need help Chymotrypsin, trypsin, and elastase are digestive enzymes called serin

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Chymotrypsin, trypsin, and elastase are digestive enzymes called serine proteases. The serine proteases differ in substrate specificity: Chymotrypsin cleaves peptide bonds after aromatic or bulky hydrophobic side chains; trypsin requires basic amino acid residues; and elastase cleaves bonds following small uncharged side chains. A chart of amino acids can be found here. The specificity pockets (substrate-binding sites) of each of the serine proteases are drawn below. Determine which specificity pocket is a part of each enzyme. Move each specificity pocket, below, to the proper bin. Note: If you answer part (a) incorrectly, a single red X will appear indicating that one or more of the answers are sorted incorrectly. (b) Which of the following amino acids have side chains that fit into the specificity pocket of elastase? Select all the amino acids that fit. You will need to check more than one amino acid. glycine alanine aspartate arginine tyrosine lysine

Explanation / Answer

Elastase cleaves peptide bonds after amino acids with small side chains, such as glycine, alanine, or valine. The specificity pocket for elastase has bulky side chains that block larger amino acid side chains, but can accomodate smaller side chains, such as the

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