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Preparation and characterization of monoclonal antibodies against soybean seed lipoxygenase isoenzymes


Preparation and characterization of monoclonal antibodies against soybean seed lipoxygenase isoenzymes



Archives of Biochemistry and Biophysics 288(2): 578-583



ISSN/ISBN: 0003-9861

PMID: 1910311

DOI: 10.1016/0003-9861(91)90239-f

Sets of monoclonal antibodies have been prepared using two soybean seed lipoxygenase isoenzymes as the antigens. The antibodies were characterized by ELISA, Western blot analysis, immunoprecipitation, and in kinetic assays. Several antibodies displaying selectivity for the two closely related polypeptides were obtained, while the majority of the antibodies generated were crossreactive. Antibodies specific to the native and denatured forms of the two proteins were also obtained. Two of the monospecific antibodies were shown to immunoprecipitate the appropriate isoenzyme selectively from a mixture. When thee antibodies were immobilized on agarose, they were successful in the immunoaffinity purification of the individual isoenzymes. In kinetic experiments certain antibodies were found to influence catalysis upon incubation with lipoxygenase. Antibodies which both inhibited and stimulated catalysis were identified.

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Accession: 007680814

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