Problem

CTP synthetase catalyzes the glutamine-dependent conversion of UTP to CTP. The enzyme is a...

CTP synthetase catalyzes the glutamine-dependent conversion of UTP to CTP. The enzyme is allosterically inhibited by the product, CTP. Mammalian cells defective in this allosteric inhibition are found to have a complex phenotype: They require thymidine in the growth medium, they have unbalanced nucleotide pools, and they have a mutator phenotype. Explain the basis for these observations.

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Solutions For Problems in Chapter 19