Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

2D NMR: Overview of Homonuclear Correlation Techniques01:16

2D NMR: Overview of Homonuclear Correlation Techniques

592
Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...
592
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.6K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.6K
¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.7K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.7K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

1.0K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.0K
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule01:10

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

2.4K
In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1  triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
2.4K
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

665
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
665

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Ultra-Wideline 2D Correlations Among Low-γ Species in Solid-State NMR via the Progressive Saturation of a Common Proton Reservoir.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

On the effects of hyperpolarized water-based dissolution on the solute and solvent <sup>1</sup>H NMR spectra of small molecules.

Physical chemistry chemical physics : PCCP·2026
Same author

14.1 T Liquid-State <sup>19</sup>F Overhauser Dynamic Nuclear Polarization in an Analytical Organic Setting.

Journal of the American Chemical Society·2026
Same author

Assessing the treatment of pancreatic ductal adenocarcinoma by deuterium metabolic imaging: a preclinical study.

Magma (New York, N.Y.)·2026
Same author

Water Proton Spin Relaxivities and Absolute Fluorescent Quantum Yields of Triply and Quadruply Mixed Lanthanide Oxide Nanoparticles.

International journal of molecular sciences·2026
Same author

The ALS-associated E425K mutation uncouples DNAJC7 from the Hsp70 chaperone cycle.

The FEBS journal·2026
Same journal

Biodegradable Self-Powered Electrotherapy Patch for Integrated Smart Wound Management.

Analytical chemistry·2026
Same journal

Metabolite Fraction Libraries for Quantitative NMR Metabolomics.

Analytical chemistry·2026
Same journal

Self-Contained Lateral-Flow Microfluidic Bead-Based Assay for Rapid Quantification of Early-Stage Kidney Biomarkers.

Analytical chemistry·2026
Same journal

Overcoming the Debye Shielding Effect with Concave-Convex Structures for Sensitivity-Enhanced Thin-Film Transistors.

Analytical chemistry·2026
Same journal

Mode-Phase-Difference Photothermal Spectroscopy Assisted by a Bent Biconically Tapered Microfiber for Gas Sensing.

Analytical chemistry·2026
Same journal

Negative-Pressure-Actuated Microfluidics: A Dual-Mode Point-of-Care Sensor for Allergen-Specific IgE in Interstitial Fluid.

Analytical chemistry·2026
関連記事をすべて見る

関連する実験動画

Updated: Jan 8, 2026

Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments
09:25

Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments

Published on: November 1, 2024

2.6K

拡張ハダマール符号化スキームを用いた生体分子CEST NMR実験における感度と分解能の向上

Jihyun Kim1,2, Micael Silva3, E̅riks Kupče4

  • 1Departments of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel.

Analytical chemistry
|December 17, 2025
PubMed
まとめ
この要約は機械生成です。

ハダマール変換(HT)は核磁気共鳴(NMR)実験を加速できますが、化学交換飽和移動(CEST)イメージングにアーチファクトを引き起こします。拡張HT(eHT)スキームはこれらのアーチファクトを排除し、CEST NMRのパフォーマンスを向上させます。

キーワード:
核磁気共鳴化学交換飽和移動ハダマール変換CEST NMRアーチファクト除去高感度高分解能タンパク質CEST

さらに関連する動画

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

15.9K
Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins
07:24

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins

Published on: September 23, 2021

2.2K

関連する実験動画

Last Updated: Jan 8, 2026

Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments
09:25

Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments

Published on: November 1, 2024

2.6K
Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

15.9K
Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins
07:24

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins

Published on: September 23, 2021

2.2K

科学分野:

  • 核磁気共鳴(NMR)分光法
  • 化学交換飽和移動(CEST)イメージング

背景:

  • ハダマール変換(HT)は、スペクトル情報抽出を単純化することにより、より高速な核磁気共鳴(NMR)実験を可能にします。
  • しかし、スピン-スピンカップリングや化学交換などの複雑な相互作用は、スペクトルピーク強度と周波数の間の直接的なリンクを妨げ、NMR実験におけるアーチファクトにつながる可能性があります。

研究 の 目的:

  • 周波数領域ハダマール符号化を使用したNMR化学交換飽和移動(CEST)実験におけるアーチファクトの起源を特定し、説明すること。
  • HTの利点を維持しながら、これらのアーチファクトを排除するための拡張ハダマール変換(eHT)スキームを提案および検証すること。

主な方法:

  • NMR CEST実験における古典的な周波数領域ハダマール符号化に起因するアーチファクトを調査しました。
  • 拡張ハダマール変換(eHT)スキームを開発および実装しました。
  • eHTスキームを使用してCEST NMR実験を実行および処理しました。

主要な成果:

  • 古典的な周波数領域ハダマール符号化が、化学交換によりNMR CEST実験に重大なアーチファクトを導入することを実証しました。
  • 提案されたeHTスキームは、CEST NMR実験においてこれらのアーチファクトを正常に排除しました。
  • eHT処理CEST NMR実験は、タンパク質CESTにおける標準的な実装およびその他の高速化手法と比較して、パフォーマンスが向上しました。

結論:

  • 拡張ハダマール変換(eHT)は、古典的なハダマール符号化によって引き起こされるNMR CEST実験におけるアーチファクトを効果的に除去します。
  • eHTは、高速化CEST NMRにおけるハダマール変換の感度と速度の利点を維持します。
  • この進歩は、高度なタンパク質CEST NMR研究のための、より堅牢で正確なアプローチを提供します。