9BY4 | pdb_00009by4

Co-crystal structure of the kinase domain of EGFR with non-covalent osimertinib

• PDB DOI: https://doi.org/10.2210/pdb9BY4/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-05-23 Released: 2025-05-28 
• Deposition Author(s): Ashtekar, K.D., Stayrook, S.E., Lemmon, M.A.
• Funding Organization(s): National Institutes of Health/National Cancer Institute (NIH/NCI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free: 
  0.220 (Depositor), 0.225 (DCC) 
• R-Value Work: 
  0.196 (Depositor), 0.202 (DCC) 
• R-Value Observed: 
  0.197 (Depositor) 

Starting Model: experimental

Literature

Comprehensive characterization of EGFR-tyrosine kinase inhibitor interactions probed by hydrogen-deuterium exchange and mass spectrometry (HDX-MS)

Tsutsui, Y., Ashtekar, K.D., Stayrook, S., Lemmon, M.A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 39.41 kDa 
• Atom Count: 2,643 
• Modeled Residue Count: 316 
• Deposited Residue Count: 338 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Epidermal growth factor receptor	A	338	Homo sapiens	Mutation(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 GTEx:  ENSG00000146648

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
Q6K (Subject of Investigation/LOI)	C [auth A]	~{N}-[2-[2-(dimethylamino)ethyl-methyl-amino]-4-methoxy-5-[[4-(1-methylindol-3-yl)pyrimidin-2-yl]amino]phenyl]propanamide C28 H35 N7 O2 UHTBXBRYOKJTAN-UHFFFAOYSA-N
PDO	B [auth A], E [auth A], F [auth A]	1,3-PROPANDIOL C3 H8 O2 YPFDHNVEDLHUCE-UHFFFAOYSA-N
CA	D [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free:  0.220 (Depositor), 0.225 (DCC) 
• R-Value Work:  0.196 (Depositor), 0.202 (DCC) 
• R-Value Observed: 0.197 (Depositor) 

Space Group: I 2 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 145.968	α = 90
b = 145.968	β = 90
c = 145.968	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-05-28 
Deposition Author(s): Ashtekar, K.D., Stayrook, S.E., Lemmon, M.A.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	GR110199

Revision History  

• Version 1.0: 2025-05-28
  Type: Initial release
  
• Version 1.1: 2025-10-01
  Changes: Data collection