Decaprenylphospho-beta-D-ribofuranose 2-oxidase (, decaprenylphosphoryl-beta-D-ribofuranose 2'-epimerase, Rv3790, DprE1) is an enzyme with systematic name trans,octacis-decaprenylphospho-beta-D-ribofuranose:FAD 2-oxidoreductase. This enzyme catalyses the following chemical reaction
This enzyme from the bacterium Mycobacterium smegmatis participates in epimerization of trans,octacis-decaprenylphospho-beta-D-ribofuranose to trans,octacis-decaprenylphospho-beta-D-arabinoofuranose.