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Updated: Dec 30, 2025

Author Spotlight: Quantitative Detection of DNA Protein Crosslinks and Their Post-Translational Modifications
Published on: April 21, 2023
The challenge of detecting modifications on proteins
Lauren Elizabeth Smith1, Adelina Rogowska-Wrzesinska1
1Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark.
Post-translational modifications (PTMs) are crucial for protein function and cellular processes. This review details mass spectrometry (MS) methods for PTM analysis, highlighting common challenges in studying these vital molecular events.
Area of Science:
- Biochemistry
- Proteomics
- Molecular Biology
Background:
- Post-translational modifications (PTMs) are critical regulators of protein function, impacting cellular processes in health and disease.
- Understanding PTMs is essential for deciphering cellular mechanisms and disease pathologies.
Purpose of the Study:
- To provide an overview of established mass spectrometry (MS)-based approaches for analyzing PTMs.
- To discuss common challenges and complications encountered in PTM investigation using MS.
Main Methods:
- Mass spectrometry (MS) for peptide mass determination and sequencing.
- Site-specific PTM detection and characterization.
Main Results:
- MS is a powerful tool for identifying and localizing PTMs on proteins.
- Analysis is complicated by PTMs' diverse chemical properties, low abundance, and instability.
- Bioinformatics and MS compatibility present practical hurdles.
Conclusions:
- Established MS-based strategies exist for PTM analysis.
- Overcoming challenges related to PTM characteristics and analytical methods is key to advancing PTM research.
- Specific examples of phosphorylation, lysine acetylation, and redox modifications illustrate these analytical complexities.
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