4BU7

Crystal structure of human tankyrase 2 in complex with 2-(4- bromophenyl)-3,4-dihydroquinazolin-4-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Para-Substituted 2-Phenyl-3,4-Dihydroquinazolin-4-Ones as Potent and Selective Tankyrase Inhibitors.

Haikarainen, T.Koivunen, J.Narwal, M.Venkannagari, H.Obaji, E.Joensuu, P.Pihlajaniemi, T.Lehtio, L.

(2013) Chemmedchem 8: 1978

  • DOI: 10.1002/cmdc.201300337
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human tankyrases are attractive drug targets, especially for the treatment of cancer. We identified a set of highly potent tankyrase inhibitors based on a 2-phenyl-3,4-dihydroquinazolin-4-one scaffold. Substitutions at the para position of the scaffo ...

    Human tankyrases are attractive drug targets, especially for the treatment of cancer. We identified a set of highly potent tankyrase inhibitors based on a 2-phenyl-3,4-dihydroquinazolin-4-one scaffold. Substitutions at the para position of the scaffold's phenyl group were evaluated as a strategy to increase potency and improve selectivity. The best compounds displayed single-digit nanomolar potencies, and profiling against several human diphtheria-toxin-like ADP-ribosyltransferases revealed that a subset of these compounds are highly selective tankyrase inhibitors. The compounds also effectively inhibit Wnt signaling in HEK293 cells. The binding mode of all inhibitors was studied by protein X-ray crystallography. This allowed us to establish a structural basis for the development of highly potent and selective tankyrase inhibitors based on the 2-phenyl-3,4-dihydroquinazolin-4-one scaffold and outline a rational approach to the modification of other inhibitor scaffolds that bind to the nicotinamide site of the catalytic domain.


    Organizational Affiliation

    Department of Biochemistry and Biocenter Oulu, 90014 University of Oulu, PO Box 3000 Oulu (Finland).




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TANKYRASE-2
A, C
240Homo sapiensMutation(s): 0 
Gene Names: TNKS2 (PARP5B, TANK2, TNKL)
EC: 2.4.2.30
Find proteins for Q9H2K2 (Homo sapiens)
Go to Gene View: TNKS2
Go to UniProtKB:  Q9H2K2
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
25F
Query on 25F

Download SDF File 
Download CCD File 
A, C
2-(4-bromophenyl)-3,4-dihydroquinazolin-4-one
C14 H9 Br N2 O
NRCCYFAMXZIJSC-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
25FIC50: 11 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.161 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 91.140α = 90.00
b = 97.830β = 90.00
c = 118.760γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-30
    Type: Initial release
  • Version 1.1: 2013-12-11
    Type: Database references
  • Version 1.2: 2019-01-30
    Type: Data collection, Experimental preparation
  • Version 1.3: 2019-02-06
    Type: Data collection, Experimental preparation