EPA's Dsstox Database: History of Development of a Curated Chemistry
EPA Public Access Author manuscript Comput Toxicol. Author manuscript; available in PMC 2021 January 07. About author manuscripts | Submit a manuscript Published in final edited form as: EPA Author Manuscript Author EPA Manuscript Author EPA Comput Toxicol Manuscript Author . EPA 2019 November 1; 12: . doi:10.1016/j.comtox.2019.100096. EPA’s DSSTox database: History of development of a curated chemistry resource supporting computational toxicology research Christopher M. Grulkea, Antony J. Williamsa, Inthirany Thillanadarajahb, Ann M. Richarda,* aNational Center for Computational Toxicology, Office of Research & Development, US Environmental Protection Agency, Mail Drop D143-02, Research Triangle Park, NC 27711, USA bSenior Environmental Employment Program, US Environmental Protection Agency, Research Triangle Park, NC 27711, USA Abstract The US Environmental Protection Agency’s (EPA) Distributed Structure-Searchable Toxicity (DSSTox) database, launched publicly in 2004, currently exceeds 875 K substances spanning hundreds of lists of interest to EPA and environmental researchers. From its inception, DSSTox has focused curation efforts on resolving chemical identifier errors and conflicts in the public domain towards the goal of assigning accurate chemical structures to data and lists of importance to the environmental research and regulatory community. Accurate structure-data associations, in turn, are necessary inputs to structure-based predictive models supporting hazard and risk assessments. In 2014, the legacy, manually curated DSSTox_V1 content was migrated to a MySQL data model, with modern cheminformatics tools supporting both manual and automated curation processes to increase efficiencies. This was followed by sequential auto-loads of filtered portions of three public datasets: EPA’s Substance Registry Services (SRS), the National Library of Medicine’s ChemID, and PubChem.
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