EOG85XBBF GO:0008299 4/12 isoprenoid biosynthetic process biological_process "The chemical reactions and pathways resulting in the formation of any isoprenoid compound, isoprene (2-methylbuta-1,3-diene) or compounds containing or derived from linked isoprene (3-methyl-2-butenylene) residues." [ISBN:0198506732] EOG85XBBF GO:0003824 3/12 catalytic activity molecular_function "Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic." [ISBN:0198506732] EOG85XBBF GO:0050518 1/12 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase activity molecular_function "Catalysis of the reaction: 2-C-methyl-D-erythritol 4-phosphate + CTP = 4-CDP-2-C-methyl-D-erythritol + diphosphate." [EC:2.7.7.60, RHEA:13432]