| 摘要 |
The present invention relates to a method for producing mutants of a fatty acid desaturase, the unmutagenized pre-cursor having 18-carbon chain substrate specificity, the produced mutant s having substantially increased activity towards fatty acid substrates with chains containing fewer than 18 carbons, relative to the activity of unmutagenized precursor desaturase. DNA en-coding the mutants, host cells containing the DNA, transgenic plants expressing the DNA and the desaturase enzyme produced by the method are also recited.
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