Enzymatic Ribonucleotide Reduction Is Accomplished Via a Free Radical Mechanism

question 12

Multiple Choice

Enzymatic ribonucleotide reduction is accomplished via a free radical mechanism.Which of the following statements regarding this process is correct?

• A)The substrate specificity site on the R1 homodimer determines if the enzyme is active or inactive.
• B)R2 has a single active site containing 2 Fe atoms that generate the free radicals.
• C)R2,but not R1,functions in the delivery of reducing equivalents.
• D)R2 homodimer carries 2 regulatory sites.

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