蛋白质稳定模型使用化水代谢标记和数据独立获取质谱仪
bioRxiv : the preprint server for biology
|December 15, 2025
概括
这项研究引入了一种使用标记水和质谱的新方法,以准确测量蛋白质周转率. 这种技术增强了蛋白质组覆盖范围,用于研究肌肉生长和缩.
科学领域:
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
- 代谢学 代谢学 代谢学
背景情况:
- 蛋白质循环对于细胞功能和适应至关重要.
- 精确量化蛋白质循环对于理解生理和病理过程至关重要.
- 现有的蛋白质循环研究方法在蛋白质覆盖和准确性方面存在局限性.
研究的目的:
- 开发和验证一种新的工作流程,用于量化蛋白质周转率.
- 将脱水代谢标签与数据独立采集 (DIA) 协同质谱 (MS/MS) 整合起来.
- 克服碎片离子同位素分布分析的局限性,以准确确定丰度.
主要方法:
- 应用一种脱水代谢标记工作流程.
- 使用数据独立采集 (DIA) 串联质谱 (MS/MS).
- 使用前体和碎片离子自动确定周转率,采用双质同位素方法来解决碎片截断问题.
主要成果:
- 在MS/MS中成功量化标签丰富,用于蛋白质周转研究.
- 与数据依赖获取 (DDA) 相比,证明了蛋白质组覆盖范围和深度的增加.
- 在一种小鼠肌管模型中验证了由IGF-1和甲诱导的肌肉缩和缩的新方法.
结论:
- 开发的工作流提供了一种可靠和准确的方法来确定蛋白质周转率.
- DIA-MS/MS结合脱水标记显著增强了全蛋白质组的蛋白质周转分析.
- 这种方法为研究动态细胞过程,如肌肉适应提供了有价值的工具.
相关概念视频
Mass Spectrometry: Overview
8.2K
Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
8.2K
Peptide Identification Using Tandem Mass Spectrometry
6.2K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
6.2K


