Chernogolovka Branch of the N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Academician Semenov avenue 1/10, Chernogolovka, Moscow region, Russia, 142432.
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Academician Semenov avenue 1, Chernogolovka, Moscow region, Russia, 142432.
Anal Bioanal Chem. 2019 Sep;411(24):6409-6417. doi: 10.1007/s00216-019-02019-2. Epub 2019 Jul 16.
The work is aimed at developing a numerical method for analysing mass spectra of deutero-substituted multicharged ions of biopolymers to determine contributions of components presumably corresponding to different biomolecule conformations. The two-dimensional decomposition of the H-D exchange mass spectra of two, three and four charged apamin ions with their separation suggests that the reaction of apamin ions with ND molecules in the gas phase reveals hypothetically three different structural modifications of apamin ions. Usually for H-D exchange mass spectra, the presence of many resolvable protein structures was determined from measured distributions of peak intensities of ions with the same charge state. The method is new and has no published analogues. Graphical abstract.
这项工作旨在开发一种数值方法，用于分析生物聚合物的氘取代多电荷离子的质谱，以确定可能对应于不同生物分子构象的组分的贡献。通过对两种、三种和四种带电阿巴米因离子的 H-D 交换质谱进行二维分解，并将其分离，表明阿巴米因离子与气相中的 ND 分子反应，理论上揭示了阿巴米因离子的三种不同结构修饰。通常，对于 H-D 交换质谱，通过测量具有相同电荷状态的离子的峰强度分布来确定存在许多可分辨的蛋白质结构。该方法是新颖的，并且没有已发表的类似方法。
