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相关概念视频

Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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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...
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Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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相关实验视频

Updated: Jun 19, 2025

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

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通过残留分辨条形码和组合码计数来扩大蛋白质的识别.

Weiming Guo1, Yuan Liu1, Yu Han1

  • 1Synthetic and Functional Biomolecules Center, Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.

National science review
|July 26, 2024
PubMed
概括
此摘要是机器生成的。

这项研究介绍了AmproCode,一种用于蛋白质识别的新方法. 它使用DNA条形编码创建可放大蛋白质指纹,从而实现超敏感检测,并为下一代蛋白质测序铺平道路.

关键词:
DNA 条形码编码可以放大指纹的指纹.构成代码计数的组成代码.蛋白质识别 蛋白质识别关于残留物的特定化学.

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An Integrated Approach for Microprotein Identification and Sequence Analysis
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Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry
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科学领域:

  • 生物化学 生化学
  • 分子生物学分子生物学
  • 蛋白质组学是指蛋白质组学.

背景情况:

  • 超敏感蛋白质的识别对于研究和诊断至关重要.
  • 与核酸不同,蛋白质的直接放大是不可能的,这阻碍了单分子测序.
  • 现有的方法在复杂的蛋白质组样本的灵敏度和可扩展性方面面临挑战.

研究的目的:

  • 开发一种可放大蛋白质指纹的概念验证方法.
  • 为了克服直接蛋白质放大功能的局限性.
  • 为了从复杂的样本中实现超敏感蛋白质的识别.

主要方法:

  • 和蛋白质的残留解析DNA条形编码.
  • 通过DNA条形码的定量PCR放大计数组合码.
  • 开发一个用于蛋白质识别的数据库搜索算法.
  • 设计残留物特定DNA条形码和放大工作流程.

主要成果:

  • 通过对蛋白质组和秘密组覆盖的计算模拟,证明了AmproCode的理论可行性.
  • 通过使用开发的工作流程,成功识别了fmol/L水平的合成模型.
  • 建立了前所未有的可放大蛋白质指纹方法的基础.

结论:

  • AmproCode提供了一种通过创建可放大指纹来识别蛋白质的新方法.
  • 该方法使得蛋白质的超敏感检测,即使在微量水平.
  • AmproCode有可能在复杂样本中单分子识别蛋白质,并推进蛋白质测序技术.