Enables transforming growth factor beta binding activity. Involved in regulation of transforming growth factor beta3 activation and secondary palate development. Acts upstream of or within negative regulation of activated T cell proliferation; negative regulation of cytokine production; and positive regulation of gene expression. Predicted to be located in cell surface and nucleoplasm. Predicted to be active in extracellular matrix and extracellular space. Is expressed in several structures, including genitourinary system; lung; sensory organ; skeletal muscle; and skin. Orthologous to human LRRC32 (leucine rich repeat containing 32). [provided by Alliance of Genome Resources, Apr 2022]