Multiple Choice
Several cysteines play important roles in the mechanism of E.coli ribonucleotide reductase.Which is NOT a role carried out by cysteine in this enzyme?
A) donation of a hydrogen atom to the substrate
B) removal of a hydrogen atom from the substrate
C) donation of a proton to ultimately form water
D) reduction of thioredoxin
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Contrast the source of the nitrogen required
Q4: The activity site of ribonucleotide reductase can
Q5: Two biosynthesis steps are necessary to incorporate
Q6: Consider the breakdown of the four compounds
Q7: To determine the role of glutaredoxin in
Q9: Analysis of enzyme activities in a cell
Q10: Glutamine-PRPP amidotransferase is a tetrameric enzyme that
Q11: Analysis of AMP and GMP synthesized in
Q12: The transformation of ribose-5-phosphate to AIR in
Q13: The nitrogen atoms of a purine originate