Kyoto Encyclopedia of Genes and Genomes

KEGG provides databases and tools for exploring pathways, genes, chemicals, diseases, and other biological information.

genome.jp/kegg
Kyoto Encyclopedia of Genes and Genomes homepage screenshot

About Kyoto Encyclopedia of Genes and Genomes

KEGG (Kyoto Encyclopedia of Genes and Genomes) is a database resource for understanding high-level functions of biological systems, such as cells, organisms, ecosystems and the biosphere, from molecular-level information, especially large-scale datasets from genome sequencing and other high-throughput technologies.

It provides databases for pathways, modules, orthologs, genes, genomes, compounds, glycans, reactions, enzymes, disease-related networks, human diseases, drugs, and health information, with tools for mapping, KO annotation, sequence similarity search, and chemical structure similarity search.

Key features

  • Pathway maps connecting molecular information to biological functions
  • KO database of functional orthologs with gene and protein entries
  • Compound, glycan, reaction, and enzyme records
  • Human disease, drug, and disease-related network data
  • KEGG Mapper for pathway, BRITE, and module mapping
  • Sequence similarity search and chemical structure similarity search
Best for: Researchers working with genome sequencing and high-throughput molecular datasets.
Good for
  • Covers genes, pathways, chemicals, diseases, and drugs in one place
  • Provides mapping, annotation, and similarity search tools alongside databases

Kyoto Encyclopedia of Genes and Genomes at a glance

Official website
genome.jp/kegg
Type
Dataset
Platforms
Web
Language
English
Country
JP
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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