The latent ampholytic nature of glycosaminoglycan (GAG) oligosaccharides facilitates their separation by isoelectric focusing
The latent ampholytic nature of glycosaminoglycan (GAG) oligosaccharides facilitates their separation by isoelectric focusing
复制标题
糖胺聚糖 (GAG) 寡糖的潜在两性本质有利于通过等电聚焦进行分离
DOI:
10.1039/c0ay00340a
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发表时间:
2010
影响因子:
3.1
通讯作者:
Holman J
中科院分区:
文献类型:
--
作者:
Holman J
Glycosaminoglycans are medically and biologically important polysaccharides. Glycosaminoglycan oligosaccharides are of increasing pharmaceutical relevance but, oligosaccharides from two in particular, heparan sulfate and heparin, are difficult to separate owing to their structural complexity. This hinders further progress because it is difficult to obtain pure saccharides in sufficient quantities. The ampholytic nature of heparin and heparan sulfate is realised by reversible de-N-sulfation or de-N-acetylation to reveal free amine groups, providing an opportunity to separate them using isoelectric focusing. Ampholytic heparan sulfate and heparin saccharides are characterised by low pI values, and isoelectric focusing required bespoke polyacrylamide gels capable of supporting pH gradients below pH 2. Representative oligosaccharide pools from heparin and chemically modified heparin, which had been fractionated previously to the best current levels by high performance anion exchange chromatography and gel permeation chromatography, were further separated and focused. The isoelectric focusing method provides an additional separation dimension for glycosaminoglycan oligosaccharides and has implications for the future development of related semi-preparative techniques.
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影响因子:
3.1
作者:
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通讯作者:
B. Casu*
DOI:
10.1016/0006-291x(74)90958-9
发表时间:
1974
影响因子:
3.1
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