1 - University of Arizona

- regulation of pyrimidine biosynthesis occurs at carbamoyl phosphate synthetase II ( feedback inhibition by uridine nucleotides (UDP, UTP) - PRPP in excess (PRPP, ATP)( enzyme stimulated - to maintain balance of purine and pyrimidine nucleotides ( high amounts of purine nucleotides activate carbamoyl phosphate synthetase II. 3. ................
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