Enzymatic reactions [BR:br08201]
2. Transferase reactions
2.5 Transferring alkyl or aryl groups, other than methyl groups
2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
2.5.1.20
R03917 n Isopentenyl diphosphate <=> cis-1,4-Polyisoprene + n Diphosphate
