Predicted to enable methylated histone binding activity; single-stranded RNA binding activity; and ubiquitin-protein transferase activator activity. Involved in several processes, including cellular response to hydrogen peroxide; positive regulation of DNA repair; and positive regulation of collagen biosynthetic process. Predicted to be located in heterochromatin and nucleoplasm. Predicted to be part of PRC1 complex. Orthologous to human CBX8 (chromobox 8). [provided by Alliance of Genome Resources, Apr 2022]