Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 35.66 kDa 
• Atom Count: 2,613 
• Modelled Residue Count: 290 
• Deposited Residue Count: 309 
• Unique protein chains: 1

 4XYF

Crystal structure of c-Met in complex with (S)-5-(8-fluoro-3-(1-(3-(2-methoxyethoxy)quinolin-6-yl)ethyl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-methylisoxazole

• PDB DOI:  https://doi.org/10.2210/pdb4XYF/pdb

• Classification: TRANSFERASE/TRANSFERASE Inhibitor
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2015-02-02 Released: 2015-03-11 
• Deposition Author(s): Whittington, D.A., Long, A.M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.236 
• R-Value Work: 0.186 
• R-Value Observed: 0.188 

Literature

Discovery of Potent and Selective 8-Fluorotriazolopyridine c-Met Inhibitors.

Peterson, E.A., Teffera, Y., Albrecht, B.K., Bauer, D., Bellon, S.F., Boezio, A., Boezio, C., Broome, M.A., Choquette, D., Copeland, K.W., Dussault, I., Lewis, R., Lin, M.H., Lohman, J., Liu, J., Potashman, M., Rex, K., Shimanovich, R., Whittington, D.A., Vaida, K.R., Harmange, J.C.

(2015) J Med Chem 58: 2417-2430

• PubMed: 25699405 
• DOI: https://doi.org/10.1021/jm501913a
• Primary Citation of Related Structures:  
  4XMO, 4XYF


• PubMed Abstract: 
  

The overexpression of c-Met and/or hepatocyte growth factor (HGF), the amplification of the MET gene, and mutations in the c-Met kinase domain can activate signaling pathways that contribute to cancer progression by enabling tumor cell proliferation, survival, invasion, and metastasis. Herein, we report the discovery of 8-fluorotriazolopyridines as inhibitors of c-Met activity. Optimization of the 8-fluorotriazolopyridine scaffold through the combination of structure-based drug design, SAR studies, and metabolite identification provided potent (cellular IC50 < 10 nM), selective inhibitors of c-Met with desirable pharmacokinetic properties that demonstrate potent inhibition of HGF-mediated c-Met phosphorylation in a mouse liver pharmacodynamic model.

---

Organizational Affiliation: 

Amgen Inc. , 360 Binney Street, Cambridge, Massachusetts 02142, United States.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hepatocyte growth factor receptor	A	309	Homo sapiens	Mutation(s): 0  Gene Names: MET EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P08581 (Homo sapiens) Explore P08581  Go to UniProtKB:  P08581
PHAROS:  P08581

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
44X	B [auth A]	6-{(1S)-1-[8-fluoro-6-(3-methyl-1,2-oxazol-5-yl)[1,2,4]triazolo[4,3-a]pyridin-3-yl]ethyl}-3-(2-methoxyethoxy)quinoline C24 H22 F N5 O3 SCRRRLBPWUHHER-HNNXBMFYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
44X	BindingDB:  4XYF	IC50: min: 1, max: 5 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.236 
• R-Value Work: 0.186 
• R-Value Observed: 0.188 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.893	α = 90
b = 43.406	β = 90
c = 157.978	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
DENZO	data reduction
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
EPMR	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-03-11 
Deposition Author(s): Whittington, D.A., Long, A.M.

Revision History  

• Version 1.0: 2015-03-11
  Type: Initial release
  
• Version 1.1: 2015-03-25
  Changes: Database references