11-Arachidonate-lipoxygenase mutants

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase

Reexamination Certificate

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C435S440000, C435S252300, C435S320100, C435S069100, C435S071100, C536S023200, C536S023600

Reexamination Certificate

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10030464

ABSTRACT:
A method for producing a plant lipoxygenase (LOX) with modified positional specificity toward arachidonic acid and its use for hydroperoxylation of arachidonic acid. The LOX makes it possible to produce for the first time (11S,14Z,12E,8Z,5Z)-11-hydroperoxy-14,12,8,5-eicosatetraenic acids on a large scale. To this end, arachidonic acid is incubated as substrate with the LOX under appropriate conditions. Hydroperoxylation of the arachidonic acid is then effected, preferably at position 11, with secondary products which are hydroperoxylated at position 8, at position 5, or at positions 11 and 8 and 5.

REFERENCES:
patent: WO 00/60093 (2000-10-01), None
Gan et al. Defining the arachidonic acid binding site of human 15-lipoxygenase. Molecular modeling and mutagenesis. J Biol Chem. Oct. 11, 1996;271(41):25412-8.
Geerts et al. Expression of lipoxygenase in wounded tubers ofSolanum tuberosumL. Plant Physiol. May, 1994;105(1):269-77.
Sequence Alignment.
ExPASy: lipoxygenase
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