If an Alteration Occurred in the Activity Site of the R1

question 70

Multiple Choice

If an alteration occurred in the activity site of the R1 subunit of E.coli ribonucleotide reductase that allowed dATP to bind but precluded ATP binding to the site,a possible result would be that ribonucleotide reductase

• A) would remain active under all conditions.
• B) would be decreased when dATP bound both the activity and specificity sites.
• C) activity would be increased when ATP bound the specificity site.
• D) activity would be decreased when dCDP bound the catalytic site.

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