相关实验视频

Updated: Jun 28, 2025

15N CPMG Relaxation Dispersion for the Investigation of Protein Conformational Dynamics on the µs-ms Timescale

15N CPMG Relaxation Dispersion for the Investigation of Protein Conformational Dynamics on the µs-ms Timescale

Published on: April 19, 2021

一个延迟脱甲基-TROSY脉冲序列用于在凝聚物中折叠的蛋白质和RNA的原子分辨率研究

Rashik Ahmed¹, Atul K Rangadurai¹, Lisa Ruetz²

¹Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada; Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada; Program in Molecular Medicine, Hospital for Sick Children Research Institute, Toronto, ON M5G 0A4, Canada.

Journal of magnetic resonance (San Diego, Calif. : 1997)

|April 16, 2024

概括

我们开发了一种新的NMR方法来研究粘性相隔系统中的生物分子. 这种技术提供了高质量的,特定地点的蛋白质和核酸在凝结物的数据.

科学领域:

生物物理学的生物物理.
结构生物学结构生物学
生物化学生物化学

背景情况:

溶液NMR光谱学为生物分子相互作用提供了原子级的洞察力.
分相系统,如生物分子凝聚物,对于细胞功能至关重要.
凝结相中的高粘度阻碍了定量NMR分析.

研究的目的:

开发一种能在相隔系统中克服粘度挑战的NMR方法.
为了能够对缩物中的蛋白质和核酸进行特定地点的定量分析.
研究无膜有机体内的生物分子相互作用.

主要方法:

设计了一个基于延迟解的异核多重量子连贯 (HMQC) 脉冲序列.
甲基-TROSY (横向放松优化光谱) 用于甲基标记分子.
该方法在蛋白质凝聚物中的蛋白质和核酸上进行了测试.

主要成果:

获得了高灵敏度和出色的光谱质量.
该方法成功分析了新生形式的超氧化物脱酶.
在CAPRIN1凝聚物中的一个小RNA片段得到了有效的研究.

结论:

开发的NMR技术增强了相隔系统中生物分子相互作用的研究.
这种方法在具有挑战性的粘性环境中促进了定量,特定地点的分析.
它为了解生物分子凝聚物的结构和动态开辟了新的途径.

关键词:

卡普林 (CAPRIN) 是一个动物.延迟脱的时间在HMQC中,HMQC是什么?阶段分离阶段分离阶段分离缩物中的蛋白质和RNA是"客户".增加了敏感度的增长.

更多相关视频

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

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

Published on: November 1, 2024

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

相关概念视频

Double Resonance Techniques: Overview

Double Resonance Techniques: Overview

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...

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

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

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...