Bonding in the primary structure of a protein My textbook says: > The amino group of an amino acid reacts with the carbonyl group of another amino acid at the end of a polypeptide chain. This condensation reaction forms a peptide bond. ... The precise sequence of amino acids in a polypeptide chain is the primary structure of the protein. Later, it states that > The primary structure of a protein is established by covalent bonds ... Is the primary structure of a protein governed by covalent bonds or peptide bonds? Are peptide bonds a type of covalent bond? Any help is greatly appreciated.

Peptide bonds (also called amide bonds) are definitely covalent bonds. This is also mentioned in the first line of wikipedia entry: <