Structural Studies of Amyloid Fibrils by Paramagnetic Solid-State Nuclear Magnetic Resonance Spectroscopy

Application of paramagnetic solid-state NMR to amyloids is demonstrated, using Y145Stop human prion protein modified with nitroxide spin-label or EDTA-Cu2+ tags as a model. By using sample preparation protocols based on seeding with preformed fibrils, we show that paramagnetic protein analogs can be...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Chemical Society 2018-10, Vol.140 (41), p.13161-13166
Main Authors: Theint, Theint, Xia, Yongjie, Nadaud, Philippe S, Mukhopadhyay, Dwaipayan, Schwieters, Charles D, Surewicz, Krystyna, Surewicz, Witold K, Jaroniec, Christopher P
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Application of paramagnetic solid-state NMR to amyloids is demonstrated, using Y145Stop human prion protein modified with nitroxide spin-label or EDTA-Cu2+ tags as a model. By using sample preparation protocols based on seeding with preformed fibrils, we show that paramagnetic protein analogs can be induced into adopting the wild-type amyloid structure. Measurements of residue-specific intramolecular and intermolecular paramagnetic relaxation enhancements enable determination of protein fold within the fibril core and protofilament assembly. These methods are expected to be widely applicable to other amyloids and protein assemblies.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.8b06758