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How are the enzymes, trypsin, elastase, and chymotrypsin similar?

How are the enzymes, trypsin, elastase, and chymotrypsin similar?

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Trypsin, Elastase and Chymotrypsinare all these three are digestive enzymes called serine proteases. They digest the proteins by cleaving their peptide bond. In all these enzyme SERINE act as the nucleophilic amino acid at their active site. In this way they are similar.

They are specific for specific molecules. 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.

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