Tritrans,polycis-undecaprenyl-diphosphate synthase (geranylgeranyl-diphosphate specific)

 is an enzyme with systematic name  (adding 7 isopentenyl units). This enzyme catalyses the following chemical reaction


 * geranylgeranyl diphosphate + 7 isopentenyl diphosphate $$\rightleftharpoons$$ 7 diphosphate + tritrans,heptacis-undecaprenyl diphosphate

This enzyme is involved in the biosynthesis of the glycosyl carrier lipid in some archaebacteria.