| Q5WEP5 | HEM3_BACSK | Bacillus clausii (strain KSM-K16) | hemC ABC2630 | Detail |
| Q7W785 | HEM3_BORPA | Bordetella parapertussis (strain 12822 / ATCC BAA-587 / NCTC 13253) | hemC BPP2642 | Detail |
| Q2YLM5 | HEM3_BRUA2 | Brucella abortus (strain 2308) | hemC BAB1_1887 | Detail |
| Q97MU4 | HEM3_CLOAB | Clostridium acetobutylicum (strain ATCC 824 / DSM 792 / JCM 1419 / LMG 5710 / VKM B-1787) | hemC CA_C0097 | Detail |
| Q1GXA1 | HEM3_METFK | Methylobacillus flagellatus (strain KT / ATCC 51484 / DSM 6875) | hemC Mfla_0035 | Detail |
| A0LN73 | HEM3_SYNFM | Syntrophobacter fumaroxidans (strain DSM 10017 / MPOB) | hemC Sfum_3202 | Detail |
| A5CDH4 | HEM3_ORITB | Orientia tsutsugamushi (strain Boryong) (Rickettsia tsutsugamushi) | hemC OTBS_0843 | Detail |
| A6Q7Y4 | HEM3_SULNB | Sulfurovum sp. (strain NBC37-1) | hemC SUN_0634 | Detail |
| P22907 | HEM3_MOUSE | Mus musculus (Mouse) | Hmbs Uros1 | Detail |
| Q9Z9C9 | HEM3_CHLPN | Chlamydia pneumoniae (Chlamydophila pneumoniae) | hemC CPn_0052 CP_0723 CpB0053 | Detail |