Enables DNA binding activity. Predicted to be involved in negative regulation of astrocyte differentiation and negative regulation of gene expression. Located in cytoplasm; heterochromatin; and nuclear lumen. Is expressed in several structures, including central nervous system; early conceptus; genitourinary system; and retina. Human ortholog(s) of this gene implicated in lung cancer. Orthologous to human MBD1 (methyl-CpG binding domain protein 1). [provided by Alliance of Genome Resources, Apr 2022]