| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Sulfitobacter indolifex | 1 | 3 | HMP |
| Sulfitobacter sp. NAS-14.1 | 1 | 1 | HMP |
| Sulfurihydrogenibium azorense | 1 | 1 | HMP |
| Sulfurihydrogenibium yellowstonense | 1 | 1 | HMP |
| Sulfurimonas denitrificans | 1 | 1 | HMP |
| Sulfurimonas gotlandica | 1 | 2 | HMP |
| Sulfurospirillum deleyianum | 1 | 1 | HMP |
| Sulfurovum sp. NBC37-1 | 1 | 1 | HMP |
| Sutterella parvirubra | 1 | 2 | MGYG |
| Sutterella wadsworthensis | 2 | 28 | MGYG |