Structure-based virtual screening is currently an established tool in drug lead discovery projects. Although in the last years the field saw an impressive progress in terms of algorithm development, computational performance, and retrospective and prospective applications in ligand identification, there are still long-standing challenges where further improvement is needed. In this review, we consider the conceptual frame, state-of-the-art and recent developments of three critical “structural” issues in structure-based drug lead discovery: the use of homology modeling to accurately model the binding site when no experimental structures are available, the necessity of accounting for the dynamics of intrinsically flexible systems as proteins, and the importance of explicitly consider active site water molecules, and accounting for their possible essential contribution in lead identification and optimization campaigns.

Open challenges in structure-based virtual screening: Receptor modeling, target flexibility consideration and active site water molecules description / Spyrakis, Francesca; Cavasotto, Claudio N.. - In: ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS. - ISSN 0003-9861. - 583(2015), pp. 105-119.

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