相关实验视频

Updated: Jun 6, 2025

Rapid Assessment of Membrane Protein Quality by Fluorescent Size Exclusion Chromatography

Rapid Assessment of Membrane Protein Quality by Fluorescent Size Exclusion Chromatography

Published on: January 6, 2023

评估蛋白质定量方法对膜蛋白的疗效

Jana Löptien¹, Sidney Vesting¹, Susanne Dobler¹

¹Molecular Evolutionary Biology Institute of Cell and Systems Biology of Animals, Universität Hamburg, Hamburg, Germany.

|December 3, 2024

概括

传统的蛋白质量测量方法高估了跨膜蛋白质度. 一种新开发的酶链接免疫吸收试验 (ELISA) 提供了Na,K-ATPase (NKA) 的准确测量,提高了下游试验的可靠性.

科学领域:

生物化学生化学
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

蛋白质量化对于生物研究至关重要.
像洛瑞,BCA和布拉德福德测定等常用的方法可能对跨膜蛋白不准确.
Na,K-ATPase (NKA) 是一种关键的跨膜蛋白,与各种生理过程有关.

研究的目的:

为了评估劳里,BCA和布拉德福德测试对量化Na,K-ATPase (NKA) 的准确性.
开发和验证一种新的酶链接免疫吸收试验 (ELISA) 用于NKA量化.
将传统方法的性能与开发的ELISA进行比较.

主要方法:

对洛瑞,BCA和布拉德福德蛋白质测定与新开发的NKA特定ELISA进行比较分析.
开发一种使用相对标准曲线适应性的ELISA.
在随后的体外试验中,使用从每个量化方法中获得的蛋白质度来评估试验性能.

主要成果:

与ELISA相比,传统的蛋白质量计方法显著高估了NKA度.
过高估计归因于样本中异质非标蛋白的存在.
使用ELISA衍生度用于测试准备,导致数据变化始终低.

结论:

已建立的蛋白质量测量方法对于像NKA.这样的跨膜蛋白质是不可靠的.
开发的ELISA为NKA量化提供了更准确和更适应的方法.
使用ELISA精确量化蛋白质可以提高下游生物分析的可重复性.

关键词:

艾丽莎·伊丽莎·伊丽莎这就是Na,K-ATPase.蛋白质的量化蛋白质的量化.跨膜蛋白质是一种跨膜蛋白质.

更多相关视频

Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification

Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification

Published on: August 17, 2015

Proteome-wide Quantification of Labeling Homogeneity at the Single Molecule Level

Proteome-wide Quantification of Labeling Homogeneity at the Single Molecule Level

Published on: April 19, 2019

相关概念视频

Protein Diffusion in the Membrane

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...

Detergent Purification of Membrane Proteins

Detergent Purification of Membrane Proteins

Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...