Different reactions catalyzed by UbiA superfamily prenyltransferases (A–G). Unique chemical groups are colored in red and cleavage reactions are indicated by arrows. Abbreviations: HGA, homogentisic acid; PPP, phytyl diphosphate; GGPP, geranylgeranyl diphosphate; pRpp, phosphoribose diphosphate; DP, decaprenyl phosphate; DPPR, decaprenylphosphoryl-5-phosphoribose, GGGP, geranylgeranylglyceryl phosphate; DGGGP, digeranylgeranylglycerylphosphate.