NCIt definition : A protein family comprised of chromo and chromo shadow domain-containing, methyl-lysine
binding proteins that are localized to heterochromatin. These proteins are involved
in gene silencing, transcriptional activation, and the formation and stabilization
of heterochromatin.;
NCIt note : The members of this family include chromobox protein homolog 1, chromobox protein
homolog 3 and chromobox protein homolog 5.;