Positive control: Rat brain lysate.
The TGF-beta superfamily of ligands exerts its biological activity by binding to heteromeric receptor complexes two types (I and II) of the serine/threonine kinases. ALK1, like the other type I receptors, contains a cysteine rich domain with conserved cysteine spacing in the extracellular region and a glycine and serine rich domain preceding the kinase domain. The reduced human ALK1 monomer has a calculated molecular mass of approximately 37.3 kDa. Due to glycoslyation, the recombinant human protein migrates as a 50-55 kDa protein in SDS-PAGE under reducing conditions. Human and mouse ALK1 share approximately 71% amino acid sequence identity in their extracellular domains. ALK1 is highly expressed in endothelial cells and other vascular tissues.
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Protein Aliases: activin A receptor type 1; activin A receptor, type I; Activin receptor type I; Activin receptor type-1; Type I TGF B receptor
Gene Aliases: ACVR1; ALK2
Entrez Gene ID: (Chicken) 395246