Table 2.
Comparisons between Candidatus Methylomirabilis oxyfera (M. oxyfera) and Candidatus Methanoperedens nitroreducens (M. nitroreducens), the two known species responsible for N-DAMO
| Features | M. oxyfera | M. nitroreducens |
|---|---|---|
| Habitat | Freshwater environments | Freshwater environments |
| Pure culture | No | No |
| Kingdom | Bacteria | Archaea |
| Affiliated microbes | NC10 | ANME-2d |
| Shape | Atypical polygonal | Irregular coccus |
| Growth conditions | Anaerobic | Anaerobic |
| Produce O2 | Yes | No |
| Electron acceptor (N-DAMO) | Nitrite | Nitrate |
| Mechanism hypothesis (N-DAMO) | Aerobic methane oxidation | Reverse methanogenesis |
| Related gene (N-DAMO) | pmo gene cluster | mcr gene cluster |
ANME, anaerobic methanotrophic archaea; N-DAMO, nitrate/nitrite-dependent anaerobic methane oxidation.