| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Nitrobacter winogradskyi | 1 | 3 | HMP |
| Nitrococcus mobilis | 1 | 1 | HMP |
| Nitrosococcus halophilus | 1 | 1 | HMP |
| Nitrosococcus watsonii | 1 | 1 | HMP |
| Nitrosomonas europaea | 1 | 4 | HMP |
| Nitrosomonas eutropha | 1 | 6 | HMP |
| Nitrosospira multiformis | 1 | 8 | HMP |
| Nitrospira defluvii | 1 | 1 | HMP |
| Nocardia farcinica | 1 | 42 | HMP |
| Nocardioides sp. JS614 | 1 | 1 | HMP |