| [A] Hyperthermus butylicus (strain DSM 5456 / JCM 9403) | HYPBU01569 | A2BN89 | Conserved archaeal protein |
| [A] Caldivirga maquilingensis (strain DSMZ 13496 / IC-167) | CALMQ00041 | A8M9L4 | Putative uncharacterized protein |
| [A] Pyrobaculum aerophilum | PYRAE01558 | Q8ZVK2 | Putative uncharacterized protein |
| [A] Pyrobaculum arsenaticum (strain DSM 13514 / JCM 11321) | PYRAR01841 | A4WM44 | Hypothetical protein |
| [A] Pyrobaculum calidifontis (strain JCM 11548 / VA1) | PYRCJ00940 | A3MUR3 | Hypothetical protein |
| [A] Pyrobaculum islandicum (strain DSM 4184 / JCM 9189) | PYRIL00839 | A1RSU3 | Hypothetical protein |
| [A] Thermoproteus neutrophilus (strain DSM 2338 / JCM 9278 / V24Sta) | THENV01370 | B1Y9A0 | Putative uncharacterized protein |
| [A] Methanocaldococcus jannaschii | METJA01351 | PRNK_METJA | Polyribonucleotide 5'-hydroxyl-kinase MJ1315 |
| [A] Methanopyrus kandleri | METKA00077 | Q8TZ62 | Predicted GTPase or GTP-binding protein |
| [A] Pyrococcus abyssi | PYRAB00184 | PRNK_PYRAB | Predicted GTPase or GTP-binding protein |
| [A] Pyrococcus furiosus | PYRFU00110 | PRNK_PYRFU | Putative uncharacterized protein PF0112 |
| [A] Pyrococcus horikoshii | PYRHO00204 | PRNK_PYRHO | Putative uncharacterized protein PH0197 |
| [A] Thermococcus kodakaraensis | PYRKO01950 | PRNK_PYRKO | hypothetical protein, conserved, containing ATP/GTP-binding site motif A |
| [A] Thermococcus onnurineus (strain NA1) | THEON01958 | B6YW75 | Putative uncharacterized protein |
| [A] Uncultured methanogenic archaeon RC-I | UNCMA00194 | Q0W0M1 | conserved hypothetical protein |