Before revision:  The database stores functional data for over 68 million genes, 52 million proteins, and 239 million domains with associated biological activity annotations from GeneOntology , KEGG, MetaCyc, and Reactome.
After revision:  The database stores functional data for over 68 million genes, 52 million proteins, and 239 million domains with associated biological activity annotations from Gene Ontology , KEGG, MetaCyc, and Reactome.