User:Benjah-bmm27/degree/3/SM
Metalloproteins
See also
The roles of metals in biology
Proteins: transport and storage (Fe, Cu)
- Oxygen transport
- Myoglobin (Fe)
- Haemoglobin (Fe)
- Haemocyanin (Cu)
- Electron transport
- Cytochrome c
- Ferredoxins (FeS redox centre)
- Copper blues
Enzymes: catalysis
- Redox (Fe, Cu, Mo)
- Nitrogenase (Fe, Mo, V) — converts N2 to NH3 at room temperature and atmospheric pressure
- Hydrogenase (Fe, Ni) — converts H2 to H−
- Superoxide dismutase (Fe, Cu, Mn) — converts a by-product of many biochemical reactions, superoxide, O2− to OH− and H2O
Non-proteins
Transport/storage
- Siderophores (Fe) — peptide-based macrocycles secreted by bacteria into the environment to scavenge Fe and bring it back to the cell
- Electrolytes: Na, K
- Lewis acids: Mg, Zn
- Skeletal (bone, teeth): Ca
Haem metalloproteins in electron transfer — cytochrome c
Haem metalloproteins in enzyme catalysis — cytochrome P450
- Cytochrome P450
- PDB-101 Structural View of Biology – Cytochrome p450
- PDB 1W0E – Human Cytochrome P450 3A4
- Cytochrome P450 bound to its substrate, camphor: PDB 3L63