| [A] Ignicoccus hospitalis (strain KIN4/I / DSM 18386 / JCM 14125) | IGNH400590 | RNP1_IGNH4 | Ribonuclease P subunit |
| [A] Staphylothermus marinus (strain ATCC 43588 / DSM 3639 / F1) | STAMF01011 | RNP1_STAMF | Ribonuclease P, Rpp29 |
| [A] Methanobrevibacter smithii (strain PS / ATCC 35061 / DSM 861) | METS300744 | RNP1_METS3 | Ribonuclease P, subunit P29 |
| [A] Methanosphaera stadtmanae (strain DSM 3091) | METST00864 | RNP1_METST | putative ribonuclease P, component 1 |
| [A] Methanobacterium thermoautotrophicum | METTH00011 | RNP1_METTH | Ribonuclease P protein component 1 |
| [A] Methanocaldococcus jannaschii | METJA00475 | RNP1_METJA | Ribonuclease P protein component 1 |
| [A] Methanococcus aeolicus (strain Nankai-3 / ATCC BAA-1280) | META301375 | RNP1_META3 | Ribonuclease P, Rpp29 |
| [A] Methanococcus maripaludis | METMP01407 | RNP1_METMP | Ribonuclease P protein component 1 |
| [A] Methanococcus maripaludis (strain C5 / ATCC BAA-1333) | METM500171 | A4FWB3 | Ribonuclease P, Rpp29 |
| [A] Methanococcus maripaludis (strain C6 / ATCC BAA-1332) | METM601252 | A9A9Q6 | Ribonuclease P, Rpp29 |
| [A] Methanococcus maripaludis (strain C7 / ATCC BAA-1331) | METM700645 | A6VGZ3 | Ribonuclease P, Rpp29 |
| [A] Methanococcus vannielii (strain SB / ATCC 35089 / DSM 1224) | METVS00706 | RNP1_METVS | Ribonuclease P, Rpp29 |
| [A] Methanosaeta thermophila (strain DSM 6194 / PT) | METTP01660 | A0B9W2 | Ribonuclease P, Rpp29 PFAM: Ribonuclease P, Rpp29 KEGG: mst:Msp_0900 putative ribonuclease P, component 1 |
| [A] Methanococcoides burtonii (strain DSM 6242) | METBU00009 | RNP1_METBU | Ribonuclease P subunit |
| [A] Methanosarcina acetivorans | METAC01036 | RNP1_METAC | Ribonuclease P protein component 1 |
| [A] Methanosarcina barkeri (strain Fusaro / DSM 804) | METBF00093 | RNP1_METBF | putative ribonuclease P subunit P29 |
| [A] Methanosarcina mazei | METMA02086 | RNP1_METMA | Ribonuclease P protein component 1 |
| [A] Methanopyrus kandleri | METKA01215 | RNP1_METKA | Ribonuclease P protein component 1 |
| [A] Pyrococcus abyssi | PYRAB00332 | RNP1_PYRAB | Ribonuclease P protein component 1 |
| [A] Pyrococcus furiosus | PYRFU01804 | RNP1_PYRFU | Ribonuclease P protein component 1 |
| [A] Pyrococcus horikoshii | PYRHO01832 | RNP1_PYRHO | Ribonuclease P protein component 1 |