Enables DNA-binding transcription repressor activity, RNA polymerase II-specific; RNA polymerase II-specific DNA-binding transcription factor binding activity; and sequence-specific DNA binding activity. Involved in several processes, including negative regulation of cellular biosynthetic process; negative regulation of dense core granule biogenesis; and response to ischemia. Located in chromatin and nucleus. Part of transcription repressor complex. Human ortholog(s) of this gene implicated in autosomal dominant nonsyndromic deafness 27; gingival fibromatosis 5; and nephroblastoma. Orthologous to human REST (RE1 silencing transcription factor). [provided by Alliance of Genome Resources, Apr 2022]