Inhibition by lipoxygenase-3 of n-hexanal generation in soybeans.
Soybean seeds contain three lipoxygenase isozymes. The functions of these lipoxygenase isozymes in n-hexanal generation were investigated by using mutant lines which lack two or three isozymes. In the presence of linoleic acid, the level of n-hexanal produced was highest in the lipoxygenase-1, -3 double deficient line, followed by the lipoxygenase-2, -3 double deficient, wild type, and lipoxygenase-1, -2, -3 triple deficient lines in that order, and lowest in the lipoxygenase-1, -2 double deficient line. This suggests that lipoxygenase-3 itself cannot produce the n-hexanal precursor and inhibits the n-hexanal generation through other pathways.
Takamura
H
H
Research Institute for Food Science, Kyoto University, Japan.
Kitamura
K
K
Kito
M
M
D000447:Aldehydes / Q000037:antagonists & inhibitors / Q000378:metabolism*; D004591:Electrophoresis, Polyacrylamide Gel; D007527:Isoenzymes / Q000378:metabolism*; D019787:Linoleic Acid; D008041:Linoleic Acids / Q000378:metabolism; D008084:Lipoxygenase / Q000378:metabolism*; D009154:Mutation; D013025:Glycine max / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*
D000447:Aldehydes; D007527:Isoenzymes; D008041:Linoleic Acids; C010463:n-hexanal; D019787:Linoleic Acid; D008084:Lipoxygenase