| MMDBr0012857 | Hydrogen carbonate | Carbamoylphosphate | Carbamate kinase | Phosphorylation | RHEA | 34755880 |
| MMDBr0013173 | Uridine 5'-monophosphate | Phosphoribosyl pyrophosphate | Bifunctional protein PyrR | Transfer of phosphoribosyl group | RHEA | 34755880 |
| MMDBr0013886 | Carbamoylphosphate | Citrulline | Ornithine carbamoyltransferase | Transfer of a carbamoyl group | RHEA | 34755880 |
| MMDBr0013901 | L-Arginine | Citrulline | Arginine deiminase | Hydrolysis of l-arginine to citrulline and ammonium ion | RHEA | 34755880 |
| MMDBr0015385 | L-Arginine | L-Arginine | Putative arginine/ornithine antiporter | Transport | RHEA | 34755880 |
| MMDBr0024757 | L-Histidine | Pyruvic acid | Phosphoenolpyruvate-protein phosphotransferase | Transfer of phosphate group | RHEA | 34755880 |
