Fatty Acid Desaturase 3 (FADS3) Is a Specific ∆13-Desaturase of Ruminant trans-Vaccenic Acid

Abstract : In mammalian species, the Fatty Acid Desaturase (FADS) gene cluster includes FADS1 (∆5-desaturase), FADS2 (∆6-desaturase), and a third gene member, named FADS3. According to its high degree of nucleotide sequence homology with both FADS1and FADS2, FADS3 was promptly suspected by researchers in the field to code for a new mammalian membrane-bound fatty acid desaturase. However, no catalytic activity was attributed to the FADS3 protein for a decade, until the rat FADS3 protein was shown in vitro to be able to catalyze the unexpected ∆13-desaturation of trans-vaccenic acid, producing the trans11,cis13-conjugated linoleic acid isomer. This review summarizes the recent investigations establishing the FADS3 enzyme as a reliable mammalian trans-vaccenate ∆13-desaturase in vivo and tries to identify further unresolved issues that need to be addressed.
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https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-02290477
Contributor : Catherine Cliquet <>
Submitted on : Tuesday, September 17, 2019 - 4:45:19 PM
Last modification on : Wednesday, September 18, 2019 - 1:06:14 AM

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Vincent Rioux, Philippe Legrand. Fatty Acid Desaturase 3 (FADS3) Is a Specific ∆13-Desaturase of Ruminant trans-Vaccenic Acid. Lifestyle Genomics, 2019, pp.1-7. ⟨10.1159/000502356⟩. ⟨hal-02290477⟩

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