Decaprenylphospho-beta-D-erythro-pentofuranosid-2-ulose 2-reductase (EC 1.1.1.333 decaprenylphospho-beta-D-ribofuranose 2′-epimerase Rv3791 DprE2) is an enzyme with system name transoctacis-decaprenylphospho-beta-D-arabinofuranose:NAD+ 2-oxidoreductase.