Table 3.
The distribution of pathways in MetaCyc based on pathway ontology
| Biosynthesis (902) | Secondary Metabolites Biosynthesis (351) |
| Cofactors, Prosthetic Groups, Electron Carriers Biosynthesis (160) | |
| Amino acids Biosynthesis (105) | |
| Fatty Acids and Lipids Biosynthesis (101) | |
| Carbohydrates Biosynthesis (70) | |
| Hormones Biosynthesis (40) | |
| Amines and Polyamines Biosynthesis (32) | |
| Cell structures Biosynthesis (31) | |
| Nucleosides and Nucleotides Biosynthesis (20) | |
| Other Biosynthesis (16) | |
| Aromatic Compounds Biosynthesis (13) | |
| Siderophore Biosynthesis (7) | |
| Metabolic Regulators Biosynthesis (4) | |
| Aminoacyl-tRNA Charging (4) | |
| Degradation/Utilization/ Assimilation (639) | Aromatic Compounds Degradation (152) |
| Amino Acids Degradation (113) | |
| Inorganic Nutrients Metabolism (72) | |
| Secondary Metabolites Degradation (58) | |
| Carbohydrates Degradation (52) | |
| Amines and Polyamines Degradation (40) | |
| Chlorinated Compounds Degradation (39) | |
| Carboxylates Degradation (30) | |
| Degradation/Utilization/Assimilation -Other (26) | |
| C1 Compounds Utilization and Assimilation (24) | |
| Fatty Acid and Lipids Degradation (18) | |
| Alcohols Degradation (14) | |
| Hormones Degradation (15) | |
| Aldehyde Degradation (12) | |
| Nucleosides and Nucleotides Degradation and Recycling (9) | |
| Cofactors, Prosthetic Groups, Electron Carriers Degradation (2) | |
| Generation of precursor metabolites and energy (124) | Fermentation (34) |
| Respiration (25) | |
| Chemoautotrophic Energy Metabolism (14) | |
| Methanogenesis (12) | |
| Electron Transfer (11) | |
| TCA cycle (9) | |
| Glycolysis (6) | |
| Photosynthesis (6) | |
| Pentose Phosphate Pathways (4) | |
| Other (3) | |
| Detoxification (16) | Methylglyoxal Detoxification (8) |
| Arsenate Detoxification (3) | |
| Acid Resistance (2) | |
| Mercury Detoxification (1) |
Pathways classified directly under the top-level classes are not shown. The number of pathways within each class is presented in parentheses. Some pathways may be classified under more than one class.