Enzymes ee biosynthesis acid dufanka ah waxaa loo qaybiyaa laba kooxood: in xayawaanka iyo fangaska, dhammaan falcelinta synthase acid dufanka waxaa lagu fuliyaa by hal protein nooca multifunctional I, halka in plastids dhirta iyo bakteeriyada kala duwan enzymes nooca II qabtaan tallaabo kasta oo wadada.Terpenes iyo isoprenoids waa lipoprene weyn oo carotenoids iyo class ugu weyn ee xeryahooda dabiiciga ah dhirta.
daawada loo yaqaan'lanosterol '