4UVX

Crystal structure of human tankyrase 2 in complex with 3-(4- chlorophenyl)-5-fluoro-1,2-dihydroisoquinolin-1-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 
    0.211 (Depositor), 0.210 (DCC) 
  • R-Value Work: 
    0.169 (Depositor), 0.180 (DCC) 
  • R-Value Observed: 
    0.171 (Depositor) 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

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Literature

Exploration of the Nicotinamide-Binding Site of the Tankyrases, Identifying 3-Arylisoquinolin-1-Ones as Potent and Selective Inhibitors in Vitro.

Paine, H.A.Nathubhai, A.Woon, E.C.Y.Sunderland, P.T.Wood, P.J.Mahon, M.F.Lloyd, M.D.Thompson, A.S.Haikarainen, T.Narwal, M.Lehtio, L.Threadgill, M.D.

(2015) Bioorg Med Chem 23: 5891

  • DOI: https://doi.org/10.1016/j.bmc.2015.06.061
  • Primary Citation of Related Structures:  
    4UVL, 4UVN, 4UVO, 4UVP, 4UVS, 4UVT, 4UVU, 4UVV, 4UVW, 4UVX, 4UVY, 4UVZ

  • PubMed Abstract: 

    Tankyrases-1 and -2 (TNKS-1 and TNKS-2) have three cellular roles which make them important targets in cancer. Using NAD(+) as a substrate, they poly(ADP-ribosyl)ate TRF1 (regulating lengths of telomeres), NuMA (facilitating mitosis) and axin (in wnt/β-catenin signalling). Using molecular modelling and the structure of the weak inhibitor 5-aminoiso quinolin-1-one, 3-aryl-5-substituted-isoquinolin-1-ones were designed as inhibitors to explore the structure-activity relationships (SARs) for binding and to define the shape of a hydrophobic cavity in the active site. 5-Amino-3-arylisoquinolinones were synthesised by Suzuki-Miyaura coupling of arylboronic acids to 3-bromo-1-methoxy-5-nitro-isoquinoline, reduction and O-demethylation. 3-Aryl-5-methylisoquinolin-1-ones, 3-aryl-5-fluoroisoquinolin-1-ones and 3-aryl-5-methoxyisoquinolin-1-ones were accessed by deprotonation of 3-substituted-N,N,2-trimethylbenzamides and quench with an appropriate benzonitrile. SAR around the isoquinolinone core showed that aryl was required at the 3-position, optimally with a para-substituent. Small meta-substituents were tolerated but groups in the ortho-positions reduced or abolished activity. This was not due to lack of coplanarity of the rings, as shown by the potency of 4,5-dimethyl-3-phenylisoquinolin-1-one. Methyl and methoxy were optimal at the 5-position. SAR was rationalised by modelling and by crystal structures of examples with TNKS-2. The 3-aryl unit was located in a large hydrophobic cavity and the para-substituents projected into a tunnel leading to the exterior. Potency against TNKS-1 paralleled potency against TNKS-2. Most inhibitors were highly selective for TNKSs over PARP-1 and PARP-2. A range of highly potent and selective inhibitors is now available for cellular studies.


  • Organizational Affiliation

    Medicinal Chemistry, Department of Pharmacy & Pharmacology, University of Bath, Claverton Down, Bath BA2 7AY, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TANKYRASE-2
A, B
240Homo sapiensMutation(s): 0 
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H2K2 (Homo sapiens)
Explore Q9H2K2 
Go to UniProtKB:  Q9H2K2
PHAROS:  Q9H2K2
GTEx:  ENSG00000107854 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H2K2
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
H2W
Query on H2W

Download Ideal Coordinates CCD File 
G [auth A],
L [auth B]
3-(4-chlorophenyl)-5-fluoroisoquinolin-1(2H)-one
C15 H9 Cl F N O
YSBUWGJBGQCVAY-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
I [auth B],
J [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A],
H [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN
Query on ZN

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free:  0.211 (Depositor), 0.210 (DCC) 
  • R-Value Work:  0.169 (Depositor), 0.180 (DCC) 
  • R-Value Observed: 0.171 (Depositor) 
Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.58α = 90
b = 98.51β = 90
c = 118.5γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted H2WClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-09-16
    Changes: Database references
  • Version 1.2: 2019-01-30
    Changes: Data collection, Experimental preparation
  • Version 1.3: 2019-02-06
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other