Peptide Bonds
Part of the Food Chemistry and the Lab section of Coddy's Chemistry journey. Lesson 10 of 27.
COOH of one amino acid + NH₂ of the next gives a peptide bond, C(=O)-NH, and water. It is an amide group.
The peptide bond is an amide group, C(=O)-N
A protein has hundreds of peptide bonds, a free NH₂ at one end and a free COOH at the other.
Digestion hydrolyzes the peptide bonds back into amino acids.
Challenge
Two glycine molecules have joined into a dipeptide. Mark every functional group in it.
Try it yourself
Work it out on the board
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.