Coenzyme Q10 - Q refers to the quinone chemical group, and 10 refers to the number of isoprenyl chemical subunits in its tail.
This oil-soluble, vitamin-like substance is present in most eukaryotic cells, primarily in the mitochondria. It is a component of the electron transport chain and participates in aerobic cellular respiration, generating energy in the form of ATP. Ninety-five percent of the human body.s energy is generated this way. Therefore, those organs with the highest energy requirements.such as the heart, liver and kidney.have the highest CoQ10 concentrations.
There are three redox states of coenzyme Q10: fully oxidized (ubiquinone), semiquinone (ubisemiquinone), and fully reduced (ubiquinol). The capacity of this molecule to exist in a completely oxidized form and a completely reduced form enables it to perform its functions in the electron transport chain and as an antioxidant respectively.
. Ref: ^ Ernster, L; Dallner, G (1995). "Biochemical, physiological and medical aspects of ubiquinone function". Biochimica et Biophysica Acta 1271 (1): 195.204. PMID 7599208.
. ^ Dutton, PL; Ohnishi, T; Darrouzet, E; Leonard, MA; Sharp, RE; Cibney, BR; Daldal, F; Moser, CC (2000). "4 Coenzyme Q oxidation reduction reactions in mitochondrial electron transport". In Kagan, VE; Quinn, PJ. Coenzyme Q: Molecular mechanisms in health and disease. Boca Raton: CRC Press. pp. 65.82.
. ^ Okamoto, T; Matsuya, T; Fukunaga, Y; Kishi, T; Yamagami, T (1989). "Human serum ubiquinol-10 levels and relationship to serum lipids". International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition 59 (3): 288.92. PMID 2599795.
. ^ Aberg, F; Appelkvist, EL; Dallner, G; Ernster, L (1992). "Distribution and redox state of ubiquinones in rat and human tissues". Archives of biochemistry and biophysics 295 (2): 230.4. doi:10.1016/0003-9861(92)90511-T. PMID 1586151.
^ Shindo, Y; Witt, E; Han, D; Epstein, W; Packer, L (1994). "Enzymic and non-enzymic antioxidants in epidermis and dermis of human skin". The Journal of investigative dermatology 102 (1): 122.4. doi:10.1111/1523-1747.ep12371744. PMID 8288904.
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