4P5E

CRYSTAL STRUCTURE OF HUMAN DNPH1 (RCL) WITH 6-NAPHTHYL-PURINE-RIBOSIDE-MONOPHOSPHATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.156 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

6-(Hetero)Arylpurine nucleotides as inhibitors of the oncogenic target DNPH1: Synthesis, structural studies and cytotoxic activities.

Amiable, C.Paoletti, J.Haouz, A.Padilla, A.Labesse, G.Kaminski, P.A.Pochet, S.

(2014) Eur J Med Chem 85C: 418-437

  • DOI: https://doi.org/10.1016/j.ejmech.2014.07.110
  • Primary Citation of Related Structures:  
    4P5D, 4P5E

  • PubMed Abstract: 

    The 2'-deoxynucleoside 5'-phosphate N-hydrolase 1 (DNPH1) has been proposed as a new molecular target for cancer treatment. Here, we describe the synthesis of a series of novel 6-aryl- and 6-heteroarylpurine riboside 5'-monophosphates via Suzuki-Miyaura cross-coupling reactions, and their ability to inhibit recombinant rat and human DNPH1. Enzymatic inhibition studies revealed competitive inhibitors in the low micromolar range. Crystal structures of human and rat DNPH1 in complex with one nucleotide from this series, the 6-naphthylpurine derivative, provided detailed structural information, in particular regarding the possible conformations of a long and flexible loop wrapping around the large hydrophobic substituent. Taking advantage of these high-resolution structures, we performed virtual docking studies in order to evaluate enzyme-inhibitor interactions for the whole compound series. Among the synthesized compounds, several molecules exhibited significant in vitro cytotoxicity against human colon cancer (HCT15, HCT116) and human promyelocytic leukemia (HL60) cell lines with IC50 values in the low micromolar range, which correlated with in vitro DNPH1 inhibitory potency.


  • Organizational Affiliation

    Institut Pasteur, Unité de Chimie et Biocatalyse, 28 rue du Dr Roux, 75724 Paris Cedex 15, France; CNRS, UMR3523, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
2'-deoxynucleoside 5'-phosphate N-hydrolase 1
A, B
152Homo sapiensMutation(s): 0 
Gene Names: DNPH1C6orf108RCL
EC: 3.2.2
UniProt & NIH Common Fund Data Resources
Find proteins for O43598 (Homo sapiens)
Explore O43598 
Go to UniProtKB:  O43598
PHAROS:  O43598
GTEx:  ENSG00000112667 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43598
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
N6P Binding MOAD:  4P5E Ki: 2800 (nM) from 1 assay(s)
BindingDB:  4P5E Ki: min: 1500, max: 2800 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.156 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.974α = 90
b = 52.284β = 104.77
c = 54.454γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French Infrastructure for Integrated Structural BiologyFranceANR-10-INSB-05-01

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-20
    Type: Initial release
  • Version 1.1: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Refinement description