Passage: The unconditioned biosynthesis of lycopene in eukaryotic plants and in prokaryotic cyanobacteria is similar, as are the enzymes involved. Synthesis starts with mevalonic acid, which is converted into dimethylallyl pyrophosphate. Hii kisha condensed with three molecules of isopentenyl pyrophosphate (an isomer of dimethylallyl pyrophosphate), to give the 20-carbon geranylgeranyl pyrophosphate. Molekuli mbili za bidhaa hii ni kisha condensed in a tail-to-tail configuration to give the 40-carbon phytoene, the first step in carotenoid biosynthesis. Kupitia desaturation kadhaa, phytoene inageuzwa kuwa lycopene.
asidi ya mevaloni