1LJ2

Recognition of eIF4G by Rotavirus NSP3 reveals a basis for mRNA circularization


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Recognition of eIF4G by rotavirus NSP3 reveals a basis for mRNA circularization.

Groft, C.M.Burley, S.K.

(2002) Mol.Cell 9: 1273-1283


  • PubMed Abstract: 
  • Rotaviruses, segmented double-stranded RNA viruses, co-opt the eukaryotic translation machinery with the aid of nonstructural protein 3 (NSP3), a rotaviral functional homolog of the cellular poly(A) binding protein (PABP). NSP3 binds to viral mRNA 3' ...

    Rotaviruses, segmented double-stranded RNA viruses, co-opt the eukaryotic translation machinery with the aid of nonstructural protein 3 (NSP3), a rotaviral functional homolog of the cellular poly(A) binding protein (PABP). NSP3 binds to viral mRNA 3' consensus sequences and circularizes mRNA via interactions with eIF4G. Here, we present the X-ray structure of the C-terminal domain of NSP3 (NSP3-C) recognizing a fragment of eIF4GI. Homodimerization of NSP3-C yields a symmetric, elongated, largely alpha-helical structure with two hydrophobic eIF4G binding pockets at the dimer interface. Site-directed mutagenesis and isothermal titration calorimetry documented that NSP3 and PABP use analogous eIF4G recognition strategies, despite marked differences in tertiary structure.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NONSTRUCTURAL RNA-BINDING PROTEIN 34
A, B
110Rotavirus A (strain SA11-Both G3-P5B[2]-I2-R2-C5-M5-A5-N2-T5-E2-H5)N/A
Find proteins for P03536 (Rotavirus A (strain SA11-Both G3-P5B[2]-I2-R2-C5-M5-A5-N2-T5-E2-H5))
Go to UniProtKB:  P03536
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
eukaryotic protein synthesis initiation factor
C, D
28Homo sapiensGene Names: EIF4G1 (EIF4F, EIF4G, EIF4GI)
Find proteins for Q04637 (Homo sapiens)
Go to Gene View: EIF4G1
Go to UniProtKB:  Q04637
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AU
Query on AU

Download SDF File 
Download CCD File 
B, D
GOLD ION
Au
ZBKIUFWVEIBQRT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.221 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.690α = 90.00
b = 74.040β = 90.00
c = 77.460γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
CNSrefinement
TRUNCATEdata reduction
DENZOdata reduction
MLPHAREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-07-05
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance