Predicted to enable DNA-binding transcription factor binding activity; double-stranded DNA binding activity; and identical protein binding activity. Predicted to be involved in epigenetic regulation of gene expression and negative regulation of transcription by RNA polymerase II. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. Is expressed in embryo; inner ear; and otocyst. Orthologous to human CGGBP1 (CGG triplet repeat binding protein 1).