| Q13E39 | HIS4_RHOPS | Rhodopseudomonas palustris (strain BisB5) | hisA RPD_0412 | Detail |
| B7K3A9 | HIS4_RIPO1 | Rippkaea orientalis (strain PCC 8801) (Cyanothece sp. (strain PCC 8801)) | hisA PCC8801_0331 | Detail |
| A7HSH1 | HIS4_PARL1 | Parvibaculum lavamentivorans (strain DS-1 / DSM 13023 / NCIMB 13966) | hisA Plav_1234 | Detail |
| A4FLL9 | HIS4_SACEN | Saccharopolyspora erythraea (strain ATCC 11635 / DSM 40517 / JCM 4748 / NBRC 13426 / NCIMB 8594 / NRRL 2338) | hisA SACE_5759 | Detail |
| B8I5V5 | HIS4_RUMCH | Ruminiclostridium cellulolyticum (strain ATCC 35319 / DSM 5812 / JCM 6584 / H10) (Clostridium cellulolyticum) | hisA Ccel_0387 | Detail |
| A7NN50 | HIS4_ROSCS | Roseiflexus castenholzii (strain DSM 13941 / HLO8) | hisA Rcas_2920 | Detail |
| Q8GJM0 | HIS4_SYNE7 | Synechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2) | hisA Synpcc7942_1829 sen0020 | Detail |
| A0LHK5 | HIS4_SYNFM | Syntrophobacter fumaroxidans (strain DSM 10017 / MPOB) | hisA Sfum_1215 | Detail |
| A0R946 | DRDI_BACAH | Bacillus thuringiensis (strain Al Hakam) | drdI BALH_0338 | Detail |
| Q1I3G7 | HIS4_PSEE4 | Pseudomonas entomophila (strain L48) | hisA PSEEN5192 | Detail |