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Journal of Computer-Aided Molecular Design

, Volume 29, Issue 11, pp 1015–1024 | Cite as

Avalanche for shape and feature-based virtual screening with 3D alignment

Article

Abstract

This report introduces a new ligand-based virtual screening tool called Avalanche that incorporates both shape- and feature-based comparison with three-dimensional (3D) alignment between the query molecule and test compounds residing in a chemical database. Avalanche proceeds in two steps. The first step is an extremely rapid shape/feature based comparison which is used to narrow the focus from potentially millions or billions of candidate molecules and conformations to a more manageable number that are then passed to the second step. The second step is a detailed yet still rapid 3D alignment of the remaining candidate conformations to the query conformation. Using the 3D alignment, these remaining candidate conformations are scored, re-ranked and presented to the user as the top hits for further visualization and evaluation. To provide further insight into the method, the results from two prospective virtual screens are presented which show the ability of Avalanche to identify hits from chemical databases that would likely be missed by common substructure-based or fingerprint-based search methods. The Avalanche method is extended to enable patent landscaping, i.e., structural refinements to improve the patentability of hits for deployment in drug discovery campaigns.

Keywords

Virtual screening Shape matching Three dimensional alignment Antibacterial drug discovery 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Snowdon, Inc.PrincetonUSA
  2. 2.CMD BioscienceNew HavenUSA
  3. 3.Department of Medicine, New Jersey Medical SchoolRutgers UniversityNewarkUSA
  4. 4.Department of PharmacologyCancer Institute of New Jersey, Rutgers UniversityPiscatawayUSA

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