Unlike twins: an NMR comparison of two α-synuclein polymorphs featuring different toxicity.
Unlike twins: an NMR comparison of two α-synuclein polymorphs featuring different toxicity.
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与双胞胎不同:两种具有不同毒性的α-突触核蛋白多晶型物的NMR比较。
DOI:
10.1371/journal.pone.0090659
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Meier BH
中科院分区:
文献类型:
--
作者:
Gath J;Bousset L;Habenstein B;Melki R;Böckmann A;Meier BH
We structurally compare, using solid-state NMR, two different polymorphs of α-synuclein which, as established recently, display contrasting biochemical properties, toxicity, and tropism for cells. We show that both forms, which can each be produced as a pure polymorph, are greatly different in secondary structure. While β-sheets are the dominating secondary structure elements for both polymorphs, they are markedly divergent in terms of number of elements, as well as their distribution. We demonstrate that all identified β-sheets feature an in-register parallel stacking for both polymorphs. The two forms show a different molecular arrangement in the unit cell and distinct dynamic features, while sharing a highly flexible C-terminal domain. The use of reproducible, well-identified conditions for sample preparation and the recording of identical NMR experiments allows for a direct comparison of the results.
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