Structure of the methyltransferase domain from Modoc Virus, a Flavivirus with No Known Vector (NKV)

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 

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Structure of the Methyltransferase Domain from the Modoc Virus, a Flavivirus with No Known Vector.

Jansson, A.M.Jakobsson, E.Johansson, P.Lantez, V.Coutard, B.De Lamballerie, X.Unge, T.Jones, T.A.

(2009) Acta Crystallogr D Biol Crystallogr 65: 796

  • DOI: https://doi.org/10.1107/S0907444909017260
  • Primary Citation of Related Structures:  
    2WA1, 2WA2

  • PubMed Abstract: 

    The Modoc virus (MODV) is a flavivirus with no known vector (NKV). Evolutionary studies have shown that the viruses in the MODV group have evolved in association with mammals (bats, rodents) without transmission by an arthropod vector. MODV methyltransferase is the first enzyme from this evolutionary branch to be structurally characterized. The high-resolution structure of the methyltransferase domain of the MODV NS5 protein (MTase(MODV)) was determined. The protein structure was solved in the apo form and in complex with its cofactor S-adenosyl-L-methionine (SAM). Although it belongs to a separate evolutionary branch, MTase(MODV) shares structural characteristics with flaviviral MTases from the other branches. Its capping machinery is a relatively new target in flaviviral drug development and the observed structural conservation between the three flaviviral branches indicates that it may be possible to identify a drug that targets a range of flaviviruses. The structural conservation also supports the choice of MODV as a possible model for flavivirus studies.

  • Organizational Affiliation

    Department of Cell and Molecular Biology, Uppsala University, Biomedical Center, SE 751 24 Uppsala, Sweden.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
276Modoc virusMutation(s): 4 
Find proteins for Q8QL64 (Modoc virus)
Explore Q8QL64 
Go to UniProtKB:  Q8QL64
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8QL64
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.738α = 90
b = 180.738β = 90
c = 52.444γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-08-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance