1PAX

THE CATALYTIC FRAGMENT OF POLY(ADP-RIBOSE) POLYMERASE COMPLEXED WITH 3,4-DIHYDRO-5-METHYL-ISOQUINOLINONE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structure of the catalytic fragment of poly(ADP-ribose) polymerase from chicken.

Ruf, A.Mennissier de Murcia, J.de Murcia, G.Schulz, G.E.

(1996) Proc Natl Acad Sci U S A 93: 7481-7485

  • DOI: 10.1073/pnas.93.15.7481
  • Primary Citation of Related Structures:  
    1PAX

  • PubMed Abstract: 
  • The crystal structures of the catalytic fragment of chicken poly(ADP-ribose) polymerase [NAD+ ADP-ribosyltransferase; NAD+:poly(adenosine-diphosphate-D-ribosyl)-acceptor ADP-D-ribosyltransferase, EC 2.4.2.30] with and without a nicotinamide-analogue inhibitor have been elucidated ...

    The crystal structures of the catalytic fragment of chicken poly(ADP-ribose) polymerase [NAD+ ADP-ribosyltransferase; NAD+:poly(adenosine-diphosphate-D-ribosyl)-acceptor ADP-D-ribosyltransferase, EC 2.4.2.30] with and without a nicotinamide-analogue inhibitor have been elucidated. Because this enzyme is involved in the regulation of DNA repair, its inhibitors are of interest for cancer therapy. The inhibitor shows the nicotinamide site and also suggests the adenosine site. The enzyme is structurally related to bacterial ADP-ribosylating toxins but contains an additional alpha-helical domain that is suggested to relay the activation signal issued on binding to damaged DNA.


    Related Citations: 
    • Crystallization and X-Ray Crystallographic Analysis of Recombinant Chicken Poly (Adp-Ribose) Polymerase Catalytic Domain Produced in Sf9 Insect Cells
      Jung, S., Miranda, E.A., Menissier De Murcia, J., Niedergang, C., Delarue, M., Schulz, G.E., De Murcia, G.M.
      (1994) J Mol Biol 244: 114

    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Freiburg im Breisgau, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
POLY(ADP-RIBOSE) POLYMERASEA361Gallus gallusMutation(s): 0 
Gene Names: PARP1ADPRT
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (UniProt)
UniProt
Find proteins for P26446 (Gallus gallus)
Explore P26446 
Go to UniProtKB:  P26446
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DHQ (Subject of Investigation/LOI)
Query on DHQ

Download Ideal Coordinates CCD File 
B [auth A]3,4-DIHYDRO-5-METHYL-ISOQUINOLINONE
C10 H11 N O
RLLZPXDJYADIEU-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
DHQ BindingDB:  1PAX Ki: 70 (nM) from 1 assay(s)
IC50: min: 160, max: 420 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.2α = 90
b = 64.5β = 90
c = 96.4γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

  • Deposited Date: 1996-05-06 
  • Released Date: 1997-05-15 
  • Deposition Author(s): Ruf, A., Schulz, G.E.

Revision History  (Full details and data files)

  • Version 1.0: 1997-05-15
    Type: Initial release
  • Version 1.1: 2008-03-04
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance