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What is the limiting substance in the biosynthesis of purines?

sophie0209

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What is the limiting substance in the biosynthesis of purines?

What is the limiting substance in the biosynthesis of purines?

a. ribose-5-phosphate
b. 5-phosphoribosyl- amine
c. formylglycinamidine ribonucleotide
d. 5-phosphoribosyl--pyrophosphate (PRPP)
e. -D-ribose-5-phosphate

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