| T00164 | mmp | Methanococcus maripaludis S2 |
| T00491 | mmq | Methanococcus maripaludis C5 |
| T00615 | mmx | Methanococcus maripaludis C6 |
| T00553 | mmz | Methanococcus maripaludis C7 |
| T01584 | mmd | Methanococcus maripaludis X1 |
| T03692 | mmak | Methanococcus maripaludis KA1 |
| T03693 | mmao | Methanococcus maripaludis OS7 |
| T06430 | mmad | Methanococcus maripaludis DSM 2067 |
| T00552 | mae | Methanococcus aeolicus |
| T00554 | mvn | Methanococcus vannielii |
| T01251 | mvo | Methanococcus voltae |
Genus: Methanococcus