Myoglobin contains a heme protein.
Myoglobin (Mb) is a protein found mainly in the sarcoplasm of skeletal and cardiac muscle. This protein contains iron, and this is due to the presence of a heme moiety, which allows myoglobin to function as a carrier and storage unit for oxygen within muscle cells.
Components of Myoglobin
- Heme Group: The heme group is the core structure responsible for oxygen binding. It includes an iron atom which is central to the molecule.
- Protein: The protein part helps to form a pocket around the heme, supporting the binding and protection of the iron and oxygen.
Function of Myoglobin
- Oxygen Storage: Primarily functions as an oxygen storage unit, especially during periods of high demand.
- Oxygen Carrier: Facilitates the movement of oxygen inside muscle cells.
Key Properties
- Iron-Containing: Myoglobin has iron, due to the heme group, which is essential for oxygen binding.
- Muscle Protein: Located in the sarcoplasm of muscle cells, specifically skeletal and cardiac muscle cells.
| Property | Description |
|---|---|
| Protein Type | Heme protein |
| Primary Location | Sarcoplasm of skeletal and cardiac muscle |
| Function | Oxygen carrier and storage |
| Key Component | Heme (iron-containing) |
