Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 42384.82 
• Atom Count: 2348 
• Residue Count: 373 
• Unique protein chains: 1

3C1X

Crystal structure of the tyrosine kinase domain of the hepatocyte growth factor receptor c-MET in complex with a Pyrrolotriazine based inhibitor

• DOI: 10.2210/pdb3C1X/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): 4 


• Deposited: 2008-01-24 Released: 2008-03-18 
• Deposition Author(s): Sack, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.17 Å
• R-Value Free: 0.262 
• R-Value Work: 0.205 

Literature

Identification of pyrrolo[2,1-f][1,2,4]triazine-based inhibitors of Met kinase.

Schroeder, G.M., Chen, X.T., Williams, D.K., Nirschl, D.S., Cai, Z.W., Wei, D., Tokarski, J.S., An, Y., Sack, J., Chen, Z., Huynh, T., Vaccaro, W., Poss, M., Wautlet, B., Gullo-Brown, J., Kellar, K., Manne, V., Hunt, J.T., Wong, T.W., Lombardo, L.J., Fargnoli, J., Borzilleri, R.M.

(2008) Bioorg.Med.Chem.Lett. 18: 1945-1951

• PubMed: 18289854 
• DOI: 10.1016/j.bmcl.2008.01.121


• PubMed Abstract: 
  

An amide library derived from the pyrrolo[2,1-f][1,2,4]triazine scaffold led to the identification of modest inhibitors of Met kinase activity. Introduction of polar side chains at C-6 of the pyrrolotriazine core provided significant improvements in in vitro potency. The amide moiety could be replaced with acylurea and malonamide substituents to give compounds with improved potency in the Met-driven GTL-16 human gastric carcinoma cell line. Acylurea pyrrolotriazines with substitution at C-5 demonstrated single digit nanomolar kinase activity. X-ray crystallography revealed that the C-5 substituted pyrrolotriazines bind to the Met kinase domain in an ATP-competitive manner.

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Organizational Affiliation: 

Bristol-Myers Squibb Research and Development, PO Box 4000, Princeton, NJ 08543-4000, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Hepatocyte growth factor receptor	A	373	Homo sapiens	Mutation(s): 4  Gene Names: MET EC: 2.7.10.1
Find proteins for P08581 (Homo sapiens) Go to Gene View: MET Go to UniProtKB:  P08581

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CKK	A	N-{[4-({5-[(4-aminopiperidin-1-yl)methyl]pyrrolo[2,1-f][1,2,4]triazin-4-yl}oxy)-3-fluorophenyl]carbamoyl}-2-(4-fluorophenyl)acetamide C27 H27 F2 N7 O3 YQQFRBUHZZNTGY-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
CKK	IC50: 45 nM (99) BINDINGDB
CKK	IC50: 45 nM BINDINGMOAD
CKK	IC50: 45 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.17 Å
• R-Value Free: 0.262 
• R-Value Work: 0.205 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 42.781	α = 90.00
b = 46.153	β = 90.00
c = 151.022	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
AMoRE	phasing
DENZO	data reduction
BUSTER-TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-01-24 
• Released Date: 2008-03-18 
• Deposition Author(s): Sack, J.

Revision History 

• Version 1.0: 2008-03-18
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance