| KEGG ID | KO | Definition |
| gsu:GSU1862 | K00176 | 2-oxoacid:ferredoxin oxidoreductase, ferredoxin subunit |
| gsk:KN400_1888 | K00176 | 2-oxoacid:ferredoxin oxidoreductase, ferredoxin subunit |
| gme:Gmet_1306 | K00176 | 2-oxoacid:ferredoxin oxidoreductase, ferredoxin subunit |
| gur:Gura_2240 | K00176 | 2-oxoglutarate ferredoxin oxidoreductase, delta subunit |
| glo:Glov_2310 | K00176 | 4Fe-4S ferredoxin iron-sulfur binding domain protein |
| gbm:Gbem_3087 | K00176 | 2-oxoacid:ferredoxin oxidoreductase, ferredoxin subunit |
| geo:Geob_3006 | K00176 | 2-oxoacid:ferredoxin oxidoreductase, ferredoxin subunit |
| gem:GM21_1174 | K00176 | 4Fe-4S ferredoxin iron-sulfur binding domain protein |
| geb:GM18_3060 | K00176 | 4Fe-4S ferredoxin iron-sulfur binding domain protein |
| gpi:GPICK_06300 | K00176 | tungsten formylmethanofuran dehydrogenase |
| gao:A2G06_07545 | K00176 | tungsten formylmethanofuran dehydrogenase |
| gsb:GSUB_06815 | K00176 | hypothetical protein |
| des:DSOUD_1746 | K00176 | putative ferredoxin |