| A6Q4V9 | HIS4_NITSB | Nitratiruptor sp. (strain SB155-2) | hisA NIS_1411 | Detail |
| Q4FNT6 | HIS4_PELUB | Pelagibacter ubique (strain HTCC1062) | hisA SAR11_0330 | Detail |
| A2C1N4 | HIS4_PROM1 | Prochlorococcus marinus (strain NATL1A) | hisA NATL1_08361 | Detail |
| Q2S296 | HIS4_SALRD | Salinibacter ruber (strain DSM 13855 / M31) | hisA SRU_1564 | Detail |
| A4X9Q0 | HIS4_SALTO | Salinispora tropica (strain ATCC BAA-916 / DSM 44818 / CNB-440) | hisA Strop_3190 | Detail |
| A8FWD0 | HIS4_SHESH | Shewanella sediminis (strain HAW-EB3) | hisA Ssed_2546 | Detail |
| Q0HJ98 | HIS4_SHESM | Shewanella sp. (strain MR-4) | hisA Shewmr4_1795 | Detail |
| Q5HCM3 | HIS4_STAAC | Staphylococcus aureus (strain COL) | hisA SACOL2698 | Detail |
| Q2FDI7 | HIS4_STAA3 | Staphylococcus aureus (strain USA300) | hisA SAUSA300_2607 | Detail |
| A5V9V9 | HIS4_SPHWW | Sphingomonas wittichii (strain RW1 / DSM 6014 / JCM 10273) | hisA Swit_2719 | Detail |