Predicted to enable transcription corepressor activity and ubiquitin protein ligase activity. Predicted to be involved in protein polyubiquitination and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within negative regulation of transcription by RNA polymerase II. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. Is expressed in eye. Orthologous to human IRF2BP1 (interferon regulatory factor 2 binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]