Predicted to enable activin binding activity and activin receptor activity. Predicted to be involved in activin receptor signaling pathway; cellular response to growth factor stimulus; and pattern specification process. Predicted to act upstream of or within cell surface receptor protein serine/threonine kinase signaling pathway. Predicted to be located in membrane. Predicted to be part of activin receptor complex. Predicted to be active in plasma membrane. Human ortholog(s) of this gene implicated in Lynch syndrome and colon cancer. Orthologous to human ACVR2A (activin A receptor type 2A).