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 (yo͞o′bĭ-kwĭ-nōn′, -kwĭn′ōn′)
Any of a family of fat-soluble quinone compounds that are found in the membranes of eukaryotic cells, especially in mitochondria, and serve as electron carriers in cellular respiration and other processes. Also called coenzyme Q.

[Blend of ubiquitous (from its widespread distribution) and quinone.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) another name for coenzyme Q
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ubiquinone - any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respiration
biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry
coenzyme - a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes
benzoquinone, quinone - any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Taking COQ10, either a 100mg dose in ubiquinol form or 200mg in ubiquinone form, may help to overcome this side effect,' says Dr Brewer.
membranaceus root extract, ubiquinone, tocopherol, spilanthes
Ari Whitten's book Red Light Therapy contains the revelation that the well-researched, yet relatively little known, Red/Near Infrared (NIR) light therapy reduces oxidized ubiquinone (aka CoQ10) in the mitochondria to ubiquinol.
The ubiquinone form of CoQ10 was used in this study.
Greenamyre, [3H] dihydrorotenone binding to NADH: ubiquinone reductase (complex I) of the electron transport chain: an autoradiographic study, J.
Ubiquinol Preferred Over Ubiquinone -- Global Sales to Surpass US$ 800 Mn by 2028-end End-users are showing a marked preference for ubiquinol, and it is likely that over the forecast period, value sales of ubiquinol are likely to outgrow those of ubiquinone.
The enzyme coenzyme Q[sub]10 monooxygenase 6 (COQ6) is an evolutionarily conserved flavin-dependent monooxygenase that is required for the biosynthesis of coenzyme Q[sub]10 (CoQ[sub]10, also referred to as ubiquinone) and is thought to catalyze one or more ring hydroxylation steps.
The serum is a result of 15 year of cooperation in Kyto IP, a biotechnology company which secured a number of patents related to Vitamin B12 and Ubiquinone CO-Q-10 and which, together with the State University of New York (SUNY), has been instrumental in the discovery of the human vitamin B12 receptor - a milestone in the annals of human biology.
Glyphosate is a broadspectrum herbicide that acts by inhibiting biosynthesis of aromatic aminoacids in plants (tryptophan, phenylalanine and tyrosine) by inhibiting the enzyme 5enolpiruvilshikimato-3-phosphates synthetize (EPSPS), which reduces the production of protein and its development, reduces biosynthesis of other compounds such as tetrahydrofolate, ubiquinone and vitamin K (Salazar-Lopez & Aldana-Madrid, 2011).
is an antioxidant, ubiquinone, and patients with statin-associated muscle symptoms are ubiquinone depleted.