Hemoglobin A3
Hemoglobin A3
Hemoglobin A3 (pronounced: hee-muh-gloh-bin A3), also known as HbA3, is a minor component of the Hemoglobin molecule found in red blood cells.
Etymology
The term "Hemoglobin" is derived from the Greek words "haima" meaning "blood" and "globus" meaning "sphere". The "A3" refers to the specific variant of hemoglobin.
Definition
Hemoglobin A3 is a subtype of Hemoglobin A, which is the most common type of hemoglobin found in humans. Hemoglobin A3 makes up a small percentage of the total hemoglobin in the body. It is composed of two alpha (Alpha globin) and two beta (Beta globin) chains, similar to Hemoglobin A, but differs in the arrangement of these chains.
Function
Like other types of hemoglobin, Hemoglobin A3 is responsible for carrying oxygen from the lungs to the rest of the body. It also helps in the removal of carbon dioxide, a waste product, from the body's tissues.
Related Terms
- Hemoglobin: The main protein found in red blood cells that carries oxygen throughout the body.
- Hemoglobin A: The most common type of hemoglobin in humans.
- Alpha globin: One of the two types of protein chains that make up hemoglobin.
- Beta globin: The other type of protein chain that makes up hemoglobin.
External links
- Medical encyclopedia article on Hemoglobin A3
- Wikipedia's article - Hemoglobin A3
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