4NRU

Murine Norovirus RNA-dependent-RNA-polymerase in complex with Compound 6, a suramin derivative


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural bases of norovirus RNA dependent RNA polymerase inhibition by novel suramin-related compounds.

Croci, R.Pezzullo, M.Tarantino, D.Milani, M.Tsay, S.C.Sureshbabu, R.Tsai, Y.J.Mastrangelo, E.Rohayem, J.Bolognesi, M.Hwu, J.R.

(2014) Plos One 9: e91765-e91765

  • DOI: 10.1371/journal.pone.0091765
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Noroviruses (NV) are +ssRNA viruses responsible for severe gastroenteritis; no effective vaccines/antivirals are currently available. We previously identified Suramin (9) as a potent inhibitor of NV-RNA dependent RNA polymerase (NV-RdRp). Despite sig ...

    Noroviruses (NV) are +ssRNA viruses responsible for severe gastroenteritis; no effective vaccines/antivirals are currently available. We previously identified Suramin (9) as a potent inhibitor of NV-RNA dependent RNA polymerase (NV-RdRp). Despite significant in vitro activities versus several pharmacological targets, Suramin clinical use is hampered by pharmacokinetics/toxicity problems. To improve Suramin access to NV-RdRp in vivo, a Suramin-derivative, 8, devoid of two sulphonate groups, was synthesized, achieving significant anti-human-NV-RdRp activity (IC50 = 28 nM); the compound inhibits also murine NV (mNV) RdRp. The synthesis process led to the isolation/characterization of lower molecular weight intermediates (3-7) hosting only one sulphonate head. The crystal structures of both hNV/mNV-RdRps in complex with 6, were analyzed, providing new knowledge on the interactions that a small fragment can establish with NV-RdRps, and establishing a platform for structure-guided optimization of potency, selectivity and drugability.


    Organizational Affiliation

    Department of BioSciences, University of Milano, Milano, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA dependent RNA polymerase
A, B, C, D, E, F
515Murine norovirus 1Mutation(s): 0 
Find proteins for Q80J95 (Murine norovirus 1)
Go to UniProtKB:  Q80J95
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
2NG
Query on 2NG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
4-({4-methyl-3-[(3-nitrobenzoyl)amino]benzoyl}amino)naphthalene-1,5-disulfonic acid
C25 H19 N3 O10 S2
HRJXRQKWGJTVEE-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
2NGIC50: 115 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.191 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 109.220α = 90.00
b = 162.420β = 97.04
c = 122.960γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
EDNAdata collection
MOLREPphasing
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-15
    Type: Initial release