Cell wall proteins from sugar beet cells in suspension culture
1989
Masuda, H. | Komiyama, S. | Sugawara, S.
Several proteins were extracted from the purified cell walls of suspension-cultured sugar beet cells with 0.5% EDTA (pH 6.8) after prior extraction of the walls with 0.5% deoxycholate and then with 2 molar NaCl. Two abundant proteins (P-I and P-II protein) were separately purified to homogeneity by procedures that included fractionation with ammonium sulfate, column chromatography on DEAE-cellulose and butyl Toyopearl, and preparative polacrylamide electrophoresis. P-I exists as a dimer of identical subunits, and P-II is composed of four different subunits. Analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed that quite different polypeptides are present in the culture medium and in the NaCl and EDTA extracts of the wall.
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