6JVQ

Crystal structure of human MTH1 in complex with compound MI1025


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Inhibitor development of MTH1 via high-throughput screening with fragment based library and MTH1 substrate binding cavity.

Peng, C.Li, Y.H.Yu, C.W.Cheng, Z.H.Liu, J.R.Hsu, J.L.Hsin, L.W.Huang, C.T.Juan, H.F.Chern, J.W.Cheng, Y.S.

(2021) Bioorg Chem 110: 104813-104813

  • DOI: https://doi.org/10.1016/j.bioorg.2021.104813
  • Primary Citation of Related Structures:  
    6JVF, 6JVG, 6JVH, 6JVI, 6JVJ, 6JVK, 6JVL, 6JVM, 6JVN, 6JVO, 6JVP, 6JVQ, 6JVR, 6JVS, 6JVT

  • PubMed Abstract: 

    MutT Homolog 1 (MTH1) has been proven to hydrolyze oxidized nucleotide triphosphates during DNA repair. It can prevent the incorporation of wrong nucleotides during DNA replication and mitigate cell apoptosis. In a cancer cell, abundant reactive oxygen species can lead to substantial DNA damage and DNA mutations by base-pairing mismatch. MTH1 could eliminate oxidized dNTP and prevent cancer cells from entering cell death. Therefore, inhibition of MTH1 activity is considered to be an anti-cancer therapeutic target. In this study, high-throughput screening techniques were combined with a fragment-based library containing 2,313 compounds, which were used to screen for lead compounds with MTH1 inhibitor activity. Four compounds with MTH1 inhibitor ability were selected, and compound MI0639 was found to have the highest effective inhibition. To discover the selectivity and specificity of this action, several derivatives based on the MTH1 and MI0639 complex structure were synthesized. We compared 14 complex structures of MTH1 and the various compounds in combination with enzymatic inhibition and thermodynamic analysis. Nanomolar-range IC 50 inhibition abilities by enzyme kinetics and K d values by thermodynamic analysis were obtained for two compounds, named MI1020 and MI1024. Based on structural information and compound optimization, we aim to provide a strategy for the development of MTH1 inhibitors with high selectivity and specificity.


  • Organizational Affiliation

    Institute of Plant Biology, National Taiwan University, Taipei 10617, Taiwan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
7,8-dihydro-8-oxoguanine triphosphatase
A, B
156Homo sapiensMutation(s): 0 
Gene Names: NUDT1MTH1
EC: 3.6.1.55 (PDB Primary Data), 3.6.1.56 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P36639 (Homo sapiens)
Explore P36639 
Go to UniProtKB:  P36639
PHAROS:  P36639
GTEx:  ENSG00000106268 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP36639
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CJF
Query on CJF

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
N4-cyclopropyl-6-morpholin-4-yl-pyrimidine-2,4-diamine
C11 H17 N5 O
ODSBHVJNQBVQRW-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.122α = 90
b = 68.78β = 90
c = 78.874γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-28
    Type: Initial release
  • Version 1.1: 2021-05-12
    Changes: Database references
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references, Refinement description