Human ARTD1 (PARP1) - Catalytic domain in complex with inhibitor ME0328

Experimental Data Snapshot

  • Resolution: 2.89 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.215 

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PARP Inhibitor with Selectivity Toward ADP-Ribosyltransferase ARTD3/PARP3

Lindgren, A.E.G.Karlberg, T.Thorsell, A.G.Hesse, M.Spjut, S.Ekblad, T.Andersson, C.D.Pinto, A.F.Weigelt, J.Hottiger, M.O.Linusson, A.Elofsson, M.Schuler, H.

(2013) ACS Chem Biol 8: 1698-1703

  • DOI: https://doi.org/10.1021/cb4002014
  • Primary Citation of Related Structures:  
    4GV0, 4GV2, 4GV4, 4GV7

  • PubMed Abstract: 

    Inhibiting ADP-ribosyl transferases with PARP-inhibitors is considered a promising strategy for the treatment of many cancers and ischemia, but most of the cellular targets are poorly characterized. Here, we describe an inhibitor of ADP-ribosyltransferase-3/poly(ADP-ribose) polymerase-3 (ARTD3), a regulator of DNA repair and mitotic progression. In vitro profiling against 12 members of the enzyme family suggests selectivity for ARTD3, and crystal structures illustrate the molecular basis for inhibitor selectivity. The compound is active in cells, where it elicits ARTD3-specific effects at submicromolar concentration. Our results show that by targeting the nicotinamide binding site, selective inhibition can be achieved among the closest relatives of the validated clinical target, ADP-ribosyltransferase-1/poly(ADP-ribose) polymerase-1.

  • Organizational Affiliation

    Department of Chemistry, Umeå University, Umeå, Sweden.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1
A, B, C, D
358Homo sapiensMutation(s): 0 
Gene Names: PARP1
UniProt & NIH Common Fund Data Resources
Find proteins for P09874 (Homo sapiens)
Explore P09874 
Go to UniProtKB:  P09874
PHAROS:  P09874
GTEx:  ENSG00000143799 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09874
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.89 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.215 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.05α = 90
b = 49.43β = 101.82
c = 183.51γ = 90
Software Package:
Software NamePurpose
MxCuBEdata collection
autoPROCdata scaling
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-19
    Type: Initial release
  • Version 1.1: 2013-10-16
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description