3MHK

Human tankyrase 2 - catalytic PARP domain in complex with 2-(2-pyridyl)-7,8-dihydro-5h-thiino[4,3-d]pyrimidin-4-ol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Family-wide chemical profiling and structural analysis of PARP and tankyrase inhibitors

Wahlberg, E.Karlberg, T.Kouznetsova, E.Markova, N.Macchiarulo, A.Thorsell, A.G.Pol, E.Frostell, A.Ekblad, T.Kull, B.Robertson, G.M.Pellicciari, R.Schuler, H.Weigelt, J.

(2012) Nat Biotechnol 30: 283-288

  • DOI: https://doi.org/10.1038/nbt.2121
  • Primary Citation of Related Structures:  
    3GOY, 3MHJ, 3MHK, 3P0N, 3P0P, 3P0Q, 3SE2, 3SMI, 3SMJ

  • PubMed Abstract: 

    Inhibitors of poly-ADP-ribose polymerase (PARP) family proteins are currently in clinical trials as cancer therapeutics, yet the specificity of many of these compounds is unknown. Here we evaluated a series of 185 small-molecule inhibitors, including research reagents and compounds being tested clinically, for the ability to bind to the catalytic domains of 13 of the 17 human PARP family members including the tankyrases, TNKS1 and TNKS2. Many of the best-known inhibitors, including TIQ-A, 6(5H)-phenanthridinone, olaparib, ABT-888 and rucaparib, bound to several PARP family members, suggesting that these molecules lack specificity and have promiscuous inhibitory activity. We also determined X-ray crystal structures for five TNKS2 ligand complexes and four PARP14 ligand complexes. In addition to showing that the majority of PARP inhibitors bind multiple targets, these results provide insight into the design of new inhibitors.


  • Organizational Affiliation

    Structural Genomics Consortium, Karolinska Institutet, Department of Medical Biochemistry and Biophysics, Stockholm, Sweden.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tankyrase-2223Homo sapiensMutation(s): 0 
Gene Names: PARP5BTANK2TNKLTNKS2
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
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.484α = 90
b = 92.484β = 90
c = 53.506γ = 120
Software Package:
Software NamePurpose
MxCuBEdata collection
MOLREPphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2012-03-07
    Changes: Database references
  • Version 1.3: 2013-06-19
    Changes: Database references
  • Version 1.4: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description