Ubiquinone - $10$ ($3$ letter code: $U10$); Formula: ${C}_{59}{H}_{90}{O}_{4}$
Quinone: any member of a class of cyclic organic compounds containing two carbonyl groups ($-C = O$), either adjacent or separated by a Vinylene group ($-CH = CH-$) in a six-membered unsaturated ring. In a few quinones, the carbonyl groups are located in different rings.
A Quinone is a class of Organic Compounds that are formally "derived from aromatic compounds (Such as Benzene or Naphthalene) by conversion of an even number of $- CH = groups$ into $-C(=O)- groups$ with any necessary rearrangement of double bonds" resulting in "a fully conjugated cyclic dione structure [1]."
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| Quinone Structure (A) |
Quinone: is a biologically active molecule; electron acceptor in electron transport chains such as those in Photosynthesis (
Plastoquinone,
Phylloquinone) &
aerobic respiration (
Ubiquinone). Phylloquinone is also known as Vitamin ${K}_1$ as it is used by animals to help form certain proteins, which are involved in blood coagulation, bone formation and other process.
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| Surface Structure (C) |
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| Surface Structure (B) |
In this Image (B) & Image (C), we see how the $Quinone$ - the small molecules shown inside the protein structure is nicely tucked inside the active site.
The Quinone structure plays an important role in theories concerning the relationship of chemical constitution to color.
