6YR9 image
Entry Detail
PDB ID:
6YR9
Keywords:
Title:
FOCAL ADHESION KINASE CATALYTIC DOMAIN IN COMPLEX WITH N-Methyl-N-(2-{[2-(2-oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-ylamino]-methyl}-phenyl)-methanesulfonamide
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2020-04-19
Release Date:
2021-02-10
Method Details:
Experimental Method:
Resolution:
1.93 Å
R-Value Free:
0.21
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Focal adhesion kinase 1
Chain IDs:A, B, C, D
Chain Length:282
Number of Molecules:4
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Structure-kinetic relationship reveals the mechanism of selectivity of FAK inhibitors over PYK2.
Cell Chem Biol 28 686 ? (2021)
PMID: 33497606 DOI: 10.1016/j.chembiol.2021.01.003

Abstact

There is increasing evidence of a significant correlation between prolonged drug-target residence time and increased drug efficacy. Here, we report a structural rationale for kinetic selectivity between two closely related kinases: focal adhesion kinase (FAK) and proline-rich tyrosine kinase 2 (PYK2). We found that slowly dissociating FAK inhibitors induce helical structure at the DFG motif of FAK but not PYK2. Binding kinetic data, high-resolution structures and mutagenesis data support the role of hydrophobic interactions of inhibitors with the DFG-helical region, providing a structural rationale for slow dissociation rates from FAK and kinetic selectivity over PYK2. Our experimental data correlate well with computed relative residence times from molecular simulations, supporting a feasible strategy for rationally optimizing ligand residence times. We suggest that the interplay between the protein structural mobility and ligand-induced effects is a key regulator of the kinetic selectivity of inhibitors of FAK versus PYK2.

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Primary Citation of related structures