4 Oct 2009
Hope this helps.
Ubiquinones are a class of lipid-soluble benzoquinones that are involved in mitochondrial electron transport. They are found in the majority of aerobic organisms, from bacteria to mammals, hence the name “ubiquinone” (“ubiquitous quinone”). Studies in rats have shown that levels of ubiquinone and cytochrome C reductase increase adaptively during endurance exercise training. This increase occurs in red quadriceps and soleus muscle but not in white cardiac or quadriceps muscle. The increase in red muscle levels represents a positive adaptation to training. Experiments have shown that ubiquinones participate in oxidation-reduction reactions in the mitochondrial respiratory chain. They also have properties of hydrogen carriers, thus providing a coupling of proton translocation to respiration by means of a chemiosmotic mechanism.
Structurally ubiquinones are analogous to vitamin K. The basic molecule is 2,3-dimethoxy-5-methylbenzoquinone, to which are attached variable terpenoid side chains containing 1 to 10 monounsaturated trans-isoprenoid units. The 6- to 10-unit chain forms (Q-6 to Q-10) are found in animals, with Q-10 being exclusive to humans. All of the ubiquinones have been synthesized in the laboratory. Studies with deuterated analogs of Q-10 have demonstrated that Q-10 occurs in a mobile environment within the cell, physically separate from the orientational constraints of bilayer lipid chains. This suggests that the bulk of the long-chain ubiquinones are not directly involved functionally in electron transport. Q-10 may represent only a small fraction of total ubiquinone.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
I have been suffering with constint body pain that started in my back 8 years ago. It slowly but noticably started getting worse and than spreading. ...
5 answers • 13 Feb 2010
1 answer • 7 Nov 2011
When she took them she slept all day, I just found out today because now she's throwing up and not keeping anything down. She said she got sick ...
2 answers • 23 Nov 2011
Ubiquinone - am taking two antihypertensive drugs will 200mg capsules of q10 a day have any adverse?
... affectsI I had a stroke 2 years ago so keeping my blood pressure down is essential
0 answers • 1 Oct 2013
1 answer • 9 May 2014