Deoxycytidine diphosphate is synthesized through the oxidation-reduction reaction of cytidine 5'-diphosphocholine which is catalyzed by the presence of ribonucleoside-diphosphate reductase.2 Additionally, ribonucleoside-diphosphate reductase is capable of binding and catalyzing both the formation of deoxyribonucleotides from ribonucleotide.3
MeSH term, accessed Dec. 31, 2012 https://www.nlm.nih.gov/cgi/mesh/2007/MB_cgi?mode=&index=108353 ↩
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