1WOK

Crystal structure of catalytic domain of human poly(ADP-ribose) polymerase complexed with a quinoxaline-type inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Discovery of quinazolinone and quinoxaline derivatives as potent and selective poly(ADP-ribose) polymerase-1/2 inhibitors.

Iwashita, A.Hattori, K.Yamamoto, H.Ishida, J.Kido, Y.Kamijo, K.Murano, K.Miyake, H.Kinoshita, T.Warizaya, M.Ohkubo, M.Matsuoka, N.Mutoh, S.

(2005) Febs Lett. 579: 1389-1393

  • DOI: 10.1016/j.febslet.2005.01.036

  • PubMed Abstract: 
  • Two classes of quinazolinone derivatives and quinoxaline derivatives were identified as potent and selective poly(ADP-ribose) polymerase-1 and 2 (PARP-1) and (PARP-2) inhibitors, respectively. In PARP enzyme assays using recombinant PARP-1 and PARP-2 ...

    Two classes of quinazolinone derivatives and quinoxaline derivatives were identified as potent and selective poly(ADP-ribose) polymerase-1 and 2 (PARP-1) and (PARP-2) inhibitors, respectively. In PARP enzyme assays using recombinant PARP-1 and PARP-2, quinazolinone derivatives displayed relatively high selectivity for PARP-1 and quinoxaline derivatives showed superior selectivity for PARP-2. SBDD analysis via a combination of X-ray structural study and homology modeling suggested distinct interactions of inhibitors with PARP-1 and PARP-2. These findings provide a new structural framework for the design of selective inhibitors for PARP-1 and PARP-2.


    Organizational Affiliation

    Medicinal Biology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd., 2-1-6 Kashima, Osaka 532-8514, Japan. aki_iwashita@po.fujisawa.co.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Poly [ADP-ribose] polymerase-1
A, B, C, D
350Homo sapiensMutation(s): 0 
Gene Names: PARP1 (ADPRT, PPOL)
EC: 2.4.2.30
Find proteins for P09874 (Homo sapiens)
Go to Gene View: PARP1
Go to UniProtKB:  P09874
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CNQ
Query on CNQ

Download SDF File 
Download CCD File 
A, B, C, D
3-(4-CHLOROPHENYL)QUINOXALINE-5-CARBOXAMIDE
2-(4-CHLOROPHENYL)-5-QUINOXALINECARBOXAMIDE
C15 H10 Cl N3 O
FLYGLPYJEQPCFY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CNQIC50: 33 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.233 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 90.050α = 90.00
b = 77.080β = 117.43
c = 113.720γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
AMoREphasing
CNXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description