Is predicted to encode a protein with the following domains: Chromo/chromo shadow domain; Chromo domain; Chromo (CHRromatin Organisation MOdifier) domain; and Chromo-like domain superfamily. Is an ortholog of C. elegans hpl-2. In C. elegans, hpl-2 is involved in several processes, including developmental process involved in reproduction; nematode larval development; and regulation of gene expression.