Journal
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
Volume 40, Issue 1, Pages 375-388Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07391102.2020.1813629
Keywords
EGFR-ligand complex; quantum theory of atoms in molecules; AlteQ approach; electron properties
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Funding
- Act 211, Government of the Russian Federation [02.A 03.21.0011]
- Ministry of Science and Higher Education of Russia [FENU-2020-0019]
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The present investigation estimated the electron properties of EGFR proteins-ligand complexes using AlteQ approach and established the relationship between electron properties and pharmacological activity. The study found that the inhibitory activity of EGFR is closely related to intermolecular contacts between protein and ligands.
The present investigation grounded on estimation of electron properties of the structures of EGFR proteins-ligand complexes using our laboratory-developed methodology AlteQ approach, which describes the molecular electron density of the complex in space for a certain point in three-dimensional coordinates. Briefly, the system embodies molecular electron density as a sum of Slater's type atomic increments of the molecular system. Further, using this methodology, we calculated different electron characteristics of selected EGFR protein-ligand complexes and established the relationship between different electron properties with their experimental pharmacological activity value (pIC(50)). The study suggested that EGFR inhibitory activity has higher correlation with intermolecular contacts of H with pi-system of aromatic ring between protein and ligands. Therefore, this created model has impact to identify and design potential ligands against EGFR in anticancer drug discovery. Communicated by Ramaswamy H. Sarma
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