Enables enzyme binding activity. Predicted to be involved in negative regulation of DNA-templated transcription and regulation of transcription by RNA polymerase II. Predicted to be located in cytosol and nucleoplasm. Predicted to be part of histone deacetylase complex and transcription regulator complex. Is expressed in several structures, including central nervous system; eye; genitourinary system; limb; and liver. Orthologous to human RCOR3 (REST corepressor 3).