Predicted to enable PDZ domain binding activity. Predicted to act upstream of or within negative regulation of BMP signaling pathway. Predicted to be located in extracellular region and membrane. Predicted to be integral component of membrane. Is expressed in several structures, including central nervous system; genitourinary system; heart; integumental system; and sensory organ. Orthologous to human CRIM1 (cysteine rich transmembrane BMP regulator 1). [provided by Alliance of Genome Resources, Apr 2022]