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| Species | OMA ID | Cross-ref | OMA Group | (size) |
| [B] Heliobacterium modesticaldum (strain ATCC 51547 / Ice1) | HELMI290 |  B0TFI1 | 224248 | (100) |
| [B] Treponema denticola | TREDE1507 | Q73MI8 | 224248 | (100) |
| [B] Clostridium botulinum (strain Alaska E43 / type E3) | CLOBA246 | B2UYF0 | 224248 | (100) |
| [B] Clostridium botulinum (strain Eklund 17B / type B) | CLOBB247 | B2TIL9 | 224248 | (100) |
| [B] Clostridium kluyveri (strain ATCC 8527 / DSM 555 / NCIMB 10680) | CLOK5268 | A5N4X6 | 224248 | (100) |
| [B] Clostridium cellulolyticum (strain ATCC 35319 / DSM 5812 / JCM 6584 / H10) | CLOCE2286 | B8I5L6 | 224252 | (17) |
| [B] Clostridium acetobutylicum | CLOAB3042 | Q97EL9 | 224248 | (100) |
| [B] Desulforudis audaxviator (strain MP104C) | DESAP1181 | B1I426 | 224248 | (100) |
| [B] Thermoanaerobacter pseudethanolicus (strain ATCC 33223 / 39E) | THEP32070 | B0K7X3 | 224248 | (100) |
| [B] Carboxydothermus hydrogenoformans (strain Z-2901 / DSM 6008) | CARHZ1322 | Q3ACC7 | 224248 | (100) |