| モジュール |
| M00021 | Cysteine biosynthesis, serine => cysteine |
| M00176 | Assimilatory sulfate reduction, sulfate => H2S |
| M00596 | Dissimilatory sulfate reduction, sulfate => H2S |
| M00985 | Sulfide oxidation, sulfide => sulfur |
| M00986 | Sulfur reduction, sulfur => sulfide |
| M00987 | Assimilatory sulfate reduction, plants, sulfate => H2S |
|