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Activin and inhibin are two closely related protein complexes that have almost directly opposite biological effects. Identified in 1986, [1][2] activin enhances FSH biosynthesis and secretion, and participates in the regulation of the menstrual cycle. Many other functions have been found to be exerted by activin, including roles in cell ...
In the tissues activin has a strong role in cellular proliferation, thereby making follistatin the safeguard against uncontrolled cellular proliferation and also allowing it to function as an instrument of cellular differentiation. These roles are vital in tissue rebuilding and repair, and may account for follistatin's high presence in the skin.
The activin type 2 receptors belong to a larger TGF-beta receptor family and modulate signals for transforming growth factor beta ligands. These receptors are involved in a host of physiological processes including, growth , cell differentiation , homeostasis , osteogenesis , apoptosis and many other functions.
The Activin type I receptors transduce signals for a variety of members of the Transforming growth factor beta superfamily of ligands. This family of cytokines and hormones include activin, anti-Müllerian hormone (AMH), bone morphogenetic proteins (BMPs), and Nodal. They are involved in a host of physiological processes including, growth, cell ...
ACVR1. Activin A receptor, type I (ACVR1) is a protein which in humans is encoded by the ACVR1 gene; also known as ALK-2 (a ctivin receptor- l ike k inase-2). [5] ACVR1 has been linked to the 2q23-24 region of the genome. [6] This protein is important in the bone morphogenic protein (BMP) pathway which is responsible for the development and ...
Function. This gene encodes activin A type II receptor. Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta (TGF-beta) superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I (I and ...
An Activin receptor is a receptor which binds activin. These proteins are receptor-type kinases of Ser/Thr type, which have a single transmembrane domain and a specific hydrophilic Cys-rich ligand-binding domain. [1][2][3] Types include: Activin type 1 receptors. Activin type 2 receptors.
HPG regulation in males, with the inhibin/activin system playing a similar role on GnRH-producing cells. The hypothalamus is located in the brain and secretes GnRH. [1] GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis. [2]