Table 4. List of genes comprising the C4 photosynthetic pathway found among P. maximum unigenes.
| Putative gene | KEGG orthology | Enzyme code | Unigenes |
| Carbonic anhydrase | K01673/K01674 | 4.2.1.1 | 8 |
| Phosphoenolpyruvate carboxylase | K01595 | 4.1.1.31 | 12 |
| Aspartate aminotransferase, cytosolic | K14454 | 2.6.1.1 | 1 |
| Phosphoenolpyruvate carboxykinase | K01610 | 4.1.1.49 | 3 |
| Pyruvate kinase | K00873 | 2.7.1.40 | 10 |
| Alanine transaminase | K00814 | 2.6.1.2 | 1 |
| Malate dehydrogenase (NADP+) | K00051 | 1.1.1.82 | 3 |
| Malate dehydrogenase (oxaloacetate-decarboxylating) | K00029 | 1.1.1.40 | 4 |
| Pyruvate, orthophosphate dikinase | K01006 | 2.7.9.1 | 1 |
| Malate dehydrogenase | K00025 | 1.1.1.37 | 1 |
| Malate dehydrogenase (decarboxylating) | K00028 | 1.1.1.39 | 2 |
| Ribulose-bisphosphate carboxylase | K01602 | 4.1.1.39 | 1 |
| Aspartate aminotransferase, chloroplastic | K00811 | 2.6.1.1 | 2 |