5IQ6

Crystal structure of Dengue virus serotype 3 RNA dependent RNA polymerase bound to HeE1-2Tyr, a new pyridobenzothizole inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Targeting flavivirus RNA dependent RNA polymerase through a pyridobenzothiazole inhibitor.

Tarantino, D.Cannalire, R.Mastrangelo, E.Croci, R.Querat, G.Barreca, M.L.Bolognesi, M.Manfroni, G.Cecchetti, V.Milani, M.

(2016) Antiviral Res 134: 226-235

  • DOI: 10.1016/j.antiviral.2016.09.007
  • Primary Citation of Related Structures:  
    5IQ6

  • PubMed Abstract: 
  • RNA dependent RNA polymerases (RdRp) are essential enzymes for flavivirus replication. Starting from an in silico docking analysis we identified a pyridobenzothiazole compound, HeE1-2Tyr, able to inhibit West Nile and Dengue RdRps activity in vitro, which proved effective against different flaviviruses in cell culture ...

    RNA dependent RNA polymerases (RdRp) are essential enzymes for flavivirus replication. Starting from an in silico docking analysis we identified a pyridobenzothiazole compound, HeE1-2Tyr, able to inhibit West Nile and Dengue RdRps activity in vitro, which proved effective against different flaviviruses in cell culture. Crystallographic data show that HeE1-2Tyr binds between the fingers domain and the priming loop of Dengue virus RdRp (Site 1). Conversely, enzyme kinetics, binding studies and mutational analyses suggest that, during the catalytic cycle and assembly of the RdRp-RNA complex, HeE1-2Tyr might be hosted in a distinct binding site (Site 2). RdRp mutational studies, driven by in silico docking analysis, allowed us to locate the inhibition Site 2 in the thumb domain. Taken together, our results provide innovative concepts for optimization of a new class of anti-flavivirus compounds.


    Organizational Affiliation

    Dipartimento di Bioscienze, Università di Milano, Via Celoria 26, I-20133, Milano, Italy; CNR-IBF, Istituto di Biofisica, Via Celoria 26, I-20133, Milano, Italy. Electronic address: mario.milani@unimi.it.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA dependent RNA polymeraseA628Dengue virus 3Mutation(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)
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
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6CJ
Query on 6CJ

Download Ideal Coordinates CCD File 
D [auth A]N-[8-(cyclohexyloxy)-1-oxo-2-phenyl-1H-pyrido[2,1-b][1,3]benzothiazole-4-carbonyl]-L-tyrosine
C33 H30 N2 O6 S
PTUWWNGMUPSKDC-MHZLTWQESA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A], C [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162α = 90
b = 180.9β = 90
c = 58.1γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European CommissionEcuadorSILVER project 2606444

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-05
    Type: Initial release
  • Version 1.1: 2016-10-12
    Changes: Database references