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 

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This is version 1.3 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

  • DOI: 10.1016/s1097-2765(02)00555-5
  • Primary Citation of Related Structures:  
    1LJ2

  • 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' consensus sequences and circularizes mRNA via interactions with eIF4G ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NONSTRUCTURAL RNA-BINDING PROTEIN 34A, B110Simian rotavirus A/SA11Mutation(s): 0 
UniProt
Find proteins for P03536 (Rotavirus A (strain RVA/SA11-Both/G3P5B[2]))
Explore P03536 
Go to UniProtKB:  P03536
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03536
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
eukaryotic protein synthesis initiation factorC, D28N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q04637 (Homo sapiens)
Explore Q04637 
Go to UniProtKB:  Q04637
PHAROS:  Q04637
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04637
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AU
Query on AU
Download Ideal Coordinates CCD File 
E [auth B],
F [auth B],
G [auth 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 = 59.69α = 90
b = 74.04β = 90
c = 77.46γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
TRUNCATEdata reduction
MLPHAREphasing
CNSrefinement
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-05
    Type: Initial release
  • Version 1.1: 2008-04-28
    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