Enables activin binding activity and inhibin binding activity. Involved in adrenal gland development; positive regulation of follicle-stimulating hormone secretion; and response to organic substance. Predicted to be located in cell surface and cytoplasm. Predicted to be part of activin receptor complex and inhibin-betaglycan-ActRII complex. Predicted to be active in plasma membrane. Human ortholog(s) of this gene implicated in colon cancer. Orthologous to human ACVR2A (activin A receptor type 2A). [provided by Alliance of Genome Resources, Apr 2022]