| モジュール |
| M00121 | Heme biosynthesis, plants and bacteria, glutamate => heme |
| M00847 | Heme biosynthesis, archaea, siroheme => heme |
| M00868 | Heme biosynthesis, animals and fungi, glycine => heme |
| M00926 | Heme biosynthesis, bacteria, glutamyl-tRNA => coproporphyrin III => heme |
|