6FFM

Crystal Structure of Human KEAP1 BTB Domain in Complex with isoxazoline-based inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.253 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Effects of 3-Bromo-4,5-dihydroisoxazole Derivatives on Nrf2 Activation and Heme Oxygenase-1 Expression.

Pinto, A.El Ali, Z.Moniot, S.Tamborini, L.Steegborn, C.Foresti, R.De Micheli, C.

(2018) ChemistryOpen 7: 858-864

  • DOI: 10.1002/open.201800185

  • PubMed Abstract: 
  • Natural and synthetic electrophilic compounds have been shown to activate the antioxidant protective Nrf2 (nuclear factor erythroid 2-related factor 2)/heme oxygenase-1 (HO-1) axis in cells and tissues. Here, we tested the ability of different isoxaz ...

    Natural and synthetic electrophilic compounds have been shown to activate the antioxidant protective Nrf2 (nuclear factor erythroid 2-related factor 2)/heme oxygenase-1 (HO-1) axis in cells and tissues. Here, we tested the ability of different isoxazoline-based electrophiles to up-regulate Nrf2/HO-1. The potency of activation is dependent on the leaving group at the 3-position of the isoxazoline nucleus, and an additional ring on the molecule limits the Nrf2/HO-1 activating properties. Among the synthetized compounds, we identified 3-bromo-5-phenyl-4,5-dihydroisoxazole 1 as the derivative with best activating properties in THP-1 human monocytic cells. We have confirmed that the target of our compounds is the Cys151 of the BTB domain of Keap1 by using mass spectrometry analyses and X-ray crystallography. Our findings demonstrate that these compounds affect the Nrf2/HO-1 axis and highlight a positive activity that can be of relevance from a therapeutic perspective in inflammation and infection.


    Organizational Affiliation

    Inserm U955, Equipe 12 Créteil 94000 France.,Department of Food, Environmental and Nutritional Sciences (DeFENS) University of Milan viaCeloria 2 20133 Milan Italy.,Department of Biochemistry University of Bayreuth Universitaetsstr. 30 95447 Bayreuth Germany.,Université Paris Est Faculté de Médecine Créteil 94000 France.,Department of Pharmaceutical Sciences University of Milan viaMangiagalli 25 20133 Milan Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kelch-like ECH-associated protein 1
A
136Homo sapiensMutation(s): 1 
Gene Names: KEAP1 (INRF2, KIAA0132, KLHL19)
Find proteins for Q14145 (Homo sapiens)
Go to Gene View: KEAP1
Go to UniProtKB:  Q14145
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D8N
Query on D8N

Download SDF File 
Download CCD File 
A
~{N}-[4-[(5~{R})-4,5-dihydro-1,2-oxazol-5-yl]phenyl]ethanamide
C11 H12 N2 O2
NXJZQAOQHFVDJW-LLVKDONJSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.253 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 42.491α = 90.00
b = 42.491β = 90.00
c = 265.213γ = 120.00
Software Package:
Software NamePurpose
XDSdata scaling
PHENIXrefinement
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-11-14
    Type: Initial release