4DQY

Structure of Human PARP-1 bound to a DNA double strand break


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.242 

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Literature

Structural basis for DNA damage-dependent poly(ADP-ribosyl)ation by human PARP-1.

Langelier, M.F.Planck, J.L.Roy, S.Pascal, J.M.

(2012) Science 336: 728-732

  • DOI: 10.1126/science.1216338
  • Primary Citation of Related Structures:  
    4DQY

  • PubMed Abstract: 
  • Poly(ADP-ribose) polymerase-1 (PARP-1) (ADP, adenosine diphosphate) has a modular domain architecture that couples DNA damage detection to poly(ADP-ribosyl)ation activity through a poorly understood mechanism. Here, we report the crystal structure of a DNA double-strand break in complex with human PARP-1 domains essential for activation (Zn1, Zn3, WGR-CAT) ...

    Poly(ADP-ribose) polymerase-1 (PARP-1) (ADP, adenosine diphosphate) has a modular domain architecture that couples DNA damage detection to poly(ADP-ribosyl)ation activity through a poorly understood mechanism. Here, we report the crystal structure of a DNA double-strand break in complex with human PARP-1 domains essential for activation (Zn1, Zn3, WGR-CAT). PARP-1 engages DNA as a monomer, and the interaction with DNA damage organizes PARP-1 domains into a collapsed conformation that can explain the strong preference for automodification. The Zn1, Zn3, and WGR domains collectively bind to DNA, forming a network of interdomain contacts that links the DNA damage interface to the catalytic domain (CAT). The DNA damage-induced conformation of PARP-1 results in structural distortions that destabilize the CAT. Our results suggest that an increase in CAT protein dynamics underlies the DNA-dependent activation mechanism of PARP-1.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, The Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1A, D116Homo sapiensMutation(s): 0 
Gene Names: PARP1ADPRTPPOL
EC: 2.4.2.30 (UniProt), 2.4.2 (UniProt)
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PHAROS:  P09874
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1B, E160Homo sapiensMutation(s): 0 
Gene Names: PARP1ADPRTPPOL
EC: 2.4.2.30 (UniProt), 2.4.2 (UniProt)
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Find proteins for P09874 (Homo sapiens)
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PHAROS:  P09874
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1C, F506Homo sapiensMutation(s): 0 
Gene Names: PARP1ADPRTPPOL
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (UniProt)
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Find proteins for P09874 (Homo sapiens)
Explore P09874 
Go to UniProtKB:  P09874
PHAROS:  P09874
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsLengthOrganismImage
DNA (26-MER)G [auth M], H [auth N]26N/A
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.242 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.095α = 90
b = 112.965β = 90
c = 294.724γ = 90
Software Package:
Software NamePurpose
CBASSdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-30
    Type: Initial release