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The Human Metabolome Database (HMDB) 4.0 significantly expands human metabolite data, including spectra and pathways. This update enhances its utility for metabolomics research and related scientific fields.

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Area of Science:

  • Metabolomics
  • Bioinformatics
  • Biochemistry

Background:

  • The Human Metabolome Database (HMDB) is a critical resource for human metabolic studies.
  • Previous versions have established HMDB as a standard metabolomic reference.
  • Continuous evolution is necessary to meet researcher needs and web standards.

Purpose of the Study:

  • To detail the significant upgrades in HMDB version 4.0.
  • To highlight new data types and improved functionalities.
  • To underscore the enhanced utility of HMDB for diverse scientific applications.

Main Methods:

  • Database expansion with threefold increase in annotated metabolites.
  • Augmented spectral data, including predicted MS/MS and GC-MS.
  • Incorporation of new data on metabolite-SNP interactions and pharmacometabolomics.

Main Results:

  • HMDB 4.0 features a nearly threefold increase in annotated metabolites.
  • Experimental spectra increased nearly fourfold, and metabolic pathways by 60-fold.
  • New predicted spectral data and metabolite structures aid novel metabolite identification.

Conclusions:

  • HMDB 4.0 represents a major advancement in the HMDB resource.
  • Improvements enhance ease of use and expand applications in medicine and science.
  • The updated database supports advanced metabolomic research and discovery.