GCA_000009705.1 alr3230 definition 4-diphosphocytidyl-2C-methyl-D-erythritol kinase GCA_000009705.1 alr3883 definition 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase GCA_000009705.1 all5167 definition 4-diphosphocytidyl-2C-methyl-D-erythritol synthase