| ID | Brite hierarchy | Last update |
|---|
| 00001 | KEGG Orthology (KO) | 08-8-20 |
| 00002 | KEGG pathway modules | 08-1-1 |
| 00194 | Photosynthesis proteins | 06-9-28 |
| 00199 | Cytochrome P450 | 06-6-5 |
| 00535 | Proteoglycans | 06-3-10 |
| 01000 | Enzymes | 08-8-15 |
| 01001 | Protein kinases | 07-8-9 |
| 01002 | Peptidases | 08-7-7 |
| 01003 | Glycosyltransferases | 08-7-22 |
| 02000 | Transporters | 08-8-4 |
| 02022 | Two-component system | 08-1-25 |
| 02035 | Bacterial motility proteins | 06-6-6 |
| 03000 | Transcription factors | 08-7-3 |
| 03011 | Ribosome | 05-10-28 |
| 03012 | Translation factors | 04-9-3 |
| 03032 | DNA replication proteins | 08-3-18 |
| 03110 | Chaperones and folding catalysts | 07-7-23 |
| 04000 | Receptors and channels | 07-7-9 |
| 04031 | GTP-binding proteins | 07-2-13 |
| 04052 | Cytokines | 07-7-2 |
| 04090 | Cellular antigens | 08-7-17 |
| 04091 | Glycan binding proteins | 07-7-23 |
| 04121 | Ubiquitin system | 08-1-8 |
| 04131 | SNAREs | 06-7-11 |
| 04515 | Cell adhesion molecules (CAMs) | 05-7-20 |
| 04516 | CAM ligands | 05-7-20 |
| 04812 | Cytoskeleton proteins | 07-10-24 |
| 08001 | Compounds with biological roles | 06-7-4 |
| 08002 | Lipids | 08-4-21 |
| 08003 | Phytochemical compounds | 07-4-19 |
| 08004 | Polyketides and nonribosomal peptides | 08-7-7 |
| 08005 | Bioactive peptides | 07-5-30 |
| 08101 | Enzyme ligands | 08-7-8 |
| 08102 | Transporter substrates | 08-7-1 |
| 08103 | Ion channel ligands | 08-5-8 |
| 08104 | GPCR ligands | 07-8-7 |
| 08105 | Cytochrome P450 substrates | 06-2-7 |
| 08106 | Nuclear receptor ligands | 06-9-29 |
| 08201 | IUBMB reactions | 08-7-15 |
| 08202 | IUBMB reaction hierarchy | 08-7-15 |
| 08203 | Glycosyltransferase reactions | 08-7-22 |
| 08301 | Therapeutic category of drugs | 08-8-13 |
| 08302 | USP drug classification | 08-7-1 |
| 08303 | ATC classification | 08-8-8 |
| 08304 | TCM drugs in Japan | 08-5-13 |
| 08311 | Japanese Pharmacopoeia | 08-1-9 |
| 08401 | Pathogens and infectious diseases | 08-3-25 |
| 08402 | Human diseases | 08-3-18 |
| 08403 | ICD-10 disease classification | 08-3-25 |
| 08601 | KEGG organisms | 08-8-19 |
| 08901 | KEGG pathway maps | 08-8-4 |