ISPG_THETH 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase 406 Converts 2C-methyl-D-erythritol 2,4-cyclodiphosphate (ME-2,4cPP) into 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate. ispG MEGMRRPTPTVYVGRVPIGGAHPIAVQSMTNTPTRDVEATTAQVLELHRAGSEIVRLTVNDEEAAKAVPEIKRRLLAEGVEVPLVGDFHFNGHLLLRKYPKMAEALDKFRINPGTLGRGRHKDEHFAEMIRIAMDLGKPVRIGANWGSLDPALLTELMDRNASRPEPKSAHEVVLEALVESAVRAYEAALEMGLGEDKLVLSAKVSKARDLVWVYRELARRTQAPLHLGLTEAGMGVKGIVASAAALAPLLLEGIGDTIRVSLTPSPKEPRTKEVEVAQEILQALGLRAFAPEVTSCPGCGRTTSTFFQELAEEVSRRLKERLPEWRARYPGVEELKVAVMGCVVNGPGESKHAHIGISLPGAGEEPKAPVYADGKLLTILKGEGIAEEFLRLVEDYVKTRFAPKA 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate synthase gcpE