Omega hydroxy acid

Omega hydroxy acid

Omega hydroxy acids (also known as ω-hydroxy acids) are a class of naturally occurring straight-chain aliphatic organic acids n carbon atoms long with a carboxyl group at position 1 and a hydroxyl at position n. The C16 and C18 omega hydroxy acids 16-hydroxy palmitic acid and 18-hydroxy stearic acid are key monomers of cutin in the plant cuticle.[1][2] The polymer cutin is formed by inter-esterification of omega hydroxy acids and derivatives of them that are substituted in mid-chain, such as 10,16-dihydroxy palmitic acid.[3][4] Only the epidermal cells of plants synthesize cutin.[5]

References

  1. ^ P. E. Kolattukudy, T. J. Walton (1972) Structure and biosynthesis of the hydroxy fatty acids of cutin in Vicia faba leaves. Biochemistry. 11,(10),1897–1907
  2. ^ C. L. Soliday and P. E. Kolattukudy (1977) Biosynthesis of Cutin ω-hydroxylation of fatty acids by a microsomal preparation from germinating Vicia faba. Plant Physiology 59,(6), 1116–1121.
  3. ^ T.J. Walton TJ and P.E. Kolattukudy (1972) Enzymatic conversion of 16-hydroxypalmitic acid into 10,16-dihydroxypalmitic acid in Vicia faba epidermal extracts. Biochem Biophys Res Communications 46, (1), 16–21
  4. ^ P. J. Holloway (1982) The chemical constitution of plant cutins. p45-85 in In "The Plant Cuticle". ed. by DF Cutler, KL Alvin and CE Price. Academic Press, London. ISBN 0-12-199920-3
  5. ^ Kolattukudy, PE (1996) Biosynthetic pathways of cutin and waxes, and their sensitivity to environmental stresses. In: Plant Cuticles. Ed. by G. Kerstiens, BIOS Scientific publishers Ltd., Oxford, pp 83-108
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