Structural maintenance of chromosomes flexible hinge domain-containing protein 1 (SMCHD1)

Required for maintenance of X inactivation in females and hypermethylation of CpG islands associated with inactive X. Involved in a pathway that mediates the methylation of a subset of CpG islands gradually and requires the methyltransferase DNMT3B (By similarity).

Required for DUX4 silencing in somatic cells (PubMed:23143600). .