| CDS description | CDS accession | Island | Host Description |
|---|
| Pyruvate:ferredoxin oxidoreductase, beta subunit | NC_020389:1346358:1375649 | NC_020389:1346358 | Methanosarcina mazei Tuc01, complete genome |
| pyruvate:ferredoxin oxidoreductase, beta subunit | NC_009464:2288500:2299300 | NC_009464:2288500 | Uncultured methanogenic archaeon RC-I, complete genome |