The initial reaction of the de novo synthesis pathway for pyrimidine nucleotides begins with glutamine and CO2 and is complete with the formation of uridine monophosphate. Which of the following represents the rate-limiting enzyme in this pathway?
A) aspartate transcarbamoylase
B) orotate monophosphate decarboxylase
C) phosphoribosylpyrophosphate amido transferase
D) PRPP synthetase
E) ribonucleotide reductase
Correct Answer:
Verified
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