Enables chromatin binding activity. Involved in negative regulation of peptidyl-lysine crotonylation; random inactivation of X chromosome; and spermatid development. Located in chromosome; cytoplasm; and nucleus. Is expressed in 2-cell stage embryo and 4-cell stage embryo. Used to study epilepsy. Orthologous to several human genes including CDYL (chromodomain Y like). [provided by Alliance of Genome Resources, Apr 2022]