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| Species | OMA ID | Cross-ref | OMA Group | (size) |
| [B] Agrobacterium radiobacter (strain K84 / ATCC BAA-868) | AGRRK4800 |  B9JIA9 | 352118 | (20) |
| [B] Sinorhizobium medicae (strain WSM419) | SINMW3226 | A6UEN0 | 352118 | (20) |
| [B] Rhizobium loti | RHILO4864 | Q989Y1 | 352129 | (5) |
| [B] Rhizobium etli (strain CIAT 652) | RHIE65685 | B3Q1X9 | 352118 | (20) |
| [B] Rhizobium leguminosarum bv. viciae (strain 3841) | RHIL36080 | Q1M5H5 | 352118 | (20) |
| [B] Rhizobium leguminosarum bv. trifolii (strain WSM2304) | RHILW5495 | B6A326 | 352118 | (20) |
| [B] Agrobacterium tumefaciens (strain C58 / ATCC 33970) | AGRT53943 | A9CG89 | 352118 | (20) |