Single-Molecule Fluorescence Detection of a Synthetic Heparan Sulfate Disaccharide.

Single-Molecule Fluorescence Detection of a Synthetic Heparan Sulfate Disaccharide.
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DOI:
10.1002/cphc.201600750
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发表时间:
2016-11-04
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
通讯作者:
Magennis SW
Magennis SW
中科院分区:
其他
文献类型:
--
作者:
Dalton CE;Quinn SD;Rafferty A;Morten MJ;Gardiner JM;Magennis SW

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报道了结构确定的合成碳水化合物的第一个单分子荧光检测:用Alexa 488标记的硫酸乙酰肝素(HS)二糖片段。在溶液中自由扩散的同时测量了单个分子,并且在表面束缚的脂质囊泡中的受控包封允许将碳水化合物分子的观察扩展到单分子水平。HS-蛋白质相互作用的多样性和动态性意味着在分子水平上研究纯HS片段的新工具将显着提高我们对HS的理解。这项工作是对合成碳水化合物的单分子研究的可行性的原理证明,为纯糖胺聚糖(GAG)片段的研究提供了一种新方法。
The first single‐molecule fluorescence detection of a structurally‐defined synthetic carbohydrate is reported: a heparan sulfate (HS) disaccharide fragment labeled with Alexa488. Single molecules have been measured whilst freely diffusing in solution and controlled encapsulation in surface‐tethered lipid vesicles has allowed extended observations of carbohydrate molecules down to the single‐molecule level. The diverse and dynamic nature of HS–protein interactions means that new tools to investigate pure HS fragments at the molecular level would significantly enhance our understanding of HS. This work is a proof‐of‐principle demonstration of the feasibility of single‐molecule studies of synthetic carbohydrates which offers a new approach to the study of pure glycosaminoglycan (GAG) fragments.
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