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| Species | OMA ID | Cross-ref | OMA Group | (size) |
| [A] Natronomonas pharaonis (strain DSM 2160 / ATCC 35678) | NATPD1598 |  Q3IQ96 | 52018 | (25) |
| [A] Halobacterium salinarium | HALSA464 | Q9HRP9 | 68974 | (7) |
| [A] Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1) | HALS3488 | B0R3R2 | 68974 | (7) |