Polyasparagine is a term used in biochemistry to describe a polypeptide with several Asn (asparagine) residues. Asparagine is one of the 20 amino acids commonly found in proteins. Some synonyms for polyasparagine include: - Asn-rich polypeptide: This term describes a polypeptide with a high proportion of asparagine residues. It may be used to refer to specific proteins or protein domains. - N-glycan: Asparagine residues are often involved in the formation of N-linked glycans, which are carbohydrate chains attached to proteins. Thus, polyasparagine sequences may be referred to as N-glycans or high-mannose N-glycans. - ASN-repeat: In some contexts, polyasparagine may be called an "ASN-repeat" sequence, indicating the repetition of Asn residues.