Globin
Globin
Globin (/ˈɡloʊbɪn/) is a superfamily of proteins that play key roles in the transport of oxygen in various organisms.
Etymology
The term "globin" is derived from the Latin word "globus," meaning sphere, and the Greek word "inos," meaning fiber or sinew. This is in reference to the spherical shape of the protein.
Definition
Globin is a heme-containing protein involved in binding and/or transporting oxygen. It is a major component of Hemoglobin, Myoglobin, and other oxygen-binding proteins.
Types of Globin
There are several types of globin proteins, each with a specific function and structure. These include:
- Alpha globin: One of the two types of protein chains that make up hemoglobin in red blood cells.
- Beta globin: The other type of protein chain that makes up hemoglobin.
- Gamma globin: A type of globin present in fetal hemoglobin.
- Delta globin: A minor component of adult hemoglobin.
- Myoglobin: A type of globin found in muscle tissue.
Related Terms
- Hemoglobin: A protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
- Myoglobin: An oxygen-binding protein found in muscle tissue.
- Globin fold: A common protein fold found in globins.
- Globin gene: Genes that encode for globin proteins.
See Also
External links
- Medical encyclopedia article on Globin
- Wikipedia's article - Globin
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