| B3EFT2 | HIS3_CHLL2 | Chlorobium limicola (strain DSM 245 / NBRC 103803 / 6330) | hisI Clim_2012 | Detail |
| Q30VD6 | HIS3_DESAG | Desulfovibrio alaskensis (strain G20) (Desulfovibrio desulfuricans (strain G20)) | hisI Dde_3567 | Detail |
| O74712 | HIS2_CANAX | Candida albicans (Yeast) | HIS4 | Detail |
| Q1B7H1 | HIS3_MYCSS | Mycobacterium sp. (strain MCS) | hisI Mmcs_3056 | Detail |
| Q4KJL5 | HIS31_PSEF5 | Pseudomonas fluorescens (strain ATCC BAA-477 / NRRL B-23932 / Pf-5) | hisI1 PFL_0424 | Detail |
| A0A179HLJ8 | LCSR_PURLI | Purpureocillium lilacinum (Paecilomyces lilacinus) | lcsR VFPBJ_02534 VFPFJ_04707 | Detail |
| Q0VML6 | HIS3_ALCBS | Alcanivorax borkumensis (strain ATCC 700651 / DSM 11573 / NCIMB 13689 / SK2) | hisI ABO_2134 | Detail |
| Q7VD07 | HIS2_PROMA | Prochlorococcus marinus (strain SARG / CCMP1375 / SS120) | hisI hisIE Pro_0582 | Detail |
| Q8F8K4 | HIS3_LEPIN | Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai (strain 56601) | hisI LA_0551 | Detail |
| A4T9N1 | HIS3_MYCGI | Mycolicibacterium gilvum (strain PYR-GCK) (Mycobacterium gilvum (strain PYR-GCK)) | hisI Mflv_3606 | Detail |