4C11

Dengue virus RNA dependent RNA polymerase with residues from the NS5 linker region


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

A Crystal Structure of the Dengue Virus Ns5 Polymerase Delineates Inter-Domain Amino Acids Residues that Enhance its Thermostability and De Novo Initiation Activities.

Lim, S.P.Koh, J.H.K.Seh, C.C.Liew, C.W.Davidson, A.D.Chua, L.S.Chandrasekaran, R.Cornvik, T.C.Shi, P.Lescar, J.

(2013) J Biol Chem 288: 31105

  • DOI: 10.1074/jbc.M113.508606
  • Primary Citation of Related Structures:  
    4C11

  • PubMed Abstract: 
  • The dengue virus (DENV) non-structural protein 5 (NS5) comprises an N-terminal methyltransferase and a C-terminal RNA-dependent RNA polymerase (RdRp) domain. Both enzymatic activities form attractive targets for antiviral development. Available crystal structures of NS5 fragments indicate that residues 263-271 (using the DENV serotype 3 numbering) located between the two globular domains of NS5 could be flexible ...

    The dengue virus (DENV) non-structural protein 5 (NS5) comprises an N-terminal methyltransferase and a C-terminal RNA-dependent RNA polymerase (RdRp) domain. Both enzymatic activities form attractive targets for antiviral development. Available crystal structures of NS5 fragments indicate that residues 263-271 (using the DENV serotype 3 numbering) located between the two globular domains of NS5 could be flexible. We observed that the addition of linker residues to the N-terminal end of the DENV RdRp core domain stabilizes DENV1-4 proteins and improves their de novo polymerase initiation activities by enhancing the turnover of the RNA and NTP substrates. Mutation studies of linker residues also indicate their importance for viral replication. We report the structure at 2.6-Å resolution of an RdRp fragment from DENV3 spanning residues 265-900 that has enhanced catalytic properties compared with the RdRp fragment (residues 272-900) reported previously. This new orthorhombic crystal form (space group P21212) comprises two polymerases molecules arranged as a dimer around a non-crystallographic dyad. The enzyme adopts a closed "preinitiation" conformation similar to the one that was captured previously in space group C2221 with one molecule per asymmetric unit. The structure reveals that residues 269-271 interact with the RdRp domain and suggests that residues 263-268 of the NS5 protein from DENV3 are the major contributors to the flexibility between its methyltransferase and RdRp domains. Together, these results should inform the screening and development of antiviral inhibitors directed against the DENV RdRp.


    Organizational Affiliation

    From the Novartis Institute for Tropical Diseases, Singapore 138670, Singapore.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DENGUE VIRUS TYPE 3 RNA DEPENDENT RNA POLYMERASEA638Dengue virusMutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.1.1.56 (UniProt), 2.1.1.57 (UniProt), 2.7.7.48 (UniProt)
Find proteins for Q6YMS4 (Dengue virus type 3 (strain Sri Lanka/1266/2000))
Explore Q6YMS4 
Go to UniProtKB:  Q6YMS4
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DENGUE VIRUS TYPE 3 RNA DEPENDENT RNA POLYMERASEB638Dengue virusMutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.1.1.56 (UniProt), 2.1.1.57 (UniProt), 2.7.7.48 (UniProt)
Find proteins for Q6YMS4 (Dengue virus type 3 (strain Sri Lanka/1266/2000))
Explore Q6YMS4 
Go to UniProtKB:  Q6YMS4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.99α = 90
b = 136.05β = 90
c = 103.24γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
d*TREKdata reduction
d*TREKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-08-09 
  • Released Date: 2013-08-21 
  • Deposition Author(s): Lim, S.P., Lescar, J.

Revision History  (Full details and data files)

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-09-11
    Changes: Atomic model, Database references, Structure summary
  • Version 1.2: 2013-09-25
    Changes: Database references
  • Version 1.3: 2013-11-13
    Changes: Database references
  • Version 1.4: 2018-04-04
    Changes: Data collection