YZ51, a novel potent inhibitor of ribonucleotidereductase (RR), inhibits hepatitis B virus replication by targeting ribonucleotidereductase M2 protein.
Fludarabine triphosphate (F-ara-ATP), the cytotoxic metabolite of Fludarabine phosphate , inhibits ribonucleotidereductase and DNA polymerase and ultimately leads to cellular apoptosis.