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KEGG: Kyoto Encyclopedia of Genes and Genomes

KEGG is a database resource for understanding high-level functions and utilities of the biological system, such as the cell, the organism and the ecosystem, from molecular-level information, especially large-scale molecular datasets generated by genome sequencing and other high-throughput experimental technologies.
See Release notes (October 1, 2019) for new and updated features.
Notice: KEGG/GenomeNet server machines are being replaced. Please watch for the dates when BlastKOALA and other computational services will be unavailable.

egg Main entry point to the KEGG web service
KEGG2
KEGG Table of Contents   [Update notes | Release history]
egg Data-oriented entry points
KEGG PATHWAY
KEGG pathway maps
KEGG BRITE
BRITE hierarchies and tables
KEGG MODULE
KEGG modules
KEGG ORTHOLOGY
KO functional orthologs   [Annotation]
KEGG GENOME
Genomes   [Pathogen | Virus | Plant]
KEGG GENES
Genes and proteins   [SeqData]
KEGG COMPOUND
Small molecules
KEGG GLYCAN
Glycans
KEGG REACTION
Biochemical reactions   [RModule]
KEGG ENZYME
Enzyme nomenclature
KEGG NETWORK
Disease-related network elements
KEGG DISEASE
Human diseases   [Cancer]
KEGG DRUG
Drugs   [New drug approvals]
KEGG MEDICUS
Health information resource   [Drug labels search]
egg Organism-specific entry points
KEGG Organisms
Enter org code(s)   hsa   hsa eco
egg Analysis tools
KEGG Mapper
KEGG PATHWAY/BRITE/MODULE mapping tools
BlastKOALA
BLAST-based KO annotation and KEGG mapping
GhostKOALA
GHOSTX-based KO annotation and KEGG mapping
KofamKOALA
HMM profile-based KO annotation and KEGG mapping
BLAST/FASTA
Sequence similarity search
SIMCOMP
Chemical structure similarity search