Number of the records: 1
Sensitivity-Enhanced Multidimensional Solid-State NMR Spectroscopy by Optimal-Control-Based Transverse Mixing Sequences
- 1.
SYSNO ASEP 0561460 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Sensitivity-Enhanced Multidimensional Solid-State NMR Spectroscopy by Optimal-Control-Based Transverse Mixing Sequences Author(s) Blahut, Jan (UOCHB-X)
Brandl, M. J. (DE)
Pradhan, T. (DE)
Reif, B. (DE)
Tošner, Z. (CZ)Source Title Journal of the American Chemical Society. - : American Chemical Society - ISSN 0002-7863
Roč. 144, č. 38 (2022), s. 17336-17340Number of pages 5 s. Language eng - English Country US - United States Keywords distance measurements ; proteins ; improvement OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob
CIISB II - 90127 - Masarykova univerzitaMethod of publishing Limited access Institutional support UOCHB-X - RVO:61388963 UT WOS 000853710600001 EID SCOPUS 85137857439 DOI 10.1021/jacs.2c06568 Annotation Recently, proton-detected magic-angle spinning (MAS) solid-state nuclear magnetic resonance (NMR) spectroscopy has become an attractive tool to study the structure and dynamics of insoluble proteins at atomic resolution. The sensitivity of the employed multidimensional experiments can be systematically improved when both transversal components of the magnetization are transferred simultaneously after an evolution period. The method of preservation of equivalent pathways has been explored in solution-state NMR, however, it does not find widespread application due to relaxation issues connected with increased molecular size. We present here for the first time heteronuclear transverse mixing sequences for correlation experiments at moderate and fast MAS frequencies. Optimal control allows to boost the signal-to-noise ratio (SNR) beyond the expected factor of root 2 for each indirect dimension. In addition to the carbon-detected sensitivity-enhanced 2D NCA experiment, we present a novel proton-detected, doubly sensitivity-enhanced 3D hCANH pulse sequence for which we observe a 3-fold improvement in SNR compared to the conventional experimental implementation. The sensitivity gain turned out to be essential to unambiguously characterize a minor fibril polymorph of a human lambda-III immunoglobulin light chain protein that escaped detection so far. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2023 Electronic address https://doi.org/10.1021/jacs.2c06568
Number of the records: 1