| CDS description | CDS accession | Island | Host Description |
|---|
| nitrogenase molybdenum-iron protein alpha subunit | NC_017192:20404:28576 | NC_017192:20404 | Arcobacter sp. L, complete genome |
| nitrogenase molybdenum-iron protein alpha subunit | NC_011565:777929:784554 | NC_011565:777929 | Candidatus Azobacteroides pseudotrichonymphae genomovar. CFP2, |
| nitrogenase molybdenum-iron protein alpha subunit NifD | NC_018664:2279687:2294803 | NC_018664:2279687 | Clostridium acidurici 9a chromosome, complete genome |