Decaprenylphospho-beta-D-erythro-pentofuranosid-2-ulose 2-reductase (, decaprenylphospho-beta-D-ribofuranose 2'-epimerase, Rv3791, DprE2) is an enzyme with systematic name trans,octacis-decaprenylphospho-beta-D-arabinofuranose:NAD<sup>+</sup> 2-oxidoreductase. This enzyme catalyses the following chemical reaction
The reaction is catalysed in the reverse direction.