Predicted to enable several functions, including histone methyltransferase binding activity; identical protein binding activity; and methylated histone binding activity. Predicted to be involved in cellular response to DNA damage stimulus; chromatin organization; and negative regulation of transcription by RNA polymerase II. Predicted to act upstream of or within negative regulation of transcription, DNA-templated. Predicted to be located in several cellular components, including chromocenter; chromosome; and pronucleus. Predicted to be active in pericentric heterochromatin. Predicted to colocalize with chromosome, telomeric region. Orthologous to human CBX1 (chromobox 1). [provided by Alliance of Genome Resources, Apr 2022]