Predicted to enable transforming growth factor beta binding activity. Predicted to be involved in several processes, including negative regulation of CD4-positive, alpha-beta T cell proliferation; regulation of transmembrane receptor protein serine/threonine kinase signaling pathway; and transforming growth factor beta receptor signaling pathway. Predicted to act upstream of or within several processes, including animal organ development; negative regulation of osteoblast differentiation; and regulation of BMP signaling pathway. Predicted to be active in extracellular space. Orthologous to human TWSG1 (twisted gastrulation BMP signaling modulator 1). [provided by Alliance of Genome Resources, Apr 2022]