4UI5

Crystal structure of human tankyrase 2 in complex with TA-41


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.163 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure-Activity Relationships of 2-Arylquinazolin-4-Ones as Highly Selective and Potent Inhibitors of the Tankyrases.

Nathubhai, A.Haikarainen, T.Hayward, P.C.Munoz-Descalzo, S.Thompson, A.S.Lloyd, M.D.Lehtio, L.Threadgill, M.D.

(2016) Eur.J.Med.Chem. 118: 316

  • DOI: 10.1016/j.ejmech.2016.04.041
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Tankyrases (TNKSs), members of the PARP (Poly(ADP-ribose)polymerases) superfamily of enzymes, have gained interest as therapeutic drug targets, especially as they are involved in the regulation of Wnt signalling. A series of 2-arylquinazolin-4-ones w ...

    Tankyrases (TNKSs), members of the PARP (Poly(ADP-ribose)polymerases) superfamily of enzymes, have gained interest as therapeutic drug targets, especially as they are involved in the regulation of Wnt signalling. A series of 2-arylquinazolin-4-ones with varying substituents at the 8-position was synthesised. An 8-methyl group (compared to 8-H, 8-OMe, 8-OH), together with a 4'-hydrophobic or electron-withdrawing group, provided the most potency and selectivity towards TNKSs. Co-crystal structures of selected compounds with TNKS-2 revealed that the protein around the 8-position is more hydrophobic in TNKS-2 compared to PARP-1/2, rationalising the selectivity. The NAD(+)-binding site contains a hydrophobic cavity which accommodates the 2-aryl group; in TNKS-2, this has a tunnel to the exterior but the cavity is closed in PARP-1. 8-Methyl-2-(4-trifluoromethylphenyl)quinazolin-4-one was identified as a potent and selective inhibitor of TNKSs and Wnt signalling. This compound and analogues could serve as molecular probes to study proliferative signalling and for development of inhibitors of TNKSs as drugs.


    Organizational Affiliation

    Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.,Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK.,Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK. Electronic address: a.nathubhai@bath.ac.uk.,Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland.,Department of Genetics, University of Cambridge, Downing Street, Cambridge, CB2 3EH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TANKYRASE-2
A, B
191Homo 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TANKYRASE-2
C, D
48Homo 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, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
BJ4
Query on BJ4

Download SDF File 
Download CCD File 
A, B
8-methoxy-2-(4-methylphenyl)-3,4-dihydroquinazolin-4-one
C16 H14 N2 O2
JKCKQJATUNERKN-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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

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Download CCD File 
A, C
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
BJ4IC50: 167 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.163 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 91.100α = 90.00
b = 98.340β = 90.00
c = 118.730γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-04-13
    Type: Initial release
  • Version 1.1: 2016-05-25
    Type: Database references