We describe the utility of small nutation angle (acute;
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Side-Chain Dynamics of the ?1B-Adrenergic Receptor determined by NMR via Methyl Relaxation
Side-Chain Dynamics of the ?1B-Adrenergic Receptor determined by NMR via Methyl Relaxation
Abstract
G protein-coupled receptors (GPCRs) are medically important membrane proteins that sample inactive, intermediate, and active conformational states characterized by relatively slow interconversions (~?s–ms). On a faster timescale (~ps–ns), the conformational landscape of GPCRs is governed by the rapid dynamics of amino acid side chains. Such dynamics are essential for protein functions such as ligand recognition and allostery. Unfortunately, technical challenges have almost entirely...
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10-09-2023 04:39 PM
[NMR paper] Side-Chain Dynamics of the ?1B -Adrenergic Receptor determined by NMR via Methyl Relaxation
Side-Chain Dynamics of the ?1B -Adrenergic Receptor determined by NMR via Methyl Relaxation
G protein-coupled receptors (GPCRs) are medically important membrane proteins that sample inactive, intermediate, and active conformational states characterized by relatively slow interconversions (~?s-ms). On a faster timescale (~ps-ns), the conformational landscape of GPCRs is governed by the rapid dynamics of amino acid side chains. Such dynamics are essential for protein functions such as ligand recognition and allostery. Unfortunately, technical challenges have almost entirely precluded the......
nmrlearner
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10-09-2023 04:39 PM
[NMR paper] Unambiguous Side-Chain Assignments for Solid-State NMR Structure Elucidation of Nondeuterated Proteins via a Combined 5D/4D Side-Chain-to-Backbone Experiment
Unambiguous Side-Chain Assignments for Solid-State NMR Structure Elucidation of Nondeuterated Proteins via a Combined 5D/4D Side-Chain-to-Backbone Experiment
Owing to fast-magic-angle-spinning technology, proton-detected solid-state NMR has been facilitating the analysis of insoluble, crystalline, sedimented, and membrane proteins. However, potential applications have been largely restricted by limited access to side-chain resonances. The recent availability of spinning frequencies exceeding 100 kHz in principle now allows direct probing of all protons without the need for partial...
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02-17-2022 11:34 AM
[ASAP] Observation of Sub-Microsecond Protein Methyl-Side Chain Dynamics by Nanoparticle-Assisted NMR Spin Relaxation
Observation of Sub-Microsecond Protein Methyl-Side Chain Dynamics by Nanoparticle-Assisted NMR Spin Relaxation
Xinyao Xiang, Alexandar L. Hansen, Lei Yu, Gregory Jameson, Lei Bruschweiler-Li, Chunhua Yuan, and Rafael Bru?schweiler
https://pubs.acs.org/na101/home/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/jacs.1c04687/20210824/images/medium/ja1c04687_0005.gif
Journal of the American Chemical Society
DOI: 10.1021/jacs.1c04687
http://feeds.feedburner.com/~r/acs/jacsat/~4/8joQZH1-cyY
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08-26-2021 06:47 AM
[NMR paper] Observation of Sub-Microsecond Protein Methyl-Side Chain Dynamics by Nanoparticle-Assisted NMR Spin Relaxation
Observation of Sub-Microsecond Protein Methyl-Side Chain Dynamics by Nanoparticle-Assisted NMR Spin Relaxation
Amino-acid side-chain properties in proteins are key determinants of protein function. NMR spin relaxation of side chains is an important source of information about local protein dynamics and flexibility. However, traditional solution NMR relaxation methods are most sensitive to sub-nanosecond dynamics lacking information on slower ns-?s time-scale motions. Nanoparticle-assisted NMR spin relaxation (NASR) of methyl-side chains is introduced here as a window into these ns-?s...
[NMR paper] Probing Side-Chain Dynamics in Proteins by NMR Relaxation of Isolated (13)C Magnetization Modes in (13)CH(3) Methyl Groups
Probing Side-Chain Dynamics in Proteins by NMR Relaxation of Isolated (13)C Magnetization Modes in (13)CH(3) Methyl Groups
The dynamics of methyl-bearing side chains in proteins were probed by ^(13)C relaxation measurements of a number of ^(13)C magnetization modes in selectively ^(13)CH(3)-labeled methyl groups of proteins. We first show how ^(13)C magnetization modes in a ^(13)CH(3) spin-system can be isolated using acute-angle ¹H radio-frequency pulses. The parameters of methyl-axis dynamics, a measure of methyl-axis ordering (S(axis)²) and the correlation time of fast local methyl-axis...
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03-27-2021 02:09 AM
NMR Relaxation and Molecular Dynamics Simulations of Side Chain Dynamics in Proteins
NMR Relaxation and Molecular Dynamics Simulations of Side Chain Dynamics in Proteins
Publication date: 2 February 2018
Source:Biophysical Journal, Volume 114, Issue 3, Supplement 1</br>
Author(s): Falk Hoffmann, Mengjun Xue, Frans Mulder, Lars Schäfer</br>
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