Main Entry: ubi·qui·none

Pronunciation: \yü-ˈbik-wə-ˌnōn, ˌyü-bi-kwi-ˈnōn\

Function: noun

: any of a group of lipid-soluble quinones that contain a long isoprenoid side chain and that function in the part of cellular respiration comprising oxidative phosphorylation as electron-carrying coenzymes in the transport of electrons from organic substrates to oxygen especially along the chain of reactions leading from the Krebs cycle ; especially : coenzyme q10