| Cluster ID | Phylum/Class | Species | Amino Acid | Anticodon |
| C08010974 | Firmicutes | Thermoanaerobacter sp. X514 | Cys | GCA |
| C08011053 | Firmicutes | Thermoanaerobacter pseudethanolicus ATCC 33223 | Cys | GCA |
| C10113413 | Firmicutes | Thermoanaerobacter italicus Ab9 | Cys | GCA |
| C10113470 | Firmicutes | Thermoanaerobacter mathranii subsp. mathranii str. A3 | Cys | GCA |
| C11122480 | Firmicutes | Thermoanaerobacter brockii subsp. finnii Ako-1 | Cys | GCA |
| C11122713 | Firmicutes | Thermoanaerobacter sp. X513 | Cys | GCA |
| C11123267 | Firmicutes | Thermoanaerobacter wiegelii Rt8.B1 | Cys | GCA |
| C131004374 | Cyanobacteria | Pleurocapsa sp. PCC 7327 | Cys | GCA |
| C151045331 | Firmicutes | Thermoanaerobacter kivui DSM 2030; LKT-1 | Cys | GCA |