Predicted to enable several functions, including ATP binding activity; activin binding activity; and transmembrane receptor protein serine/threonine kinase activity. Involved in several processes, including regulation of endothelial cell differentiation; regulation of endothelial cell proliferation; and vasculature development. Acts upstream of or within several processes, including angiogenesis; positive regulation of angiogenesis; and transmembrane receptor protein serine/threonine kinase signaling pathway. Predicted to be located in cell surface; dendrite; and neuronal cell body. Predicted to be integral component of plasma membrane. Predicted to be part of BMP receptor complex. Predicted to be active in plasma membrane. Is expressed in several structures, including alimentary system; central nervous system; eye; genitourinary system; and immune system. Used to study arteriovenous malformations of the brain and hereditary hemorrhagic telangiectasia. Human ortholog(s) of this gene implicated in hereditary hemorrhagic telangiectasia and pulmonary hypertension. Orthologous to human ACVRL1 (activin A receptor like type 1). [provided by Alliance of Genome Resources, Apr 2022]