Enables growth factor activity. Predicted to be involved in SMAD protein signal transduction and positive regulation of pathway-restricted SMAD protein phosphorylation. Predicted to act upstream of or within positive regulation of transcription by RNA polymerase II. Located in extracellular space and vesicle. Orthologous to human BMP3 (bone morphogenetic protein 3). [provided by Alliance of Genome Resources, Apr 2022]