Peptide Research Glossary: Essential Terms

A comprehensive reference of terms commonly used in peptide research. Amino Acid The building blocks of peptides and proteins. There are 20 standard amino acids used in biological systems. Acetylation The addition of an acetyl group (-COCH3) to the N-terminus of a peptide, often used to increase stability. Amidation The conversion of the C-terminal carboxyl group to an amide, which can increase peptide activity and stability. Bacteriostatic Water Sterile water containing a small amount of benzyl alcohol as a preservative, commonly used for reconstituting peptides. COA (Certificate of Authenticity) Documentation verifying the identity, purity, and quality of a peptide batch. Cyclization The process of forming a ring structure within a peptide, often increasing stability and bioactivity. Dalton (Da) The unit of molecular mass used to express peptide weight. One Dalton equals one atomic mass unit. Endotoxin A component of gram-negative bacterial cell walls that can contamina