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| Isoaspartic Acid Isoaspartate | beta-Aspartate | beta-Aspartic Acid | beta Aspartate | beta Aspartic Acid An ASPARTIC ACID residue in polypeptide chains that is linked at the beta-carboxyl group instead of at the normal, alpha-carboxyl group, polypeptide linkage. It is a result of the spontaneous decomposition of aspartic acid or ASPARAGINE residues. |