Docosanoids belong to the fatty acyls. Their structure is based on docosanoic acid, a twenty-two carbon atoms long hydrocarbon chain with a carboxyl group. Typically, docosanoids contain multiple double bonds.
Docosanoids are found in all animals and some microalgae and fungi, but do not commonly accumulate in higher plants. In cells, they are often linked to phospholipids to be released on demand or in free form. The configuration of the hydrocarbon chain greatly impacts biological function. Both, oxidized docosahexaenoic acids and oxidized docosapentaenoic acids are linked to cognitive and neural health.
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