Enzyme Nomenclature. Recommendations
EC 1.17.4.1 ribonucleoside-diphosphate reductase
EC 1.17.4.2 ribonucleoside-triphosphate reductase (thioredoxin)
EC 1.17.4.3 transferred now EC 1.17.7.1
EC 1.17.4.4 vitamin-K-epoxide reductase (warfarin-sensitive)
EC 1.17.4.5 vitamin-K-epoxide reductase (warfarin-insensitive)