5FED

EGFR kinase domain in complex with a covalent aminobenzimidazole inhibitor.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history. 


Literature

Discovery of (R,E)-N-(7-Chloro-1-(1-[4-(dimethylamino)but-2-enoyl]azepan-3-yl)-1H-benzo[d]imidazol-2-yl)-2-methylisonicotinamide (EGF816), a Novel, Potent, and WT Sparing Covalent Inhibitor of Oncogenic (L858R, ex19del) and Resistant (T790M) EGFR Mutants for the Treatment of EGFR Mutant Non-Small-Cell Lung Cancers.

Lelais, G., Epple, R., Marsilje, T.H., Long, Y.O., McNeill, M., Chen, B., Lu, W., Anumolu, J., Badiger, S., Bursulaya, B., DiDonato, M., Fong, R., Juarez, J., Li, J., Manuia, M., Mason, D.E., Gordon, P., Groessl, T., Johnson, K., Jia, Y., Kasibhatla, S., Li, C., Isbell, J., Spraggon, G., Bender, S., Michellys, P.Y.

(2016) J Med Chem 59: 6671-6689

  • DOI: https://doi.org/10.1021/acs.jmedchem.5b01985
  • Primary Citation of Related Structures:  
    5FED, 5FEE, 5FEQ

  • PubMed Abstract: 

    • Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed ...

    Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed. Herein, we describe our approach toward the discovery of 47 (EGF816, nazartinib), a novel, covalent mutant-selective EGFR inhibitor with equipotent activity on both oncogenic and T790M-resistant EGFR mutations. Through molecular docking studies we converted a mutant-selective high-throughput screening hit (7) into a number of targeted covalent EGFR inhibitors with equipotent activity across mutants EGFR and good WT-EGFR selectivity. We used an abbreviated in vivo efficacy study for prioritizing compounds with good tolerability and efficacy that ultimately led to the selection of 47 as the clinical candidate.

    Organizational Affiliation: 

    Genomics Institute of the Novartis Research Foundation , 10675 John J. Hopkins Drive, San Diego, California 92121, United States.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Epidermal growth factor receptor328Homo sapiensMutation(s): 0 
Gene Names: EGFR, ERBB, ERBB1, HER1
EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
PHAROS:  P00533
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00533
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5X4
Query on 5X4
Download Ideal Coordinates CCD File 
B [auth A]~{N}-[7-methyl-1-[(3~{R})-1-propanoylazepan-3-yl]benzimidazol-2-yl]-3-(trifluoromethyl)benzamide
C25 H27 F3 N4 O2
DFNLNAPTJYVZSV-LJQANCHMSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 145.584α = 90
b = 145.584β = 90
c = 145.584γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2016-08-10
    Changes: Database references