KEGG is a database resource for understanding high-level functions and utilities of biological systems。
organisms，。
ecosystems and the biosphere from molecular-level information， such as cells， especially large-scale molecular datasets generated by genome sequencing and other high-throughput experimental technologies. See Release notes (July 1， 2026) for new and updated features. New article: KEGG Syntax for comparison of organisms， organism groups and viruses by conserved gene repertoires 。