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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Δ12-fatty acid desaturase is involved in growth at low temperature in yeast Yarrowia lipolytica.
Biochemical and Biophysical Research Communications 2017 June 18
We investigated the role of FAD2, which was predicted to encode a fatty acid desaturase of the n-alkane-assimilating yeast Yarrowia lipolytica. Northern blot analysis suggested that FAD2 transcription was upregulated at low temperature or in the presence of n-alkanes or oleic acid. The FAD2 deletion mutant grew as well as the wild-type strain on glucose, n-alkanes, or oleic acid at 30 °C, but grew at a slower rate at 12 °C, when compared to the wild-type strain. The growth of the FAD2 deletion mutant at 12 °C was restored by the addition of 18:2, but not 18:1, fatty acids. The amount of 18:2 fatty acid in the wild-type strain was increased by the incubation at 12 °C and in the presence of n-octadecane. In contrast, 18:2 fatty acid was not detected in the deletion mutant of FAD2, confirming that FAD2 encodes the Δ12-fatty acid desaturase. These results suggest that Δ12-fatty acid desaturase is involved in the growth of Y. lipolytica at low temperature.
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