Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific; I-SMAD binding activity; and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in several processes, including Mullerian duct regression; positive regulation of transcription, DNA-templated; and response to hypoxia. Predicted to be located in cytosol and nucleoplasm. Predicted to be part of heteromeric SMAD protein complex. Biomarker of pulmonary hypertension. Human ortholog(s) of this gene implicated in primary pulmonary hypertension. Orthologous to human SMAD9 (SMAD family member 9). [provided by Alliance of Genome Resources, Apr 2022]