ACVR2A

This gene encodes a receptor that mediates the functions of activins, which are members of the transforming growth factor-beta (TGF-beta) superfamily involved in diverse biological processes. The encoded protein is a transmembrane serine-threonine kinase receptor which mediates signaling by forming heterodimeric complexes with various combinations of type I and type II receptors and ligands in a cell-specific manner. The encoded type II receptor is primarily involved in ligand-binding and includes an extracellular ligand-binding domain, a transmembrane domain and a cytoplasmic serine-threonine kinase domain. This gene may be associated with susceptibility to preeclampsia, a pregnancy-related disease which can result in maternal and fetal morbidity and mortality. Alternative splicing results in multiple transcript variants of this gene.

Full Name

ACTIVIN A RECEPTOR TYPE 2A

Function

On ligand binding, forms a receptor complex consisting of two type II and two type I transmembrane serine/threonine kinases. Type II receptors phosphorylate and activate type I receptors which autophosphorylate, then bind and activate SMAD transcriptional regulators. Receptor for activin A, activin B and inhibin A. Mediates induction of adipogenesis by GDF6 (By similarity).

Biological Process

Activin receptor signaling pathway
Anterior/posterior pattern specification
BMP signaling pathway
Cellular response to BMP stimulus
Cellular response to growth factor stimulus
Determination of left/right symmetry
Embryonic skeletal system development
Gastrulation with mouth forming second
Mesoderm development
Negative regulation of BMP signaling pathway
Penile erection
Positive regulation of activin receptor signaling pathway
Positive regulation of BMP signaling pathway
Positive regulation of bone mineralization
Positive regulation of erythrocyte differentiation
Positive regulation of osteoblast differentiation
Positive regulation of pathway-restricted SMAD protein phosphorylation
Positive regulation of protein phosphorylation
Positive regulation of transcription by RNA polymerase II
Protein phosphorylation
Regulation of nitric-oxide synthase activity
Sertoli cell proliferation
Spermatogenesis
Sperm ejaculation
Transmembrane receptor protein serine/threonine kinase signaling pathway

Cellular Location

Membrane

Topology

Extracellular: 20-135 aa
Helical: 136-161 aa
Cytoplasmic: 162-513 aa