ACVR2B

Full Name: Activin A Receptor Type 2B

BACKGROUND: 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 IB) and two type II (II and IIB) 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.

Synonyms: Activin A Receptor Type 2B; Activin A Receptor, Type IIB; EC 2.7.11.30; ActR-IIB; Activin Receptor Type IIB; Activin Receptor Type-2B; EC 2.7.11; ACTRIIB; HTX4