| Q89GX0 | HIS81_BRADU | Bradyrhizobium diazoefficiens (strain JCM 10833 / IAM 13628 / NBRC 14792 / USDA 110) | hisC1 blr6225 | Detail |
| A7ICA9 | HIS8_XANP2 | Xanthobacter autotrophicus (strain ATCC BAA-1158 / Py2) | hisC Xaut_0394 | Detail |
| P07172 | HIS8_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | HIS5 YIL116W | Detail |
| Q82WM3 | HIS81_NITEU | Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298) | hisC1 NE0647 | Detail |
| Q81P62 | HIS82_BACAN | Bacillus anthracis | hisC2 hisC-2 BA_2955 GBAA_2955 BAS2746 | Detail |
| Q6CW36 | MCD4_KLULA | Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica) | MCD4 KLLA0B07249g | Detail |
| Q7SAP1 | MCD4_NEUCR | Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) | mcd-4 B2N18.290 NCU07999 | Detail |
| Q49VS0 | HIS8_STAS1 | Staphylococcus saprophyticus subsp. saprophyticus (strain ATCC 15305 / DSM 20229 / NCIMB 8711 / NCTC 7292 / S-41) | hisC SSP1995 | Detail |
| C6E916 | HIS8_GEOSM | Geobacter sp. (strain M21) | hisC GM21_0220 | Detail |
| Q3SV41 | HIS8_NITWN | Nitrobacter winogradskyi (strain ATCC 25391 / DSM 10237 / CIP 104748 / NCIMB 11846 / Nb-255) | hisC Nwi_0583 | Detail |