| C3K1L3 | SYH_PSEFS | Pseudomonas fluorescens (strain SBW25) | hisS PFLU_5056 | Detail |
| Q3K7B7 | SYH_PSEPF | Pseudomonas fluorescens (strain Pf0-1) | hisS Pfl01_4600 | Detail |
| B0KPI8 | SYH_PSEPG | Pseudomonas putida (strain GB-1) | hisS PputGB1_0897 | Detail |
| Q88PJ6 | SYH_PSEPK | Pseudomonas putida (strain ATCC 47054 / DSM 6125 / NCIMB 11950 / KT2440) | hisS PP_0854 | Detail |
| B3WEM3 | SYH_LACCB | Lactobacillus casei (strain BL23) | hisS LCABL_17430 | Detail |
| Q4ZX22 | SYH_PSEU2 | Pseudomonas syringae pv. syringae (strain B728a) | hisS Psyr_1249 | Detail |
| C0MGD4 | SYH_STRS7 | Streptococcus equi subsp. zooepidemicus (strain H70) | hisS SZO_18830 | Detail |
| C3N7K1 | SYH_SULIY | Sulfolobus islandicus (strain Y.G.57.14 / Yellowstone #1) | hisS YG5714_1939 | Detail |
| Q8U431 | SYH_PYRFU | Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1) | hisS PF0264 | Detail |
| A8EZE6 | SYH_RICCK | Rickettsia canadensis (strain McKiel) | hisS A1E_04010 | Detail |