4IN4

Crystal structure of cpd 15 bound to Keap1 Kelch domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Small molecules inhibit the interaction of Nrf2 and the Keap1 Kelch domain through a non-covalent mechanism.

Marcotte, D.Zeng, W.Hus, J.C.McKenzie, A.Hession, C.Jin, P.Bergeron, C.Lugovskoy, A.Enyedy, I.Cuervo, H.Wang, D.Atmanene, C.Roecklin, D.Vecchi, M.Vivat, V.Kraemer, J.Winkler, D.Hong, V.Chao, J.Lukashev, M.Silvian, L.

(2013) Bioorg Med Chem 21: 4011-4019

  • DOI: 10.1016/j.bmc.2013.04.019
  • Primary Citation of Related Structures:  
    4IN4, 4IQK

  • PubMed Abstract: 
  • Keap1 binds to the Nrf2 transcription factor to promote its degradation, resulting in the loss of gene products that protect against oxidative stress. While cell-active small molecules have been identified that modify cysteines in Keap1 and effect the Nr ...

    Keap1 binds to the Nrf2 transcription factor to promote its degradation, resulting in the loss of gene products that protect against oxidative stress. While cell-active small molecules have been identified that modify cysteines in Keap1 and effect the Nrf2 dependent pathway, few act through a non-covalent mechanism. We have identified and characterized several small molecule compounds that specifically bind to the Keap1 Kelch-DC domain as measured by NMR, native mass spectrometry and X-ray crystallography. One compound upregulates Nrf2 response genes measured by a luciferase cell reporter assay. The non-covalent inhibition strategy presents a reasonable course of action to avoid toxic side-effects due to non-specific cysteine modification.


    Organizational Affiliation

    Biogen Idec, Drug Discovery, 12 Cambridge Center, Cambridge, MA 02142, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Kelch-like ECH-associated protein 1 ABC299Homo sapiensMutation(s): 0 
Gene Names: INRF2KEAP1KIAA0132KLHL19
Find proteins for Q14145 (Homo sapiens)
Explore Q14145 
Go to UniProtKB:  Q14145
NIH Common Fund Data Resources
PHAROS:  Q14145
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.604α = 90
b = 96.509β = 90
c = 142.462γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
XDSdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-15
    Type: Initial release
  • Version 1.1: 2013-05-22
    Changes: Database references
  • Version 1.2: 2013-07-03
    Changes: Database references