This gene encodes activin A type II receptor. Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I and two type II receptors. These receptors are all transmembrane proteins, composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic domain with predicted serine/threonine specificity. Type I receptors are essential for signaling, and type II receptors are required for binding ligands and for expression of type I receptors. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. Type II receptors are considered to be constitutively active kinases.
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Protein Aliases: activin A receptor type IIA; activin A receptor, type IIA; activin receptor IIA; Activin receptor type IIA; Activin receptor type-2A; ACTR-IIA; type II activin receptor
Gene Aliases: ACTRII; ActrIIa; ACVR2; ACVR2A; rActR-II; TactrII