Plant Physiol. Illumina
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Plant Physiology 66:1037-1043 (1980)
© 1980 American Society of Plant Biologists

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Electrophoretic Comparison of Polypeptides from Enriched Plasma Membrane Fractions from Developing Soybean Roots 1

Martha L. Booz and Robert L. Travis

Department of Agronomy and Range Science, University of California, Davis, California 95616

The polypeptide complement of enriched soybean (Glycine max [L.] Merr. cult. wells) root plasma membrane fractions was studied by two-dimensional gel electrophoresis. Good resolution was obtained when polypeptides were solubilized in sodium dodecyl sulfate and when butylated hydroxytoluene was included in the vesicle isolation and solubilization media. The pattern obtained on the two-dimensional slab gel for root plasma membrane was characteristic for that membrane. The polypeptide complements from mitochondrial membranes and from enriched fractions of three other endomembrane components were solubilized and electrophoresed for comparison. Each membrane preparation was identifiable on the basis of its characteristic electrophoretogram. Electrophoresis of protein solubilized from plasma membrane fractions isolated from meristematic and mature root tissue revealed both qualitative and quantitative differences in the respective protein complements.

1 This work was supported in part by a fellowship (to M. L. B.) from the Association for Women in Science.






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Copyright © 1980 by the American Society of Plant Biologists