| A3CNT1 | HIS4_STRSV | Streptococcus sanguinis (strain SK36) | hisA SSA_1443 | Detail |
| A5GKX4 | HIS4_SYNPW | Synechococcus sp. (strain WH7803) | hisA SynWH7803_1163 | Detail |
| A8ZUC6 | HIS4_DESOH | Desulfococcus oleovorans (strain DSM 6200 / Hxd3) | hisA Dole_2154 | Detail |
| Q2FN18 | HIS4_METHJ | Methanospirillum hungatei JF-1 (strain ATCC 27890 / DSM 864 / NBRC 100397 / JF-1) | hisA Mhun_0921 | Detail |
| C1DJD2 | HIS4_AZOVD | Azotobacter vinelandii (strain DJ / ATCC BAA-1303) | hisA Avin_04620 | Detail |
| A3CTR9 | HIS4_METMJ | Methanoculleus marisnigri (strain ATCC 35101 / DSM 1498 / JR1) | hisA Memar_0836 | Detail |
| A1VEV5 | HIS4_DESVV | Desulfovibrio vulgaris subsp. vulgaris (strain DP4) | hisA Dvul_1955 | Detail |
| B7UT61 | HIS4_ECO27 | Escherichia coli O127:H6 (strain E2348/69 / EPEC) | hisA E2348C_2165 | Detail |
| Q9S5G4 | HIS4_ECO57 | Escherichia coli O157:H7 | hisA Z3186 ECs2825 | Detail |
| B5YU80 | HIS4_ECO5E | Escherichia coli O157:H7 (strain EC4115 / EHEC) | hisA ECH74115_2957 | Detail |