Predicted to enable DNA binding activity and protein heterodimerization activity. Predicted to be a structural constituent of chromatin. Predicted to be part of nucleosome. Is an ortholog of C. elegans cpar-1 and hcp-3. In C. elegans, hcp-3 is involved in several processes, including membraneless organelle assembly; negative regulation of mitotic centrosome separation; and protein localization to chromosome.