Description:
4-hydroxy-3-methylbut-2-enyl diphosphate reductase; last, branched, step of isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) synthesis from 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate; alternative nonmevalonate (DXP) pathway for terp