The X-ray crystal structure of poly(ADP-ribose) glycohydrolase E115A mutant from Thermomonospora curvata

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

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The structure and catalytic mechanism of a poly(ADP-ribose) glycohydrolase.

Slade, D.Dunstan, M.S.Barkauskaite, E.Weston, R.Lafite, P.Dixon, N.Ahel, M.Leys, D.Ahel, I.

(2011) Nature 477: 616-620

  • DOI: https://doi.org/10.1038/nature10404
  • Primary Citation of Related Structures:  
    3SIG, 3SIH, 3SII, 3SIJ

  • PubMed Abstract: 

    Post-translational modification of proteins by poly(ADP-ribosyl)ation regulates many cellular pathways that are critical for genome stability, including DNA repair, chromatin structure, mitosis and apoptosis. Poly(ADP-ribose) (PAR) is composed of repeating ADP-ribose units linked via a unique glycosidic ribose-ribose bond, and is synthesized from NAD by PAR polymerases. PAR glycohydrolase (PARG) is the only protein capable of specific hydrolysis of the ribose-ribose bonds present in PAR chains; its deficiency leads to cell death. Here we show that filamentous fungi and a number of bacteria possess a divergent form of PARG that has all the main characteristics of the human PARG enzyme. We present the first PARG crystal structure (derived from the bacterium Thermomonospora curvata), which reveals that the PARG catalytic domain is a distant member of the ubiquitous ADP-ribose-binding macrodomain family. High-resolution structures of T. curvata PARG in complexes with ADP-ribose and the PARG inhibitor ADP-HPD, complemented by biochemical studies, allow us to propose a model for PAR binding and catalysis by PARG. The insights into the PARG structure and catalytic mechanism should greatly improve our understanding of how PARG activity controls reversible protein poly(ADP-ribosyl)ation and potentially of how the defects in this regulation are linked to human disease.

  • Organizational Affiliation

    Cancer Research UK, Paterson Institute for Cancer Research, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
poly(ADP-ribose) glycohydrolase277Thermomonospora curvata DSM 43183Mutation(s): 1 
Gene Names: Tcur_1721
Find proteins for D1AC29 (Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / KCTC 9072 / NBRC 15933 / NCIMB 10081 / Henssen B9))
Explore D1AC29 
Go to UniProtKB:  D1AC29
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD1AC29
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.1α = 90
b = 105.43β = 90
c = 44.22γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2011-09-28
    Changes: Database references
  • Version 1.2: 2011-10-12
    Changes: Database references
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Refinement description