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Entry Detail
PDB ID:
3UEK
Keywords:
HYDROLASE
Title:
Crystal structure of the catalytic domain of rat poly (ADP-ribose) glycohydrolase
Biological Source:
Source Organism:
Rattus norvegicus
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2011-10-30
Release Date:
2012-05-23
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.95 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
C 2 2 21
3UEK validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Poly(ADP-ribose) glycohydrolase
Chain IDs:A
Chain Length:588
Number of Molecules:1
Biological Source:Rattus norvegicus
UniProt ID:Q9QYM2 Pfam ID:PF20811, PF05028 EC:3.2.1.143
Primary Citation
Structure of mammalian poly(ADP-ribose) glycohydrolase reveals a flexible tyrosine clasp as a substrate-binding element.
Nat.Struct.Mol.Biol. 19 653 656 (2012)
PMID: 22609859 DOI: 10.1038/nsmb.2305

Abstact

Reversible post-translational modification by poly(ADP-ribose) (PAR) regulates chromatin structure, DNA repair and cell fate in response to genotoxic stress. PAR glycohydrolase (PARG) removes PAR chains from poly ADP-ribosylated proteins to restore protein function and release oligo(ADP-ribose) chains to signal damage. Here we report crystal structures of mammalian PARG and its complex with a substrate mimic that reveal an open substrate-binding site and a unique 'tyrosine clasp' enabling endoglycosidic cleavage of branched PAR chains.

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Primary Citation of related structures
3UEL