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Inhibition by lipoxygenase‐3 of n ‐hexanal generation in soybeans
Author(s) -
Hitoshi Takamura,
Kazuya Kitamura,
Makoto Kito
Publication year - 1991
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(91)80829-r
Subject(s) - hexanal , lipoxygenase , isozyme , linoleic acid , biochemistry , chemistry , enzyme , arachidonate 5 lipoxygenase , chromatography , arachidonic acid , fatty acid
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.