| Genus | Species Num | Strain Num | SOURCE |
|---|---|---|---|
| Stenotrophomonas | 3 | 6 | HMP/MGYG |
| Stigmatella | 1 | 1 | HMP |
| Streptobacillus | 1 | 1 | HMP |
| Streptococcus | 30 | 61 | HMP/MGYG |
| Streptomyces | 19 | 21 | HMP/MGYG |
| Streptosporangium | 1 | 1 | HMP |
| Stutzerimonas | 1 | 1 | HMP |
| Subdoligranulum | 1 | 1 | HMP |
| Succinatimonas | 1 | 1 | MGYG |
| Sulfitobacter | 2 | 2 | HMP |