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Urease in jack-bean (Canavalia ensiformis (L.) DC) seeds is a cytosolic protein
L. Faye, J.S. Greenwood and M.J. Chrispeels
Vol. 168, No. 4 (1986), pp. 579-585
Published by: Springer
Stable URL: http://www.jstor.org/stable/23378206
Page Count: 7
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Urease (EC 18.104.22.168) is abundantly present in the seeds of many species of Leguminosae. There is at present conflicting information in the literature about its subcellular location and status as a glycoprotein. We have made a study of the subcellular location of urease in jack-bean cotyledons using an immunocytochemical approach; in addition, we studied the biosynthesis and glycoprotein nature of the enzyme using several biochemical approaches. All the results are in agreement with the interpretation that the seed urease is not a glycoprotein, is synthesized on free polysomes, and is present in the cytosol of the storage parenchyma cells.
Planta © 1986 Springer