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Issue 28, 2018
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Self-assembly of toroidal proteins explored using native mass spectrometry

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Abstract

The peroxiredoxins are a well characterised family of toroidal proteins which can self-assemble into a striking array of quaternary structures, including protein nanotubes, making them attractive as building blocks for nanotechnology. Tools to characterise these assemblies are currently scarce. Here, assemblies of peroxiredoxin proteins were examined using native mass spectrometry and complementary solution techniques. We demonstrated unequivocally that tube formation is fully reversible, a useful feature in a molecular switch. Simple assembly of individual toroids was shown to be tunable by pH and the presence of a histidine tag. Collision induced dissociation experiments on peroxiredoxin rings revealed a highly unusual symmetrical disassembly pathway, consistent with the structure disassembling as a hexamer of dimers. This study provides the foundation for the rational design and precise characterisation of peroxiredoxin protein structures where self-assembly can be harnessed as a key feature for applications in nanotechnology.

Graphical abstract: Self-assembly of toroidal proteins explored using native mass spectrometry

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Publication details

The article was received on 26 Mar 2018, accepted on 15 Jun 2018 and first published on 18 Jun 2018


Article type: Edge Article
DOI: 10.1039/C8SC01379A
Citation: Chem. Sci., 2018,9, 6099-6106
  • Open access: Creative Commons BY license
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    Self-assembly of toroidal proteins explored using native mass spectrometry

    N. A. Yewdall, Timothy M. Allison, F. G. Pearce, C. V. Robinson and J. A. Gerrard, Chem. Sci., 2018, 9, 6099
    DOI: 10.1039/C8SC01379A

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