Original Article

Structural studies of B-type Aurora kinase inhibitors using computational methods

Mm Neaz, M Muddassar, Fa Pasha, Seung Joo Cho
DOI: 10.1038/aps.2009.188

Abstract

Aim: To characterize the structural features of quinazoline-based Aurora B inhibitors that influence its inhibitor activity.
Methods: Two geometrical methods, Method 1 and Method 2, were used to develop the 3D-QSAR models. The most active ligand was used as the template for the alignment of all the ligands in Method 1, and a conformer of the cocrystal ligand was used as the template for the alignment of all the ligands in Method 2.
Results: The models suggest that highly active ligands can be designed by varying the R1 substituent at position 7 of the quinazoline ring with positively charged, bulky, hydrophobic groups, while bulky and hydrophobic groups around the thiazole ring are desirable for higher activity.
Conclusion: This study emphasizes that the bioactive conformer is rather different from the minima. The steric, electrostatic, and hydrophobic field effects contribute to its inhibitory activity.
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