通过基于质谱的蛋白质组学检测人类未注释的微蛋白:一个社区评估
bioRxiv : the preprint server for biology
|March 3, 2025
概括
数以千计通过质谱法 (MS) 检测到的未注释的人类微蛋白显示出显著的研究变异. 大多数检测到的是研究特定的,强调了对微蛋白发现的标准化方法的需要.
科学领域:
- 蛋白质组学和分子生物学
- 生物信息学和计算生物学
背景情况:
- 数以千计的短开放阅读框架 (sORF) 在注释基因之外产生微蛋白质.
- 基于质谱 (MS) 的蛋白质组学和组学是识别这些微蛋白的新兴工具.
研究的目的:
- 评估基于MS的未注释的人类蛋白质识别的可靠性和可重复性.
- 为了评估谱匹配 (PSMs) 的质量,在不同的MS基于微蛋白的研究.
主要方法:
- 文献综述和对已发表的基于MS的未注释的人类蛋白质识别的分析.
- 对于sORF编码蛋白质的基准数据集谱的手动策划.
- 在免疫蛋白质组和传统蛋白质组数据集之间对PSM质量的比较分析.
主要成果:
- 报告的未注释蛋白质的识别在不同研究中变化了三个数量级.
- 报告的近10,000个sORF编码中的96%是单个研究的独特特征.
- 与非免疫类药物研究 (7.8%高质量) 相比,免疫类药物研究显示PSM质量更高 (65%高质量).
结论:
- 在目前基于MS的微蛋白检测研究中存在显著的变异性和低的可重复性.
- 标准化的协议和分析工作流程对于推进微蛋白发现和确定人类微蛋白格局至关重要.
更多相关视频
相关概念视频
Proteomics
7.2K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
7.2K
Peptide Identification Using Tandem Mass Spectrometry
6.4K
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...
6.4K
MALDI-TOF Mass Spectrometry
4.7K
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
4.7K


