Hemoprotein
Hemoprotein
Hemoprotein (pronounced: hee-mo-pro-tein) is a type of protein that contains a heme group, a complex molecule with an iron atom at its center. Hemoproteins are vital for various biological functions, including oxygen transport, energy production, and detoxification.
Etymology
The term "hemoprotein" is derived from the Greek word "haima" meaning "blood" and the English word "protein". This is because many hemoproteins, such as hemoglobin and myoglobin, are found in the blood and are responsible for oxygen transport.
Types of Hemoproteins
There are several types of hemoproteins, each with a unique function. These include:
- Hemoglobin: This is the most well-known hemoprotein. It is found in red blood cells and is responsible for transporting oxygen from the lungs to the rest of the body.
- Myoglobin: This hemoprotein is found in muscle cells and stores oxygen for when it is needed during physical activity.
- Cytochromes: These are involved in the electron transport chain, a process that produces energy in cells.
- Catalase: This hemoprotein helps to detoxify the body by breaking down hydrogen peroxide, a harmful byproduct of metabolism.
Related Terms
- Heme: The complex molecule that is bound to the protein in hemoproteins.
- Protein: Large, complex molecules that play many critical roles in the body.
- Iron: A mineral that is a key component of hemoproteins.
- Oxygen: A gas that is transported by hemoproteins in the body.
External links
- Medical encyclopedia article on Hemoprotein
- Wikipedia's article - Hemoprotein
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