| Oxidative phosphorylation |
| Photosynthesis |
| Carbon fixation in photosynthetic organisms |
| Riboflavin metabolism |
| Nitrogen metabolism |
| Metabolic pathways |
| Microbial metabolism in diverse environments |
| Vasopressin-regulated water reabsorption |
| Proximal tubule bicarbonate reclamation |
| Collecting duct acid secretion |
| Salivary secretion |
| Gastric acid secretion |
| Pancreatic secretion |
| Bile secretion |
| Amyotrophic lateral sclerosis (ALS) |