| Status | Description | Organism | Genes | References |
|---|---|---|---|---|
| FO synthase | Aromatoleum aromaticum | fbiC | ||
| 7,8-didemethyl-8-hydroxy-5-deazariboflavin synthase, CofH subunit | Afipia broomeae | GM78-779 | ||
| FO synthase | Acidothermus cellulolyticus | fbiC | ||
| FO synthase subunit 2 | Anabaena cylindrica | G12Z9-2659 | ||
| FO synthase subunit 1 | Anabaena cylindrica | G12Z9-4299 | ||
| FO synthase subunit 2 1 | Actinoplanes friuliensis | G12YQ-305 | ||
| FO synthase | Actinoplanes friuliensis | fbiC | ||
| FO synthase subunit 1 | Archaeoglobus fulgidus | cofG | ||
| FO synthase | Aeromicrobium marinum | fbiC | ||
| FO synthase | Amycolatopsis mediterranei | fbiC |