Transcriptional regulator that binds CpG, CpNpN and CpNpG (N is A, T, or C) islands in promoters regardless the DNA methylation status. Plays probably a role in gene silencing. Expressed in rosette leaves, buds, flowers, stems, mature seeds and roots. The methyl-CpG-binding domain (MBD) functions both in binding to methylated DNA and in protein interactions.