The 3-D Structure of an Enzyme Composed of a Single

question 59

Multiple Choice

The 3-D structure of an enzyme composed of a single polypeptide chain includes a large substrate-binding domain. It also has a separate binding site for a regulatory molecule. Based on these structural observations the enzyme is most likely regulated by which of the following mechanism?

• A) noncompetitive inhibition
• B) competitive activation
• C) competitive inhibition
• D) cooperativity

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