Now, the question is, how do we determine what the correct order is? Now, before we look at that, let's take a look at the following chart or table. What the table basically tells us is it gives us some of these examples of these chemicals or biological enzymes that are capable of cleaving our peptides at specific amino acid sequences. For example, we have a special molecule, a chemical known as Cygn bromide. And what it does is it cleaves our peptide at the carboxyl side of methionine amino acids. For trypsin.