Table 1.
Heme Types in Hemoproteins and Their Function
| Type of heme | Function of hemoprotein | Hemoprotein |
|---|---|---|
| Heme a | Multiheme enzyme | Cytochrome c oxidase (subunit) |
| Heme b | Electron transfer | Cytochrome b562 |
| Gas transportation/storage | Hemoglobin | |
| Gas transportation/storage and binding of small molecules | Myoglobin | |
| Binding of small molecules | CO-sensing proteins | |
| Enzyme | Cytochrome c peroxidase | |
| Enzyme | Catalase I | |
| Enzyme | Cytochrome P450 | |
| Mitochondrial cytochrome c | ||
| Heme d1 | Enzyme | Cytochrome cd1 nitrite reductase |
| Heme P460 | Multiheme enzyme (c+P460) | Hydroxylamine oxidoreductase |
| SiroHeme | Enzyme | Sulfite reductase |
| Unusual heme | Enzyme | Myeloperoxidase |