A peptide is a naturally occurring chemical compound consisting of two or more amino acids joined together by peptide bonds. Peptide bonds form through a condensation reaction where the carboxyl group or C-terminus of one amino acid reacts with the amino group or N-terminus of another amino acid, resulting in the release of a water molecule. These bonds, known as CO-NH bonds, create peptide molecules, commonly referred to as amide molecules. It is worth noting that peptide bonds are a type of amide bond.
The term “peptide” originates from the Greek word “πέσσειν,” which means “to digest.” Peptides play a fundamental role in nature and biochemistry, with thousands of naturally occurring peptides found in humans and animals. Furthermore, ongoing laboratory research continues to uncover and synthesize new peptides. The exploration and advancement in peptide studies hold tremendous potential for the future, particularly in the fields of health and pharmaceutical development.