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|
| Species | OMA ID | Cross-ref | OMA Group | (size) |
| [B] Sphingopyxis alaskensis | SPHAL1775 |  Q1GS60 | 200738 | (50) |
| [B] Dinoroseobacter shibae (strain DFL 12) | DINSH1592 | A8LKY6 | 200752 | (306) |
| [B] Paracoccus denitrificans (strain Pd 1222) | PARDP1242 |  AROB_PARDP | 200752 | (306) |
| [B] Jannaschia sp. (strain CCS1) | JANSC2479 | AROB_JANSC | 200777 | (27) |
| [B] Silicibacter sp. (strain TM1040) | SILST1430 | AROB_SILST | 200738 | (50) |
| [B] Silicibacter pomeroyi | SILPO1600 | AROB_SILPO | 200752 | (306) |
| [B] Roseobacter denitrificans (strain ATCC 33942 / OCh 114) | ROSDO2852 | AROB_ROSDO | 200777 | (27) |
| [B] Rhodobacter sphaeroides (strain ATCC 17025 / ATH 2.4.3) | RHOS51432 | AROB_RHOS5 | 200752 | (306) |
| [B] Rhodobacter sphaeroides (strain KD131 / KCTC 12085) | RHOSK1131 | AROB_RHOSK | 200752 | (306) |
| [B] Rhodobacter sphaeroides (strain ATCC 17029 / ATH 2.4.9) | RHOS11451 | AROB_RHOS1 | 200752 | (306) |