| P62350 | HIS2_THET2 | Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039) | hisI hisIE TT_C1080 | Detail |
| Q88D15 | HIS3_PSEPK | Pseudomonas putida (strain ATCC 47054 / DSM 6125 / NCIMB 11950 / KT2440) | hisI PP_5014 | Detail |
| B1ILB1 | HIS3_CLOBK | Clostridium botulinum (strain Okra / Type B1) | hisI CLD_2979 | Detail |
| Q3M244 | HIS3_TRIV2 | Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis) | hisI Ava_B0230 | Detail |
| Q18DH0 | HIS3_HALWD | Haloquadratum walsbyi (strain DSM 16790 / HBSQ001) | hisI HQ_1022A | Detail |
| Q9HN23 | HIS3_HALSA | Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) (Halobacterium halobium) | hisI hisJ VNG_2284G | Detail |
| A6T375 | HIS3_JANMA | Janthinobacterium sp. (strain Marseille) (Minibacterium massiliensis) | hisI mma_3282 | Detail |
| P62392 | HIS3_LEPIC | Leptospira interrogans serogroup Icterohaemorrhagiae serovar copenhageni (strain Fiocruz L1-130) | hisI LIC_13016 | Detail |
| P74755 | HIS2_SYNY3 | Synechocystis sp. (strain PCC 6803 / Kazusa) | hisI hisIE slr0608 | Detail |
| Q9X7C3 | HIS3_MYCLE | Mycobacterium leprae (strain TN) | hisI ML1264 MLCB1610.27 | Detail |