The active (catalytic) site of an enzyme contains the side chains of amino acid residues that areconserved because they participate in the protein’s catalytic activity. The bulk of the enzyme,however, is not part of the active site. A substantial amount of energy is required to synthesizeenzymes. Why are these molecules so large?

Q: Why does the specificity of the enzyme promote enzyme activity?

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Q: The active site of an enzyme binds specifically to a substrate. Your text mentions an early idea…

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Q: Why is concentration of an enzyme in a cell is much lower than that of its substrate?

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Q: Consider the three-dimensional model of the tertiary structure of an enzyme below. Amino acids…

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Q: Protein X can be covalently modified with many methyl groups. What two general properties would be…

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Q: What happens to the enzyme’s native conformation once it is denatured? What structural organization…

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Q: Figure 1. Enzyme and potential substrates

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Q: Lactase is an enzyme that is responsible for hydrolyzing the covalent bond that holds galactose and…

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Q: Discuss how enzyme, together with its cofactors/ coenzymes, interact with its substrate. How do…

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Q: Since KM is an intrinsic property of an enzyme, its value does not depend on the enzyme…

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Q: How can an enzyme produce a chiral product from a nonchiral or prochiral substrate?

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Q: The gene that encodes the enzyme amylase is 750 nucleotides long. The number of amino acids that the…

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Q: When the enzyme hexokinase binds to glucose and ATP it undergoes a conformational change. All of the…

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Q: Within an enzyme active site, how does the aspartate carboxyl group activate the histidine nitrogen…

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Q: What would be the result of an enzyme having a greater binding energy for the substrate than for the…

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Q: Why must enzyme activity be monitored under standard conditions?

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Q: The active site of an enzyme contains sequences that are conserved because they participate in the…

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Q: Why are most enzymes larger than the substrates on which they act?

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Q: A very special property of enzymes is Feedback inhibition. What is feedback inhibition? Draw a…

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