Ubiquinone

Ubiquinone also known as coenzyme Q or simply CoQ, is a 1,4-benzoquinone, where Q refers to the quinone chemical group and 10 refers to the number of isoprenyl chemical subunits in its tail.

Structure

Ubiquinone is a fat-soluble substance resembling a vitamin. Its structure includes a quinone group, which is a ring of six carbon atoms with two oxygen atoms, and a tail of 10 isoprene units. The quinone group is responsible for the molecule's ability to accept and donate electrons.

Function

Ubiquinone is a vital participant in the electron transport chain, where it accepts electrons from complexes I and II. It then transfers these electrons to complex III, contributing to the formation of a proton gradient across the mitochondrial membrane. This gradient is used by ATP synthase to generate ATP, the main energy currency of the cell.

Role in human health

Ubiquinone has been studied for its potential role in treating various health conditions. It is a powerful antioxidant, protecting cells from damage by free radicals. It also plays a role in maintaining heart health, and some studies suggest it may help with neurological disorders.

Dietary sources

Ubiquinone is found in a variety of foods, including meat, fish, and whole grains. It can also be synthesized in the body.

See also

• Coenzyme Q10
• Mitochondrion
• Oxidative phosphorylation

Ubiquinone Resources
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