Plant Physiol. Illumina
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Plant Physiology 43:1656-1660 (1968)
© 1968 American Society of Plant Biologists

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Articles

Effect of N-tris (Hydroxymethyl) Methylglycine and N-2-Hydroxyethyl-piperazine-N'-2-Ethanesulfonic Acid Buffers on Linolenic Acid as a Substrate for Flaxseed Lipoxidase

Don C. Zimmerman1

Department of Biochemistry, North Dakota State University, Fargo, North Dakota 58102

The delay in, or loss of, flaxseed lipoxidase activity in N-tris (hydroxymethyl) methylglycine and N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid buffers with linolenic acid as a substrate appears due to an alteration of the lipid micelle. Flaxseed lipoxidase activity is dependent on the ionic strength of the assay solution. These effects are not observed with linoleic acid as substrate. The influence of these 2 buffers on linolenic acid micelles may have a direct bearing on recent reports of chloroplast structure and activity in these buffers.

1 Research Chemist, Crops Research Division, Agricultural Research Service, United States Department of Agriculture, in cooperation with the North Dakota Agricultural Experiment Station. Published with the approval of the Director, North Dakota Agricultural Experiment Station as Journal article No. 159.






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ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1968 by the American Society of Plant Biologists