相关实验视频

Updated: May 30, 2025

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Published on: August 16, 2016

由补充元件9形成的大型和稳定的纳米孔用于表征单折叠蛋白质

Wachara Chanakul¹, Anasua Mukhopadhyay^1,2, Saurabh Awasthi¹

¹Adolphe Merkle Institute, University of Fribourg, Fribourg 1700, Switzerland.

|January 28, 2025

概括

研究人员使用补充成分9 (C9) 开发了一种新的生物纳米孔,用于精确的单分子蛋白质分析. 这些稳定的多 (C9) 孔精确地确定蛋白质体积,形状和结构状态.

科学领域:

生物物理学的生物物理.
纳米技术纳米技术
蛋白质分析蛋白质分析

背景情况:

生物纳米孔是单分子分析的宝贵工具.
现有的纳米孔在稳定性和分析物特性方面存在局限性.

研究的目的:

介绍和描述由补充成分9 (C9) 形成的新型生物纳米孔.
为了证明聚C9纳米孔对于精确的单分子蛋白质分析的实用性.

主要方法:

补充元件9 (C9) 的自组合形成了多 (C9) 纳米孔.
电阻脉冲记录以分析蛋白质体积,形状和形状.
使用了具有不同离子强度和跨膜电压的电解质溶液.

主要成果:

聚C9) 纳米孔很大 (直径10±4纳米,长13纳米) 并且稳定30分钟.
分析蛋白通过电透流被捕获,其停留时间超过300μs.
精确确定蛋白质的体积和形状 (9230 kDa) 并区分蛋白质构造 (腺酸酶).

结论:

聚C9) 纳米孔为单分子蛋白质的表征提供了一个稳定有效的平台.
这种方法为分析折叠蛋白质提供了高灵敏度和精度.
聚C9) 纳米孔系统提升了单分子生物物理分析的能力.

关键词:

安菲波尔 (Amphipol) 是一种类型.蛋白质构造的变化.补充元件 9 补充元件 9 补充元件大大的生物纳米孔.膜攻击复杂的复杂的攻击.蛋白质纳米孔是一种蛋白质.电阻脉冲记录仪电阻脉冲记录仪一个单分子分子.

更多相关视频

Characterization of Proteins by Size-Exclusion Chromatography Coupled to Multi-Angle Light Scattering SEC-MALS

Characterization of Proteins by Size-Exclusion Chromatography Coupled to Multi-Angle Light Scattering SEC-MALS

Published on: June 20, 2019

Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis

Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis

Published on: July 16, 2020

相关概念视频

Structure of Porins

Structure of Porins

Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel...

Protein Folding

Protein Folding