Post-source Decay Analysis of Novel Heterogeneous Sugar Branched Cyclodextrins by Using Matrix-assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (プロテオミクス特集号)

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概要

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• Novel heterogeneous cyclodextrin (CyD) compounds of 6-O-(4-O-α-D-glucuronyl-α-D-glucosyl)cyclomaltoheptaose (GlcU-Glc-βCyD) and 6-O-(N-acetyl-β-D-glucosaminyl)cyclomaltoheptaose (GlcNAc-βCyD) were analyzed by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Since the branch sugar residues of these heterogeneous CyDs had different molecular weights from those of glucose residues, the product ions generated from the branch or CyD part could be distinguished by their PSD spectra. In the PSD spectrum of GlcU-Glc-βCyD, the product ions, [M - Glc3~5 + Na] + , [M - GlcU + Na] + , and [M - GlcU - Glc1~5 + Na] +, were observed. The chemical species of [M - Glc3~5 + Na] + was generated by the two-site cleavage of the glycosyl linkages in the CyD part without cleavage of the branch. In the PSD spectrum of GlcNAc-βCD, [M - Glc1~5 + Na] + , and [M - GlcNAc - Glc1~4 + Na] + ions were observed.

• 日本質量分析学会の論文
• 2003-10-01

著者

• HASHIMOTO Hitoshi

  Bio Research Corporation of Yokohama

• YAMAGAKI Tohru

  Department of Biochemistry, Saitama University

• Hamayasu Ken-ichi

  Bio Research Corporation Of Yokohama

• NAKANISHI Hiroshi

  Biological Information Research Center, National Institute of Advanced Industrial Science and Techno

• Nakanishi Hiroshi

  Biological Information Research Center National Institute Of Advanced Industrial Science And Technology

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