Predicted to enable several functions, including DNA-binding transcription repressor activity, RNA polymerase II-specific; I-SMAD binding activity; and enzyme binding activity. Involved in Mullerian duct regression and ossification. Predicted to be located in cytosol and nucleoplasm. Predicted to be part of heteromeric SMAD protein complex. Orthologous to human SMAD5 (SMAD family member 5). [provided by Alliance of Genome Resources, Apr 2022]