| A4FZ85 | HIS4_METM5 | Methanococcus maripaludis (strain C5 / ATCC BAA-1333) | hisA MmarC5_1221 | Detail |
| A1KAV5 | HIS4_AZOSB | Azoarcus sp. (strain BH72) | hisA azo3345 | Detail |
| A6VJ52 | HIS4_METM7 | Methanococcus maripaludis (strain C7 / ATCC BAA-1331) | hisA MmarC7_1415 | Detail |
| Q0AEU2 | HIS4_NITEC | Nitrosomonas eutropha (strain DSM 101675 / C91) | hisA Neut_1908 | Detail |
| P59520 | HIS4_BUCBP | Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp) | hisA bbp_098 | Detail |
| P57205 | HIS4_BUCAI | Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon pisum symbiotic bacterium) | hisA BU104 | Detail |
| B8FP23 | HIS4_DESHD | Desulfitobacterium hafniense (strain DCB-2 / DSM 10664) | hisA Dhaf_1496 | Detail |
| Q24QJ4 | HIS4_DESHY | Desulfitobacterium hafniense (strain Y51) | hisA DSY3909 | Detail |
| A0JUZ7 | HIS4_ARTS2 | Arthrobacter sp. (strain FB24) | hisA Arth_1473 | Detail |
| B7NQG6 | HIS4_ECO7I | Escherichia coli O7:K1 (strain IAI39 / ExPEC) | hisA ECIAI39_0994 | Detail |