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Histone Modification Screening using Liquid Chromatography, Trapped Ion Mobility Spectrometry, and Time-Of-Flight Mass Spectrometry
Published on: January 12, 2024
Analysis of post-translational modifications by LC-MS/MS.
Hannah Johnson1, Claire E Eyers
1Michael Barber Centre for Mass Spectrometry, School of Chemistry, The University of Manchester, Manchester, UK.
Methods in Molecular Biology (Clifton, N.J.)
|September 15, 2010
Summary
Identifying post-translational modification sites is key to understanding protein function. This work reviews mass spectrometry methods for enriching and analyzing these crucial, yet challenging, protein modifications.
Area of Science:
- Biochemistry
- Proteomics
- Molecular Biology
Background:
- Post-translational modifications (PTMs) are dynamic regulators of cellular processes.
- PTM site and stoichiometry critically influence protein function.
- Identifying PTM sites is essential for understanding protein roles.
Purpose of the Study:
- To review analytical strategies for PTM site identification.
- To highlight LC-MS/MS-based enrichment and analysis workflows.
- To address challenges in characterizing low-stoichiometry PTMs.
Main Methods:
- Overview of Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) strategies.
- Focus on selective enrichment of modified peptides and proteins.
- Discussion of mass spectrometric workflows for PTM analysis.
Main Results:
- Mass spectrometry is ideal for qualitative and quantitative PTM analysis.
- LC-MS/MS offers effective enrichment of modified analytes.
- Various strategies aid in characterizing challenging PTMs.
Conclusions:
- Advanced analytical strategies are paramount for PTM site characterization.
- Mass spectrometry, particularly LC-MS/MS, is a powerful tool for PTM analysis.
- Understanding PTMs is crucial for deciphering protein function and biological roles.
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