eIF2gamma apo

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.212 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


X-ray Structure of Translation Initiation Factor eIF2gamma: IMPLICATIONS FOR tRNA AND eIF2alpha BINDING.

Roll-Mecak, A.Alone, P.Cao, C.Dever, T.E.Burley, S.K.

(2004) J Biol Chem 279: 10634-10642

  • DOI: https://doi.org/10.1074/jbc.M310418200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The x-ray structure of the gamma-subunit of the heterotrimeric translation initiation factor eIF2 has been determined to 2.4-A resolution. eIF2 is a GTPase that delivers the initiator Met-tRNA to the P site on the small ribosomal subunit during a rate-limiting initiation step in translation. The structure of eIF2gamma closely resembles that of EF1A.GTP, consisting of an N-terminal G domain followed by two beta-barrels arranged in a closed configuration with domain II packed against the G domain in the vicinity of the Switch regions. The G domain of eIF2gamma has an unusual zinc ribbon motif, not previously found in other GTPases. Structure-based site-directed mutagenesis was used to identify two adjacent features on the surface of eIF2gamma that bind the alpha-subunit and Met-tRNA(i)(Met), respectively. These structural, biochemical, and genetic results provide new insights into eIF2 ternary complex assembly.

  • Organizational Affiliation

    Laboratories of Molecular Biophysics, The Rockefeller University, New York, New York 10021, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Translation initiation factor 2 gamma subunit408Methanocaldococcus jannaschiiMutation(s): 0 
Gene Names: EIF2GMJ1261
Find proteins for Q58657 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Explore Q58657 
Go to UniProtKB:  Q58657
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ58657
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.212 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.842α = 90
b = 52.49β = 92.53
c = 74.134γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-01-20
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-02-03
    Changes: Database references, Derived calculations, Structure summary