Several Cysteines Play Important Roles in the Mechanism of E

question 8

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

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