5LYH

Human PARP14 (ARTD8), catalytic fragment in complex with inhibitor H10


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Small Molecule Microarray Based Discovery of PARP14 Inhibitors.

Peng, B.Thorsell, A.G.Karlberg, T.Schuler, H.Yao, S.Q.

(2017) Angew. Chem. Int. Ed. Engl. 56: 248-253

  • DOI: 10.1002/anie.201609655
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Poly(ADP-ribose) polymerases (PARPs) are key enzymes in a variety of cellular processes. Most small-molecule PARP inhibitors developed to date have been against PARP1, and suffer from poor selectivity. PARP14 has recently emerged as a potential thera ...

    Poly(ADP-ribose) polymerases (PARPs) are key enzymes in a variety of cellular processes. Most small-molecule PARP inhibitors developed to date have been against PARP1, and suffer from poor selectivity. PARP14 has recently emerged as a potential therapeutic target, but its inhibitor development has trailed behind. Herein, we describe a small molecule microarray-based strategy for high-throughput synthesis, screening of >1000 potential bidentate inhibitors of PARPs, and the successful discovery of a potent PARP14 inhibitor H10 with >20-fold selectivity over PARP1. Co-crystallization of the PARP14/H10 complex indicated H10 bound to both the nicotinamide and the adenine subsites. Further structure-activity relationship studies identified important binding elements in the adenine subsite. In tumor cells, H10 was able to chemically knockdown endogenous PARP14 activities.


    Organizational Affiliation

    Department of Chemistry, National University of Singapore, 3 Science Drive, Singapore, 117543, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Poly [ADP-ribose] polymerase 14
A, B
193Homo sapiensMutation(s): 0 
Gene Names: PARP14 (BAL2, KIAA1268)
EC: 2.4.2.-
Find proteins for Q460N5 (Homo sapiens)
Go to Gene View: PARP14
Go to UniProtKB:  Q460N5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7B8
Query on 7B8

Download SDF File 
Download CCD File 
A, B
3-[2-[4-[2-[[4-[(3-aminocarbonylphenyl)amino]-4-oxidanylidene-butanoyl]amino]ethyl]-1,2,3-triazol-1-yl]ethylsulfamoyl]benzoic acid
C24 H27 N7 O7 S
MUOMSHSMJCWQFH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
7B8IC50: 490 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 83.032α = 90.00
b = 83.032β = 90.00
c = 122.080γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-12-21
    Type: Initial release
  • Version 1.1: 2017-01-11
    Type: Database references
  • Version 1.2: 2018-01-24
    Type: Data collection, Source and taxonomy