| CDS description | CDS accession | Island | Host Description |
|---|
| nitrogenase molybdenum-iron protein subunit alpha, nitrogenase component I, nifD | NC_015687:279641:285589 | NC_015687:279641 | Clostridium acetobutylicum DSM 1731 chromosome, complete genome |
| nitrogenase molybdenum-iron protein subunit alpha | NC_014328:522045:528366 | NC_014328:522045 | Clostridium ljungdahlii ATCC 49587 chromosome, complete genome |
| nitrogenase molybdenum-iron protein subunit alpha | NC_016641:2815974:2822501 | NC_016641:2815974 | Paenibacillus terrae HPL-003 chromosome, complete genome |