National Institutes of Health
Ncbi: Amino Acids Are Linked by Peptide Bonds to Form Polypeptide Chains
Proteins are linear polymers formed by linking the a-carboxyl group of one amino acid to the a-amino group of another amino acid with a peptide bond. The formation of a dipeptide from two amino acids is accompanied by the loss of a water...
University of Arizona
Ua: Large Molecules Problem Set
Understandable lessons about numerous aspects about the composition, function, and interactions of proteins. Each starts with an interactive quiz and links to a tutorial.
CK-12 Foundation
Ck 12: Amino Acids and Proteins
[Free Registration/Login may be required to access all resource tools.] In this module, students investigate amino acids, peptide bonds, and proteins. They also have the opportnity to discover the effect of an enzyme on a biochemical...
Michigan State University
Michigan State University: Peptides and Proteins
If the amine and carboxylic acid functional groups in amino acids join together to form amide bonds, a chain of amino acid units, called a peptide, is formed. A simple tetrapeptide structure is shown in the following diagram. By...
Other
Virtual Chembook: Amino Acid Peptide Bonds
The formation of peptides is nothing more than the application of the amide synthesis reaction. By convention, the amide bond in the peptides should be made in the order that the amino acids are written.
Wikimedia
Wikipedia: Amide
Wikipedia entry for the chemical compound amide. Includes naming conventions, properties, reactions, and so on.