Fluorescence fingerprints and Cu2+-complexing ability of individual molecular size fractions in soil- and waste-borne DOM

Chemosphere ◽  
2007 ◽  
Vol 69 (4) ◽  
pp. 540-548 ◽  
Author(s):  
K. Knoth de Zarruk ◽  
G. Scholer ◽  
Y. Dudal
Keyword(s):  
Molecular Size ◽  
Size Fractions ◽  
Complexing Ability

scholarly journals Structural studies on sialylated and sulphated O-glycosidic mannose-linked oligosaccharides in the chondroitin sulphate proteoglycan of brain

1987 ◽  
Vol 245 (1) ◽  
pp. 229-234 ◽  
Author(s):  
T Krusius ◽  
V N Reinhold ◽  
R K Margolis ◽  
R U Margolis
Keyword(s):  
Ion Exchange ◽  
Chondroitin Sulphate ◽  
Gel Filtration ◽  
Molecular Size ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Keratan Sulphate ◽  
Size Fractions ◽  
Sulphate Proteoglycan ◽  
Chondroitin Sulphate Proteoglycan

We have previously described the structures of neutral and sialylated O-glycosidic mannose-linked tetrasaccharides and keratan sulphate polysaccharide chains in the chondroitin sulphate proteoglycan of brain. The present paper provides information on a series of related sialylated and/or sulphated tri- to penta-saccharides released by alkaline-borohydride treatment of the proteoglycan glycopeptides. The oligosaccharides were fractionated by ion-exchange chromatography and gel filtration, and their structural properties were studied by methylation analysis and fast-atom-bombardment mass spectrometry. Five fractions containing [35S]sulphate-labelled oligosaccharides were obtained by ion-exchange chromatography, each of which was eluted from Sephadex G-50 as two well-separated peaks. The apparent Mr values of both the large- and small-molecular-size fractions increased with increasing acidity (and sulphate labelling) of the oligosaccharides. The larger-molecular-size fractions contained short mannose-linked keratan sulphate chains of Mr 3000-4500, together with some asparagine-linked oligosaccharides. The smaller tri- to penta-saccharides, of Mr 800-1400, appear to have a common GlcNac(beta 1-3)Manol core, and to contain one to two residues of sialic acid and/or sulphate.

Isotherm and kinetic studies on the adsorption of humic acid molecular size fractions onto clay minerals

2019 ◽  
Vol 38 (6) ◽  
pp. 863-871 ◽  
Author(s):  
Mohamed E. A. El-Sayed ◽  
Moustafa M. R. Khalaf ◽  
James A. Rice
Keyword(s):  
Humic Acid ◽  
Clay Minerals ◽  
Molecular Size ◽  
Kinetic Studies ◽  
Size Fractions

Effect of heparin molecular-size fractions on the inhibition of proteinases by antithrombin III

1983 ◽  
Vol 11 (1) ◽  
pp. 97-98 ◽  
Author(s):  
WILLIAM F. LONG ◽  
FRANK B. WILLIAMSON ◽  
NANCY E. WOODHEAD
Keyword(s):  
Antithrombin Iii ◽  
Molecular Size ◽  
Size Fractions
Sign in / Sign up

Export Citation Format

Share Document