medium · MCAT bio-biochem
A Lineweaver-Burk plot compares an uninhibited enzyme reaction with one containing an inhibitor. The two lines intersect at the same y-intercept but have different x-intercepts.
What type of inhibition is being demonstrated, and how is the inhibitor interacting with the enzyme?
- Noncompetitive inhibition; the inhibitor binds to an allosteric site, decreasing the turnover number.
- Competitive inhibition; the inhibitor binds to the active site and can be outcompeted by high substrate concentration.
- Mixed inhibition; the inhibitor binds to both the free enzyme and the enzyme-substrate complex with different affinities.
- Uncompetitive inhibition; the inhibitor binds only to the enzyme-substrate complex.
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