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Updated: Jul 15, 2026

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
08:03

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

分子ダイナミクスシミュレーションを使用してベータペプチドのNMRデータを解釈する

Daniel Trzesniak1, Alice Glättli, Bernhard Jaun

  • 1Laboratory of Physical Chemistry, Swiss Federal Institute of Technology Zürich, ETH-Hönggerberg, CH-8093 Zürich, Switzerland.

Journal of the American Chemical Society
|October 13, 2005
PubMed
まとめ

分子ダイナミクス (MD) シミュレーションは,実験的な核磁気共鳴 (NMR) データと互換性のある構成アンサンブルを提供します. このアプローチは,タンパク質とペプチド構造の決定における不一致を解決し,微妙な形状の違いを明らかにします.

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¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
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¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
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NMR Spectroscopy: Spin–Spin Coupling

The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved in...
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¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

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¹³C NMR: ¹H–¹³C Decoupling

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