2V8O | pdb_00002v8o

Structure of the Murray Valley encephalitis virus RNA helicase to 1. 9A resolution

• PDB DOI: https://doi.org/10.2210/pdb2V8O/pdb

• Classification: HYDROLASE
• Organism(s): Murray Valley encephalitis virus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-08-09 Released: 2007-08-21 
• Deposition Author(s): Mancini, E.J., Assenberg, R., Verma, A., Walter, T.S., Tuma, R., Grimes, J.M., Owens, R.J., Stuart, D.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.223 (Depositor), 0.231 (DCC) 
• R-Value Work: 
  0.180 (Depositor), 0.188 (DCC) 
• R-Value Observed: 
  0.182 (Depositor) 

Starting Model: experimental

Literature

Structure of the Murray Valley Encephalitis Virus RNA Helicase at 1.9 A Resolution.

Mancini, E.J., Assenberg, R., Verma, A., Walter, T.S., Tuma, R., Grimes, J.M., Owens, R.J., Stuart, D.I.

(2007) Protein Sci 16: 2294

• PubMed: 17893366 
• DOI: https://doi.org/10.1110/ps.072843107
• Primary Citation Related Structures: 
  2V8O


• PubMed Abstract: 
  

  Murray Valley encephalitis virus (MVEV), a mosquito-borne flavivirus endemic to Australia, is closely related to Japanese encephalitis virus and West Nile virus. Nonstructural protein 3 (NS3) is a multifunctional enzyme with serine protease and DEXH/D-box helicase domains, whose activity is central to flavivirus replication and is therefore a possible target for anti-flaviviral compounds. Cloning, purification, and crystal structure determination to 1.9 Angstrom resolution of the NS3 helicase of MVEV and characterization of its enzymatic activity is reported. Comparison with the structures of helicases from related viruses supports a possible mechanism of ATP hydrolysis-driven strand separation.

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Organizational Affiliation: 
• Division of Structural Biology and Oxford Protein Production Facility, The Henry Wellcome Building for Genomic Medicine, Oxford University, Oxford, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 generated by PQS (software)

Macromolecule Content 

• Total Structure Weight: 49.86 kDa 
• Atom Count: 3,667 
• Modeled Residue Count: 429 
• Deposited Residue Count: 444 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FLAVIVIRIN PROTEASE NS3	A	444	Murray Valley encephalitis virus	Mutation(s): 0  EC: 3.4.21.91
UniProt
Find proteins for P05769 (Murray valley encephalitis virus (strain MVE-1-51)) Explore P05769  Go to UniProtKB:  P05769

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.223 (Depositor), 0.231 (DCC) 
• R-Value Work:  0.180 (Depositor), 0.188 (DCC) 
• R-Value Observed: 0.182 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.516	α = 90
b = 76.414	β = 91.73
c = 70.609	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
CaspR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-08-21 
Deposition Author(s): Mancini, E.J., Assenberg, R., Verma, A., Walter, T.S., Tuma, R., Grimes, J.M., Owens, R.J., Stuart, D.I.

Revision History  

• Version 1.0: 2007-08-21
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2017-07-12
  Changes: Refinement description
• Version 1.3: 2019-04-03
  Changes: Data collection, Source and taxonomy
• Version 1.4: 2023-12-13
  Changes: Data collection, Database references, Other, Refinement description