| モジュール |
| M00121 | Heme biosynthesis, plants and bacteria, glutamate => heme |
| M00846 | Siroheme biosynthesis, glutamyl-tRNA => siroheme |
| M00868 | Heme biosynthesis, animals and fungi, glycine => heme |
| M00924 | Cobalamin biosynthesis, anaerobic, uroporphyrinogen III => sirohydrochlorin => cobyrinate a,c-diamide |
| M00925 | Cobalamin biosynthesis, aerobic, uroporphyrinogen III => precorrin 2 => cobyrinate a,c-diamide |
| M00926 | Heme biosynthesis, bacteria, glutamyl-tRNA => coproporphyrin III => heme |
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