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Biology, 24.03.2020 01:28 scholar13

Pyrimidines are synthesized through a long series of reactions beginning with the amino acid aspartate. The ribonucleotide CTP is one of the final compounds in this reaction pathway, and when the cell has enough CTP, it binds to and inhibits the enzyme that catalyzes the first reaction in the pathway, aspartate transcarbamoylase (ATCase). This is most likely an example of:

A. Copmetitive inhibition
B. Allosteric acivation
C. Allosteric inhibition
D. Direct feedback inhibition
E. End-product inhibition
F. Both allosteric inhibition
G. Both competiteve inhibition

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