Activin
Activin (pronounced /ækˈtɪvɪn/) is a complex protein involved in various biological processes. It is a member of the TGF-beta superfamily, which includes other growth and differentiation factors.
Etymology
The term "Activin" is derived from the word "active", referring to its role in the activation of various biological processes. The suffix "-in" is commonly used in the naming of proteins.
Function
Activin plays a crucial role in the regulation of cell proliferation, differentiation, and apoptosis. It is also involved in the regulation of the immune system, wound healing, and the production of FSH in the pituitary gland.
Types
There are several types of Activin, including Activin A, Activin B, and Activin AB. Each type is composed of two different or identical dimeric protein subunits, known as inhibin beta subunits.
Related Terms
- Inhibin: A protein that inhibits the release of FSH, and is structurally related to Activin.
- Follistatin: A protein that binds to and inhibits Activin.
- Smad: A family of proteins that are intracellular mediators of TGF-beta superfamily signals, including Activin.
See Also
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