Brought to you by the creators of the Human Metabolome Database (HMDB) and DrugBank:

SMPDB (The Small Molecule Pathway Database) is an interactive, visual database containing more than 618 small molecule pathways found in humans. More than 70% of these pathways (>433) are not found in any other pathway database. SMPDB is designed specifically to support pathway elucidation and pathway discovery in metabolomics, transcriptomics, proteomics and systems biology. It is able to do so, in part, by providing exquisitely detailed, fully searchable, hyperlinked diagrams of human metabolic pathways, metabolic disease pathways, metabolite signaling pathways and drug-action pathways. All SMPDB pathways include information on the relevant organs, subcellular compartments, protein cofactors, protein locations, metabolite locations, chemical structures and protein quaternary structures. Each small molecule is hyperlinked to detailed descriptions contained in the HMDB or DrugBank and each protein or enzyme complex is hyperlinked to UniProt. All SMPDB pathways are accompanied with detailed descriptions and references, providing an overview of the pathway, condition or processes depicted in each diagram. The database is easily browsed and supports full text, sequence and chemical structure searching. Users may query SMPDB with lists of metabolite names, drug names, genes/protein names, SwissProt IDs, GenBank IDs, Affymetrix IDs or Agilent microarray IDs. These queries will produce lists of matching pathways and highlight the matching molecules on each of the pathway diagrams. Gene, metabolite and protein concentration data can also be visualized through SMPDB's mapping interface. All of SMPDB's images, image maps, descriptions and tables are downloadable.

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SMPDB is supported by David Wishart, Departments of Computing Science & Biological Sciences, University of Alberta. Use and re-distribution of the data, in whole or in part, for commercial purposes requires explicit permission of the authors and explicit acknowledgment of the source material (SMPDB) and the original publication (see below). We ask that users who download significant portions of the database cite the SMPDB paper in any resulting publications.

  1. Wishart DS, Frolkis A, Knox C, et al., SMPDB: The Small Molecule Pathway Database. Nucleic Acids Res. 2010 Jan;38(Database issue):D480-7.
  2. Jewison T, Su Y, Disfany FM, et al., SMPDB 2.0: Big Improvements to the Small Molecule Pathway Database Nucleic Acids Res. 2013 Submitted.