Dipeptide
Dipeptide — The simplest peptide consisting of exactly two amino acid residues joined by a single peptide bond.
What Is a Dipeptide?
A dipeptide is a peptide consisting of exactly two amino acid residues joined by a single peptide bond. Despite their small size, several dipeptides have significant biological activity and research applications. Dipeptides are the smallest molecules that can be classified as peptides and represent the fundamental unit of peptide bond chemistry.
Bioactive Dipeptides
- Carnosine (beta-Ala-His): Endogenous dipeptide antioxidant and pH buffer in muscle tissue. Contains a non-standard beta-alanine
- Anserine (beta-Ala-1-MeHis): Methylated carnosine found in skeletal muscle of birds and fish
- Pro-Hyp: Most abundant collagen digestion product. Detected in blood after oral collagen intake
- Aspartame (Asp-Phe-OMe): Artificial sweetener, technically a dipeptide methyl ester
Frequently Asked Questions
What is Dipeptide?
The simplest peptide consisting of exactly two amino acid residues joined by a single peptide bond.
Why is Dipeptide important in peptide research?
Dipeptide is a fundamental concept in structure as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.