Predicted to enable protein heterodimerization activity. Acts upstream of or within SMAD protein signal transduction. Predicted to be located in membrane. Predicted to be integral component of membrane. Is expressed in central nervous system; dorsal root ganglion; genitourinary system; and thymus primordium. Orthologous to human BTBD11 (BTB domain containing 11). [provided by Alliance of Genome Resources, Apr 2022]