Validation   3D Report Full Report

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Phosphorylation decelerates conformational dynamics in bacterial translation elongation factors.

Talavera, A.Hendrix, J.Versees, W.Jurenas, D.Van Nerom, K.Vandenberk, N.Singh, R.K.Konijnenberg, A.De Gieter, S.Castro-Roa, D.Barth, A.De Greve, H.Sobott, F.Hofkens, J.Zenkin, N.Loris, R.Garcia-Pino, A.

(2018) Sci Adv 4: eaap9714-eaap9714

  • DOI: https://doi.org/10.1126/sciadv.aap9714
  • Primary Citation of Related Structures:  
    5MI3, 5MI8, 5MI9

  • PubMed Abstract: 

    Bacterial protein synthesis is intricately connected to metabolic rate. One of the ways in which bacteria respond to environmental stress is through posttranslational modifications of translation factors. Translation elongation factor Tu (EF-Tu) is methylated and phosphorylated in response to nutrient starvation upon entering stationary phase, and its phosphorylation is a crucial step in the pathway toward sporulation. We analyze how phosphorylation leads to inactivation of Escherichia coli EF-Tu. We provide structural and biophysical evidence that phosphorylation of EF-Tu at T382 acts as an efficient switch that turns off protein synthesis by decoupling nucleotide binding from the EF-Tu conformational cycle. Direct modifications of the EF-Tu switch I region or modifications in other regions stabilizing the β-hairpin state of switch I result in an effective allosteric trap that restricts the normal dynamics of EF-Tu and enables the evasion of the control exerted by nucleotides on G proteins. These results highlight stabilization of a phosphorylation-induced conformational trap as an essential mechanism for phosphoregulation of bacterial translation and metabolism. We propose that this mechanism may lead to the multisite phosphorylation state observed during dormancy and stationary phase.

  • Organizational Affiliation

    School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Elongation factor Tu 1
A, B
402Escherichia coli K-12Mutation(s): 0 
Gene Names: tufAb3339JW3301
Find proteins for P0CE47 (Escherichia coli (strain K12))
Explore P0CE47 
Go to UniProtKB:  P0CE47
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0CE47
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.156 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.2α = 90
b = 244.4β = 90
c = 61.74γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
FNRSBelgiumMIS F.4505.16

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2018-04-25
    Changes: Data collection, Database references, Source and taxonomy, Structure summary
  • Version 1.2: 2019-10-16
    Changes: Data collection