| [A] Pyrobaculum aerophilum | PYRAE01713 | Q8ZV47 | Anthranilate synthase component II |
| [A] Haloarcula marismortui | HALMA01350 | TRPG1_HALMA | anthranilate synthase component II |
| [A] Halobacterium salinarium | HALSA01252 | TRPG_HALSA | Anthranilate synthase component II |
| [A] Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1) | HALS301299 | B0R619 | Anthranilate synthase component II |
| [A] Haloquadratum walsbyi (strain DSM 16790) | HALWD02237 | Q18FJ1 | anthranilate synthase, component II |
| [A] Halorubrum lacusprofundi (strain ATCC 49239 / DSM 5036 / JCM 8891 / ACAM 34) | HALLT01898 | B9LQ99 | Glutamine amidotransferase of anthranilate synthase |
| [A] Natronomonas pharaonis (strain DSM 2160 / ATCC 35678) | NATPD01623 | Q3IQ35 | anthranilate synthase (EC 4.1.3.27), component II 1 |
| [A] Methanosphaera stadtmanae (strain DSM 3091) | METST01030 | Q2NFE9 | TrpG Anthranilate/para-aminobenzoate synthase component II |
| [A] Methanococcus maripaludis (strain C6 / ATCC BAA-1332) | METM601639 | A9AAU3 | Glutamine amidotransferase of anthranilate synthase |
| [A] Methanospirillum hungatei (strain JF-1 / DSM 864) | METHJ01687 | Q2FKX8 | glutamine amidotransferase of anthranilate synthase or para-aminobenzoate synthase |
| [A] Methanosarcina acetivorans | METAC02843 | Q8TLP8 | Anthranilate synthase, component II |
| [A] Methanosarcina barkeri (strain Fusaro / DSM 804) | METBF03473 | Q465F0 | anthranilate synthase, component II |
| [A] Methanosarcina mazei | METMA02756 | Q8PTA0 | Anthranilate synthase, component II |
| [A] Thermoplasma volcanium | THEVO01051 | Q979V8 | Anthranilate synthase component II |