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Digitale Medien

Host-plant oligosaccharins in the honeydew ofSchizaphis graminum (Rondani) (Insecta, Aphididae) (1986)

Campbell, B. C.

Springer

Cellular and molecular life sciences 42 (1986), S. 451-452

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ISSN: 1420-9071

Schlagwort(e): Aphids ; honeydew ; phloem ; pectin ; pectinase ; polysaccharase ; cell wall ; translocation ; phytoalexin

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary The honeydew of the aphidSchizaphis graminum (Rondani) contains hetero-oligosaccharides (mol. wt〉2200 D) having neutral sugar and uronic acid compositions similar to the pectic substances of the host plant,Sorghum biocolor (L.) Moench. These oligosaccharides are pectic fragments which result from the depolymerization of pectic substances in the phloem by aphid salivary polysaccharases.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02118654

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Digitale Medien

High performance gel filtration using monodisperse highly cross-linked agarose as a one-step system for mucin purification (1993)

Parker, N. ; Finnie, I. A. ; Raouf, A. H. ; [weitere]

New York, NY : Wiley-Blackwell

Biomedical Chromatography 7 (1993), S. 68-74

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ISSN: 0269-3879

Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Medizin

Notizen: High performance gel filtration on monodisperse cross-linked agarose (Superose 6) has been assessed as a system for purification of mucus glycoproteins. Comparison with the conventional two-step purification of mucus glycoprotein by Sepharose CL4B gel filtration followed by caesium chloride density gradient centrifugation shows that purification by high performance gel filtration is at least as thorough, yielding mucin that is free from non-mucin glycoproteins as defined by buoyant density, mobility on sodium dodecyl sulphate-polyacrylamide gel electrophoresis and absence of Concanavalin A binding (mannose-containing) material. This technique allows mucus glycoprotein to be purified from lyophilized crude mucin in 120 min compared with approximately 72 h using the conventional techniques. This makes the comparative study of mucus glycoprotein changes in disease states much more feasible.

Zusätzliches Material: 8 Ill.