Yours, Etc.: Origins and Uses of 8 Sign-Offs
ubiquinone u·bi·qui·none (yōō'bĭ-kwĭ-nōn', yōō-bĭk'wə-nōn')
A quinone compound that serves as an electron carrier between various flavoproteins and in cellular respiration.
any of several members of a series of organic compounds belonging to a class called quinones. Widely distributed in plants, animals, and microorganisms, ubiquinones function in conjunction with enzymes in cellular respiration (i.e., oxidation-reduction processes). The naturally occurring ubiquinones differ from each other only slightly in chemical structure, depending on the source, the structures resembling those of the fat-soluble vitamin K and certain derivatives of vitamin E.