Then you isolate these fragments and you conduct admin degradation on each one of these fragments and you find out that the first fragment is glycine tryptophan, arginine. The second fragment is tyrosine, lysine, and the third fragment is aspartate and serene. Now you take that same polypeptide and now you expose it to a different proteolytic enzyme, in this case, Chimetrypsin. Now, Chimotrypsin cleaves our peptide at the carboxyl end of the bulky and aromatic amino acids. For example, tyrosine, phenylalanine and tryptophan, as well as methionine and leucine. Now you get three fragments as well.