Journal of the Mass Spectrometry Society of Japan
一般論文
質量分析における繰り返し構造の視覚的な解析手法
向坂 真一寺本 華奈江小池 英樹
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ジャーナル フリー

60 巻 (2012) 2 号 p. 27-32

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Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is widely used for the analysis of not only biological materials but also synthetic polymers. A mass spectrum obtained by MALDI-MS was found to have peaks at equal intervals on the m/z axis. The chemical structure of many types of biological compounds contain repeating units that have exactly the same elemental composition. If these repeated peaks could be identified based on the m/z interval value, such analyses could be optimized even further from the point of view of chemical structure. In this study, we describe a system for visualizing such data that has the capability of analyzing the repeated peaks on the m/z axis. The system, mzRepeat, was developed and evaluated by applying the mass spectrum of polyethylene glycol and mycolic acid, which was obtained using a JMS-S3000 Spiral-TOFMS system. Because mzRepeat can systematically show a mass spectrum that includes different numbers of repeating units, it has the potential for use in analyzing these types of molecules.

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© 2012 日本質量分析学会
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