In enzymology, a di-trans,poly-cis-decaprenylcistransferase is an enzyme that catalyzes the chemical reaction di-trans,poly-cis-decaprenyl diphosphate + isopentenyl diphosphate ⇌ {\displaystyle \rightleftharpoons } diphosphate + di-trans,poly-cis-undecaprenyl diphosphateThus, the two substrates of this enzyme are di-trans,poly-cis-decaprenyl diphosphate and isopentenyl diphosphate, whereas its two products are diphosphate and di-trans,poly-cis-undecaprenyl diphosphate. Wikipedia