Abstract
A gene coding the α subunit of fatty acid synthase (FAS2) was isolated from the budding yeast Saccharomyces kluyveri. Nucleotide sequence analysis indicated that this gene, termed Sk-FAS2, coded a protein having an amino acid sequence 83% identical to the FAS2 protein of S. cerevisiae (Sc-FAS2). The Sk-FAS2 gene was able to functionally complement an S. cerevisiae fas2 disruptant. This Sk-FAS2-expressing strain was found to produce larger amounts of C18 than C16, in contrast to the Sc-FAS2-expressing fas2 strain. In addition, fusion genes of Sk-FAS2 and Sc-FAS2 were transformed into a fas2-disrupted strain of S. cerevisiae, and fatty acid analysis of these transformants suggested that the region containing the acyl carrier protein and β-ketoacyl reductase domains of yeast FAS2 protein play an important role in determining carbon chain length of fatty acids.
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Acknowledgements
This work was financed by Grants for Young Scientists (no. 10760045 and no. 13760061) from the Japan Society for the Promotion of Science.
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Communicated by S. Hohmann
GenBank Submission: The nucleotide sequences reported in this paper have been submitted to GenBank Nucleotide Sequence Database under the accession number AB115969.
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Oura, T., Kajiwara, S. Cloning and functional characterization of a fatty acid synthase component FAS2 gene from Saccharomyces kluyveri . Curr Genet 49, 393–402 (2006). https://doi.org/10.1007/s00294-006-0063-4
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DOI: https://doi.org/10.1007/s00294-006-0063-4