| B1L869 | HIS8_THESQ | Thermotoga sp. (strain RQ2) | hisC TRQ2_1768 | Detail |
| A7MX17 | HIS8_VIBCB | Vibrio campbellii (strain ATCC BAA-1116 / BB120) | hisC VIBHAR_01832 | Detail |
| Q3AD52 | HIS81_CARHZ | Carboxydothermus hydrogenoformans (strain ATCC BAA-161 / DSM 6008 / Z-2901) | hisC1 CHY_1086 | Detail |
| Q9PBC6 | HIS8_XYLFA | Xylella fastidiosa (strain 9a5c) | hisC XF_2218 | Detail |
| Q8ZFX6 | HIS8_YERPE | Yersinia pestis | hisC YPO1547 y2622 YP_1436 | Detail |
| Q31I36 | HIS81_HYDCU | Hydrogenovibrio crunogenus (strain XCL-2) (Thiomicrospira crunogena) | hisC1 Tcr_0591 | Detail |
| A4TKK4 | HIS8_YERPP | Yersinia pestis (strain Pestoides F) | hisC YPDSF_1429 | Detail |
| Q609W4 | HIS81_METCA | Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath) | hisC1 hisC-1 MCA1113 | Detail |
| A0QHI1 | HIS8_MYCA1 | Mycobacterium avium (strain 104) | hisC MAV_3186 | Detail |
| Q3SK85 | HIS81_THIDA | Thiobacillus denitrificans (strain ATCC 25259) | hisC1 Tbd_0952 | Detail |