| A5USC4 | HIS7_ROSS1 | Roseiflexus sp. (strain RS-1) | hisB RoseRS_1120 | Detail |
| Q88R45 | HIS7_PSEPK | Pseudomonas putida (strain ATCC 47054 / DSM 6125 / NCIMB 11950 / KT2440) | hisB PP_0289 | Detail |
| P0CO22 | HIS7_CRYNJ | Cryptococcus neoformans var. neoformans serotype D (strain JEC21 / ATCC MYA-565) (Filobasidiella neoformans) | HIS3 CNH01620 | Detail |
| P34047 | HIS5A_ARATH | Arabidopsis thaliana (Mouse-ear cress) | HISN5A At3g22425 MCB17.17 | Detail |
| A8ZUC7 | HIS7_DESOH | Desulfococcus oleovorans (strain DSM 6200 / Hxd3) | hisB Dole_2155 | Detail |
| A1VEV3 | HIS7_DESVV | Desulfovibrio vulgaris subsp. vulgaris (strain DP4) | hisB Dvul_1953 | Detail |
| A8LQZ6 | HIS7_DINSH | Dinoroseobacter shibae (strain DSM 16493 / NCIMB 14021 / DFL 12) | hisB Dshi_0794 | Detail |
| Q5KVC7 | HIS7_GEOKA | Geobacillus kaustophilus (strain HTA426) | hisB GK3074 | Detail |
| Q39YP5 | HIS7_GEOMG | Geobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210) | hisB Gmet_0386 | Detail |
| Q10ZK3 | CPXS1_TRIEI | Trichodesmium erythraeum (strain IMS101) | cpcS1 Tery_3198 | Detail |