Article,

CO: A chemical ontology for identification of functional groups and semantic comparison of small molecules

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\FEBS\ Letters, 579 (21): 4685 - 4691 (2005)
DOI: http://dx.doi.org/10.1016/j.febslet.2005.07.039

Abstract

A novel chemical ontology based on chemical functional groups automatically, objectively assigned by a computer program, was developed to categorize small molecules. It has been applied to PubChem and the small molecule interaction database to demonstrate its utility as a basic pharmacophore search system. Molecules can be compared using a semantic similarity score based on functional group assignments rather than 3D shape, which succeeds in identifying small molecules known to bind a common binding site. This ontology will serve as a powerful tool for searching chemical databases and identifying key functional groups responsible for biological activities.

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