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| Species | OMA ID | Cross-ref | OMA Group | (size) |
| [B] Agrobacterium radiobacter (strain K84 / ATCC BAA-868) | AGRRK1679 |  B9JEY9 | 53947 | (116) |
| [B] Agrobacterium tumefaciens (strain C58 / ATCC 33970) | AGRT51401 | Q7CZ99 | 53947 | (116) |
| [B] Rhizobium leguminosarum bv. viciae (strain 3841) | RHIL32237 | Q1MH34 | 53947 | (116) |
| [B] Rhizobium leguminosarum bv. trifolii (strain WSM2304) | RHILW1584 | B5ZNA3 | 53947 | (116) |
| [B] Rhizobium etli (strain CFN 42 / ATCC 51251) | RHIEC1878 | Q2K8W7 | 53947 | (116) |
| [B] Rhizobium etli (strain CIAT 652) | RHIE61991 | B3PYR2 | 53947 | (116) |
| [B] Erythrobacter litoralis (strain HTCC2594) | ERYLH1275 | Q2NAB8 | 53947 | (116) |
| [B] Jannaschia sp. (strain CCS1) | JANSC1685 | Q28RQ4 | 63410 | (44) |
| [B] Magnetospirillum magneticum (strain AMB-1 / ATCC 700264) | MAGMM2291 |  BAE51120.1 | 53947 | (116) |