The gm-fad2-1 is a fragment of the omega-6 desaturase gene 1
(FAD2-1) from Glycine max (soybean) that corresponds to
approximately 40% of the middle portion of the coding region of
FAD2-1 (597 bp).
gm-fad2-1 itself does not code for a functional protein, but
transcription of this gene fragment transgenic soybean seeds acts
to suppress transcription of endogenous omega-6 desaturase,
resulting in the high oleic phenotype.