Cited by 91Computational Drug Discovery MethodsMachine Learning in Materials ScienceGraph theory and applications

An automated PLS search for biologically relevant QSAR descriptors

Olah, Marius, Bologa, Cristian, Oprea, Tudor I.·2004·Journal of Computer-Aided Molecular Design

Abstract

An automated PLS engine, WB-PLS, was applied to 1632 QSAR series with at least 25 compounds per series extracted from WOMBAT (WOrld of Molecular BioAcTivity). WB-PLS extracts a single Y variable per series, as well as pre-computed X variables from a table. The table contained 2D descriptors, the drug-like MDL 320 keys as implemented in the Mesa A&C Fingerprint module, and in-house generated topological-pharmacophore SMARTS counts and fingerprints. Each descriptor type was treated as a block, with or without scaling. Cross-validation, variable importance on projections (VIP) above 0.8 and q2 > or = 0.3 were applied for model significance. Among cross-validation methods, leave-one-in-seven-out (CV7) is a better measure of model significance, compared to leave-one-out (measuring redundancy) and leave-half-out (too restrictive). SMARTS counts overlap with 2D descriptors (having a more quantitative nature), whereas MDL keys overlap with in-house fingerprints (both are more qualitative). The SMARTS counts is the most effective descriptor system, when compared to the other three. At the individual level, size-related descriptors and topological indices (in the 2D property space), and branched SMARTS, aromatic and ring atom types and halogens are found to be most relevant according to the VIP criterion.

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Crossref · 10.1007/s10822-004-4060-8

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  • Recent lessons shared by scientists at AstraZeneca, Bayer, Merck and GSK highlight the complexities of ADMET property prediction.

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Authors
Olah, M., Bologa, C., & Oprea, T. I.
Affiliations
University of New Mexico (US)
Corresponding author
Oprea, Tudor I.
Venue
Journal of Computer-Aided Molecular Design
Published
2004-07
Volume
18
Issue
7-9
Pages
437-449
ISSN
  • 0920-654X (ISSN-L)
  • 1573-4951
OpenAlex
W2068176326
Cited by
91
References
46
Citations by year
2026: 3 · 2025: 1 · 2024: 4 · 2023: 4 · 2022: 3 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 5 · 2015: 4 · 2014: 4 · 2013: 5 · 2012: 4
FWCI
4.89
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Computer-Aided Molecular Design (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
  • Physical Sciences › Mathematics › Geometry and Topology › Graph theory and applications
Keywords
partial least squares, wombats, 2D molecular descriptors, pharmacophore fingerprints, variable importance in projection, cross-validation, bioactivity prediction, topological indices
MeSH terms
Automation, Databases, Factual, Information Storage and Retrieval, Quantitative Structure-Activity Relationship

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