A dipeptide is formed when two amino acids (in this case leucine and alanine) combine together. The -CONH- bond between the amino acid residues
is called a peptide bond
If the condensation process is repeated with one more amino-acid it will make a tripeptide, or if many amino-acids are combined the result is a polypeptide.
In each of these cases, there is an unattached amino group
) at one end as well as an unattached acid group
(-COOH) at the other end of the chain of amino acid residues. These are called the N-terminus and the C-terminus.
the peptide bond atoms.
Highlight leucine residue
Highlight alanine residue