Large-scale preparation and characterization of N-linked glycopeptides from bovine fetuin.
Large-scale preparation and characterization of N-linked glycopeptides from bovine fetuin.
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牛胎球蛋白 N-连接糖肽的大规模制备和表征。
DOI:
10.1016/0003-2697(90)90676-z
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发表时间:
1990
影响因子:
2.9
通讯作者:
Lee,YC
中科院分区:
文献类型:
--
作者:
Rice,KG;Rao,NB;Lee,YC
A preparative scheme has been developed to purify asialo-glycopeptides from each of the three N-linkage sites of bovine fetuin, allowing the isolation of 100-μmol quantities of asialo-glycopeptides from 20 g of fetuin. The procedure yields seven asialo-glycopeptides which were determined to be 95% homogenous in peptide and oligosaccharide structure. The isolation scheme uses two high-capacity reverse-phase eluant systems. The primary RP-HPLC purification performed with boric acid buffered to pH 7 with triethylamine resolved sialylated tryptic glycopeptides simultaneously on the basis of glycosylation site and degree of sialylation. A second RP-HPLC purification was performed eluting isocratically with dilute phosphoric acid which resolved residual peptide and oligosaccharide heterogeneity from asialo-glycopeptides containing short peptides. Structural characterization of the products was performed utilizing 400-MHz proton NMR spectroscopy and amino acid and monosaccharide analysis. The glycopeptides contain two previously identified variant triantennary oligosaccharides which possess either Galβ(1 → 4) or Galβ(1 → 3) linkages to N-acetylglucosamine at one terminal branch or a biantennary oligosaccharide. These compounds should prove to be invaluable in studying carbohydrate-protein interactions, such as binding by the Gal GalNAc lectin of mammalian hepatocytes, in the detailed three-dimensional structural analysis of complex oligosaccharides, and as purified substrates for the study of the action of glycoconjugate-modifying enzymes.
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影响因子:
2.7
作者:
Y. Kozutsumi;Y. Nakao;T. Teramura;T. Kawasaki;Ikuo Yamashiina;J. H. Mutsaers;H. Halbeek;J. Vliegenthart
通讯作者:
J. Vliegenthart
影响因子:
2.9
作者:
R. Lee;Y. Lee
通讯作者:
R. Lee;Y. Lee
影响因子:
3.1
作者:
E. Berman
通讯作者:
E. Berman
影响因子:
3.5
作者:
J. Paz;G. Strecker;Y. Leroy;J. Montreuil;B. Fournet;H. van Halbeek;L. Dorland;J. Vliegenthart
通讯作者:
J. Vliegenthart
影响因子:
2.9
作者:
HARDY, MR;TOWNSEND, RR;LEE, YC
通讯作者:
LEE, YC