4PC6

Elongation factor Tu:Ts complex with bound GDPNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

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This is version 1.2 of the entry. See complete history


Literature

Structural outline of the detailed mechanism for elongation factor Ts-mediated guanine nucleotide exchange on elongation factor Tu.

Thirup, S.S.Van, L.B.Nielsen, T.K.Knudsen, C.R.

(2015) J Struct Biol 191: 10-21

  • DOI: 10.1016/j.jsb.2015.06.011
  • Primary Citation of Related Structures:  
    4PC1, 4PC2, 4PC3, 4PC6, 4PC7

  • PubMed Abstract: 
  • Translation elongation factor EF-Tu belongs to the superfamily of guanine-nucleotide binding proteins, which play key cellular roles as regulatory switches. All G-proteins require activation via exchange of GDP for GTP to carry out their respective tasks ...

    Translation elongation factor EF-Tu belongs to the superfamily of guanine-nucleotide binding proteins, which play key cellular roles as regulatory switches. All G-proteins require activation via exchange of GDP for GTP to carry out their respective tasks. Often, guanine-nucleotide exchange factors are essential to this process. During translation, EF-Tu:GTP transports aminoacylated tRNA to the ribosome. GTP is hydrolyzed during this process, and subsequent reactivation of EF-Tu is catalyzed by EF-Ts. The reaction path of guanine-nucleotide exchange is structurally poorly defined for EF-Tu and EF-Ts. We have determined the crystal structures of the following reaction intermediates: two structures of EF-Tu:GDP:EF-Ts (2.2 and 1.8Å resolution), EF-Tu:PO4:EF-Ts (1.9Å resolution), EF-Tu:GDPNP:EF-Ts (2.2Å resolution) and EF-Tu:GDPNP:pulvomycin:Mg(2+):EF-Ts (3.5Å resolution). These structures provide snapshots throughout the entire exchange reaction and suggest a mechanism for the release of EF-Tu in its GTP conformation. An inferred sequence of events during the exchange reaction is presented.


    Organizational Affiliation

    Aarhus University, Department of Molecular Biology and Genetics, Center for Structural Biology, DK-8000 Aarhus C, Denmark.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Elongation factor TuA, C [auth B]394Escherichia coli str. K-12 substr. DH10BMutation(s): 0 
Gene Names: tufAtufECDH10B_3514
UniProt
Find proteins for A0A0M3KKV1 (Escherichia coli (strain K12 / DH10B))
Explore A0A0M3KKV1 
Go to UniProtKB:  A0A0M3KKV1
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Elongation factor TsB [auth C], D282Escherichia coli DH1Mutation(s): 0 
Gene Names: tsfEcDH1_3433ECDH1ME8569_0163
UniProt
Find proteins for A0A0M3KKV2 (Escherichia coli (strain ATCC 33849 / DSM 4235 / NCIMB 12045 / K12 / DH1))
Explore A0A0M3KKV2 
Go to UniProtKB:  A0A0M3KKV2
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.969α = 90
b = 107.467β = 90
c = 193.339γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

  • Deposited Date: 2014-04-14 
  • Released Date: 2015-05-06 
  • Deposition Author(s): Thirup, S.S.

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-07-01
    Changes: Database references
  • Version 1.2: 2015-07-15
    Changes: Database references