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Default Detection of side-chain proton resonances of fully protonated biosolids in nano-litre volumes by magic angle spinning solid-state NMR.

Detection of side-chain proton resonances of fully protonated biosolids in nano-litre volumes by magic angle spinning solid-state NMR.

Detection of side-chain proton resonances of fully protonated biosolids in nano-litre volumes by magic angle spinning solid-state NMR.

J Biomol NMR. 2018 Mar 03;:

Authors: Tolchard J, Pandey MK, Berbon M, Noubhani A, Saupe SJ, Nishiyama Y, Habenstein B, Loquet A

Abstract
We present a new solid-state NMR proton-detected three-dimensional experiment dedicated to the observation of protein proton side chain resonances in nano-liter volumes. The experiment takes advantage of very fast magic angle spinning and double quantum 13C-13C transfer to establish efficient (H)CCH correlations detected on side chain protons. Our approach is demonstrated on the HET-s prion domain in its functional amyloid fibrillar form, fully protonated, with a sample amount of less than 500 g using a MAS frequency of 70*kHz. The majority of aliphatic and aromatic side chain protons (70%) are observable, in addition to H? resonances, in a single experiment providing a complementary approach to the established proton-detected amide-based multidimensional solid-state NMR experiments for the study and resonance assignment of biosolid samples, in particular for aromatic side chain resonances.


PMID: 29502224 [PubMed - as supplied by publisher]



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