Enables BMP binding activity; heparin binding activity; and identical protein binding activity. Involved in several processes, including determination of dorsal identity; embryonic body morphogenesis; and regulation of signal transduction. Located in extracellular space. Is expressed in several structures, including chondrocranium; integument; intestine smooth muscle circular layer; lung; and neural tube. Human ortholog(s) of this gene implicated in tooth agenesis. Orthologous to human GREM2 (gremlin 2, DAN family BMP antagonist). [provided by Alliance of Genome Resources, Apr 2022]