KEGG: Kyoto Encyclopedia of Genes and Genomes
KEGG is a database resource for understanding high-level functions and utilities of biological systems, such as cells, organisms, ecosystems and the biosphere from molecular-level information, especially large-scale molecular datasets generated by genome sequencing and other high-throughput experimental technologies.
See Release notes (April 1, 2026) for new and updated features.
See Release notes (April 1, 2026) for new and updated features.
Announcement: SSDB computation of non-reference genomes
KEGG Database
- KEGG2
- KEGG Table of Contents [Update notes | Release history]
- KEGG PATHWAY
- KEGG pathway maps
- KEGG BRITE
- BRITE hierarchies and tables
- KEGG MODULE
- KEGG modules
- KEGG ORTHOLOGY
- KO functional orthologs
- KEGG GENES
- Genes and proteins [Statistics]
- KEGG GENOME
- Genomes [Taxonomy files]
- KEGG Virus
- Virus-organism relationships
- KEGG Organisms
- KEGG COMPOUND
- Small molecules
- KEGG GLYCAN
- Glycans
- KEGG REACTION
- Biochemical reactions [RModule]
- KEGG ENZYME
- Enzyme nomenclature
- KEGG NETWORK
- Disease-related network variations
- KEGG DISEASE
- Human diseases
- KEGG DRUG
- Drugs [New drug approvals]
- KEGG MEDICUS
- Health information resource [Drug labels search]
Analysis Tools
- KEGG Mapper
- PATHWAY/BRITE/MODULE mapping tools
- KEGG Syntax
- Taxonomy-based analysis of conserved genes and gene sets
- BlastKOALA
- BLAST-based KO annotation and KEGG mapping
- GhostKOALA
- GHOSTX-based KO annotation and KEGG mapping
- BLAST/FASTA
- Sequence similarity search
- SIMCOMP
- Chemical structure similarity search