Which Statement Is TRUE Regarding Class I Ribonucleotide Reductase?
A) $\beta$

Which statement is TRUE regarding Class I ribonucleotide reductase?

A) The $\beta$ subunit contains the regulatory sites for the enzyme.
B) The $\alpha$ subunit contains the active site cysteines.
C) The $\alpha$ subunit contains the binuclear iron center.
D) This enzyme catalyzes a hydrolysis reaction.
E) ATP is an inhibitor for most isoforms of this enzyme.