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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.
Activin is a dimer composed of two identical or very similar beta subunits. Inhibin is also a dimer wherein the first component is a beta subunit similar or identical to the beta subunit in activin. However, in contrast to activin, the second component of the inhibin dimer is a more distantly-related alpha subunit.
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.
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 ...
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]
Follistatin. Follistatin, also known as activin-bindings protein, is a protein that in humans is encoded by the FST gene. [5] [6] Follistatin is an autocrine glycoprotein that is expressed in nearly all tissues of higher animals. [6] Its primary function is the binding and bioneutralization of members of the TGF-β superfamily, with a ...
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 ...
INHBA is a subunit of both activin and inhibin, two closely related glycoproteins with opposing biological effects. Function [ edit ] The inhibin beta A subunit joins the alpha subunit to form a pituitary FSH secretion inhibitor.
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