1QVA

YEAST INITIATION FACTOR 4A N-TERMINAL DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallographic structure of the amino terminal domain of yeast initiation factor 4A, a representative DEAD-box RNA helicase

Johnson, E.R.McKay, D.B.

(1999) RNA 5: 1526-1534


  • PubMed Abstract: 
  • The eukaryotic translation initiation factor 4A (elF4A) is a representative of the DEAD-box RNA helicase protein family. We have solved the crystallographic structure of the amino-terminal domain (residues 1-223) of yeast elF4A. The domain is built a ...

    The eukaryotic translation initiation factor 4A (elF4A) is a representative of the DEAD-box RNA helicase protein family. We have solved the crystallographic structure of the amino-terminal domain (residues 1-223) of yeast elF4A. The domain is built around a core scaffold, a parallel alpha-beta motif with five beta strands, that is found in other RNA and DNA helicases, as well as in the RecA protein. The amino acid sequence motifs that are conserved within the helicase family are localized to the beta strand-->alpha helix junctions within the core. The core of the amino terminal domain of elF4A is amplified with additional structural elements that differ from those of other helicases. The phosphate binding loop (the Walker A motif) is in an unusual closed conformation. The crystallographic structure reveals specific interactions between amino acid residues of the phosphate binding loop, the DEAD motif, and the SAT motif, whose alteration is known to impair coupling between the ATPase cycle and the RNA unwinding activity of elF4A.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, California 94305-5400, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INITIATION FACTOR 4A
A
223Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: TIF1, TIF2 (TIF41A, TIF41B)
EC: 3.6.4.13
Find proteins for P10081 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P10081
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 38.800α = 90.00
b = 74.300β = 90.00
c = 81.000γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSphasing
QUANTUMdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance