Structures of Sugar Chains of Water-soluble Glycoproteins in Developing Castor Bean Cotyledons
نویسندگان
چکیده
منابع مشابه
Development of ribulose-1,5-diphosphate carboxylase in castor bean cotyledons.
Light was not essential for the development of ribulose-1,5-diphosphate carboxylase protein or catalytic activity in the photosynthetic cotyledons of germinating castor beans (Ricinus communis). Cotyledons developing in the dark showed higher activity than those in the light. Returning cotyledons developing in the light to darkness resulted in a significant increase in ribulose-1,5-diphosphate ...
متن کاملSugar Uptake and Translocation in the Castor Bean Seedling II. Sugar Transformations During Uptake.
During sucrose uptake by the cotyledons of castor bean seedlings excised from their endosperms, small amounts of glucose and fructose accumulate in the medium. When these hexoses were supplied separately, it was found that the rate of fructose uptake exceeded that of glucose at concentrations up to 0.5 m. Sucrose uptake exceeded that of both hexoses combined, particularly at concentrations grea...
متن کاملGlycoproteins in the matrix of glyoxysomes in endosperm of castor bean seedlings.
The matrix of glyoxysomes from endosperm of castor bean (Ricinus communis cv Hale) seedlings has been analyzed for the presence of glycosylated proteins. Glyoxysome preparations were monitored for organelle homogeneity by electron microscopy and enzyme marker activities. Glyoxysomes were essentially free of endoplasmic reticulum, mitochondria, and protein bodies. At least eight glyoxysomal matr...
متن کاملStructures of the oligosaccharide chains in swine trachea mucin glycoproteins.
The structures of large O-glycosidically linked oligosaccharides derived from swine trachea mucin glycoprotein were established. Reduced oligosaccharides released by treatment with alkaline borohydride were separated by gel filtration on Bio-Gel P-6 and the neutral oligosaccharides were isolated by chromatography on DEAE-cellulose. Eight oligosaccharides (DIa to BII), ranging in length from 8 t...
متن کاملLectins in castor bean seedlings.
The amounts of the two lectins (ricin and Ricinus communis agglutinin) in tissues of castor bean seedlings were followed during germination and early growth. For measurement, lectins in extracts were separately eluted from Sepharose columns; an antibody to the agglutinin was also used to detect the lectins by immunodiffusion. The endosperm of the dry seed contains 3.5 mg total lectin (5.6% of t...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1990
ISSN: 0002-1369
DOI: 10.1080/00021369.1990.10870472