The conversion of threonine to isoleucine is a five-step enzymatic pathway. The end product, isoleucine, fits into the allosteric site of the enzyme at step 1, preventing its normal function. This is an example of:
Loading ...
Correct Answer:
D. Feedback Inhibition.
When the product of an enzymeatic pathway inhibits any of the previous steps in the pathway, this is referred to as feedback inhibition. Enzyme specificity refers to the conditions appropriate for an enzyme to work. Competitive inhibition occurs when a substance occupies the active site that normally binds to the substrate involved in the reaction. The question states that isoleucine fits into the allosteric site.
Go Premium: Join over 2,000+ pre-med students
on the path to MCAT Domination. Click below.
Photo attributed to Foxypar4.
