J 2022

Sensitivity-Enhanced Multidimensional Solid-State NMR Spectroscopy by Optimal-Control-Based Transverse Mixing Sequences

BLAHUT, Jan, Matthias J BRANDL, Tejaswini PRADHAN, Bernd REIF, Zdenek TOSNER et. al.

Základní údaje

Originální název

Sensitivity-Enhanced Multidimensional Solid-State NMR Spectroscopy by Optimal-Control-Based Transverse Mixing Sequences

Autoři

BLAHUT, Jan, Matthias J BRANDL, Tejaswini PRADHAN, Bernd REIF a Zdenek TOSNER

Vydání

Journal of the American Chemical Society, Washington, American Chemical Society, 2022, 0002-7863

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10406 Analytical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 15.000

Kód RIV

RIV/00216224:14740/22:00128889

Organizační jednotka

Středoevropský technologický institut

UT WoS

000853710600001

Klíčová slova anglicky

Carbon; Humans; Immunoglobulin Light Chains; Magnetic Resonance Spectroscopy; Nuclear Magnetic Resonance; Biomolecular; Proteins; Protons

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 16. 3. 2023 10:31, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

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.

Návaznosti

90127, velká výzkumná infrastruktura
Název: CIISB II