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Science 4 August 1967:
Vol. 157. no. 3788, pp. 556 - 557
DOI: 10.1126/science.157.3788.556
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Articles

Subcellular Structure of Endosperm Protein in High-Lysine and Normal Corn

M. J. Wolf 1, U. Khoo 1, and H. L. Seckinger 1

1 Northern Regional Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Peoria, Illinois 61604

Optical microscopy shows that the protein network in endosperm cells of normal corn is composed of an amorphous matrix in which granules averaging about 2 microns in diameter are embedded. That these granules are rich in zein is demonstrated by their solubility in 80 percent ethanol. High-lysine corn, with submicroscopic granules clearly resolved only in the electron microscope, has a much lower content of zein than normal corn. The small size of subcellular protein granules in high-lysine maize as compared with normal corn correlates with the reported difference in zein content of the two types of corn.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Gene for Improved Nutritional Value in Barley Seed Protein.
L. Munck, K. E. Karlsson, A. Hagberg, and B. O. Eggum (1970)
Science 168, 985-987
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