Biochemistry
D-Amino Acid
A mirror-image amino acid that resists enzymatic degradation.
Definition
Most biological amino acids are the L-enantiomer. Incorporating D-amino acids into synthetic peptides slows proteolytic breakdown, extending half-life. CJC-1295 uses D-alanine to resist DPP-4 cleavage.
Related terms
Back to the full peptide glossary.