Multiple Choice
Which of the following catalyzes the given reaction involving a triglyceride?
19. Enzymes
Enzyme Classification
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Identify the class and subclass of an enzyme that catalyzes the following reaction.
A
Lyase, Hydratase
B
Hydrolase, Protease
C
Lyase, Dehydratase
D
Hydrolase, Nuclease
Verified step by step guidance1
Examine the chemical reaction depicted in the image. Notice that a water molecule (H2O) is a reactant, and the reaction results in the cleavage of a bond in the substrate molecule.
Identify the type of bond being cleaved. In this case, the bond between two amino acids in a peptide chain is broken, which is characteristic of peptide bond hydrolysis.
Recognize that the addition of water to break a bond is a hallmark of hydrolytic reactions. Enzymes that catalyze such reactions are classified as hydrolases.
Determine the specific subclass of hydrolase. Since the reaction involves breaking a peptide bond, the enzyme is specifically a protease, which is a subclass of hydrolases that acts on proteins.
Conclude that the enzyme class is Hydrolase, and the subclass is Protease, based on the reaction involving the hydrolysis of a peptide bond.
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