Heterochromatin Protein 1

**Semantic type:** Amino Acid, Peptide, or Protein

**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.

**Synonyms:** - HP1 - Heterochromatin Protein-1