| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Metamycoplasma arthritidis | 1 | 2 | HMP |
| Metamycoplasma hominis | 2 | 55 | HMP/MGYG |
| Methanobrevibacter oralis | 1 | 5 | MGYG |
| Methanobrevibacter smithii | 2 | 33 | MGYG |
| Methanomassiliicoccus luminyensis | 1 | 2 | MGYG |
| Methanosphaera cuniculi | 1 | 2 | MGYG |
| Methanosphaera stadtmanae | 2 | 3 | HMP/MGYG |
| Methylocella silvestris | 1 | 2 | HMP |
| Methylococcus capsulatus | 1 | 7 | HMP |
| Methylorubrum extorquens | 3 | 15 | HMP |