| [A] Methanobrevibacter smithii (strain PS / ATCC 35061 / DSM 861) | METS301009 | A5ULZ6 | Methyl-coenzyme M reductase, beta subunit, McrB |
| [A] Methanobacterium thermoautotrophicum | METTH01145 | MCRB_METTH | Methyl-coenzyme M reductase I subunit beta |
| [A] Methanocaldococcus jannaschii | METJA00869 | MCRB_METJA | Methyl-coenzyme M reductase I subunit beta |
| [A] Methanococcus aeolicus (strain Nankai-3 / ATCC BAA-1280) | META301247 | A6UWG8 | Coenzyme-B sulfoethylthiotransferase |
| [A] Methanococcus maripaludis | METMP01555 | Q6LWZ9 | Methyl-coenzyme M reductase I, beta subunit |
| [A] Methanococcus maripaludis (strain C5 / ATCC BAA-1333) | METM500021 | A4FVX0 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanococcus maripaludis (strain C6 / ATCC BAA-1332) | METM601102 | A9A9A6 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanococcus maripaludis (strain C7 / ATCC BAA-1331) | METM700795 | A6VHE3 | Coenzyme-B sulfoethylthiotransferase |
| [A] Methanococcus vannielii (strain SB / ATCC 35089 / DSM 1224) | METVS00855 | A6UQK1 | Coenzyme-B sulfoethylthiotransferase |
| [A] Methanoregula boonei (strain 6A8) | METB600580 | A7I5U3 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanocorpusculum labreanum (strain ATCC 43576 / DSM 4855 / Z) | METLZ01551 | A2STS3 | Hypothetical protein |
| [A] Methanoculleus marisnigri (strain ATCC 35101 / DSM 1498 / JR1) | METMJ00602 | A3CT50 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanosphaerula palustris (strain ATCC BAA-1556 / DSM 19958 / E1-9c) | METPE02194 | B8GE89 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanospirillum hungatei (strain JF-1 / DSM 864) | METHJ02023 | Q2FSD8 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanosaeta thermophila (strain DSM 6194 / PT) | METTP00555 | A0B6N9 | Methyl-coenzyme M reductase, beta subunit PFAM: Methyl-coenzyme M reductase, beta subunit KEGG: mma:MM1244 methyl-coenzyme M reductase, beta subunit |
| [A] Methanococcoides burtonii (strain DSM 6242) | METBU02217 | Q12TF4 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanosarcina acetivorans | METAC04358 | Q8THG7 | Methyl coenzyme M reductase, subunit beta |
| [A] Methanosarcina barkeri (strain Fusaro / DSM 804) | METBF00868 | MCRB_METBF | methyl-coenzyme M reductase, beta subunit |
| [A] Methanosarcina mazei | METMA01225 | Q8PXH4 | Methyl-coenzyme M reductase, beta subunit |
| [A] Methanopyrus kandleri | METKA00651 | Q49601 | Methyl coenzyme M reductase, beta subunit |
| [A] Uncultured methanogenic archaeon RC-I | UNCMA01037 | Q0W343 | methyl-coenzyme M reductase, beta subunit |