Immunohistochemical staining (Formalin-fixed paraffin-embedded sections) of human skeletal muscle with ACVR1 polyclonal antibody (Cat # PAB30412) shows strong cytoplasmic positivity in myocytes at 1:20-1:50 dilution.
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. This gene encodes activin A type I receptor which signals a particular transcriptional response in concert with activin type II receptors. Mutations in this gene are associated with fibrodysplasia ossificans progressive. [provided by RefSeq
TGF-B superfamily receptor type I,activin A receptor, type II-like kinase 2,activin A type I receptor,hydroxyalkyl-protein kinase,serine/threonine-protein kinase receptor R1