| A5G6I6 | HIS3_GEOUR | Geobacter uraniireducens (strain Rf4) (Geobacter uraniumreducens) | hisI Gura_3243 | Detail |
| B0T5D0 | HIS3_CAUSK | Caulobacter sp. (strain K31) | hisI Caul_0351 | Detail |
| Q57D60 | HIS3_BRUAB | Brucella abortus biovar 1 (strain 9-941) | hisI BruAb1_1081 | Detail |
| Q6GHI8 | LYTN_STAAR | Staphylococcus aureus (strain MRSA252) | lytN SAR1223 | Detail |
| Q2K853 | HIS3_RHIEC | Rhizobium etli (strain CFN 42 / ATCC 51251) | hisI RHE_CH02202 | Detail |
| P60544 | HIS3_RHOPA | Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009) | hisI his3 RPA3390 | Detail |
| Q134L8 | HIS3_RHOPS | Rhodopseudomonas palustris (strain BisB5) | hisI RPD_3247 | Detail |
| Q8KF68 | HIS3_CHLTE | Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS) (Chlorobium tepidum) | hisI CT0463 | Detail |
| C6E0X3 | HIS3_GEOSM | Geobacter sp. (strain M21) | hisI GM21_0739 | Detail |
| Q9K6Z7 | HIS2_BACHD | Bacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125) | hisI hisIE BH3577 | Detail |