>sp|B1XCS2|ISPF_ECODH 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase OS=Escherichia coli GN=ispF MRIGHGFDVHAFGGEGPIIIGGVRIPYEKGLLAHSDGDVALHALTDALLGAAALGDIGKL FPDTDPAFKGADSRELLREAWRRIQAKGYTLGNVDVTIIAQAPKMLPHIPQMRVFIAEDL GCHMDDVNVKATTTEKLGFTGRGEGIACEAVALLIKATK