Predicted to enable cytokine activity. Predicted to be involved in several processes, including positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway; regulation of endothelial cell proliferation; and transmembrane receptor protein serine/threonine kinase signaling pathway. Predicted to act upstream of or within osteoblast differentiation; positive regulation of gene expression; and positive regulation of transcription by RNA polymerase II. Predicted to be active in extracellular space. Human ortholog(s) of this gene implicated in hereditary hemorrhagic telangiectasia. Orthologous to human GDF2 (growth differentiation factor 2). [provided by Alliance of Genome Resources, Apr 2022]