ArticleAnalytical chemistry2022
Epitope Mapping with Diethylpyrocarbonate Covalent Labeling-Mass Spectrometry.
Article in Analytical chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
- Mass spectrometry-based mapping of conformational epitopes on SARS-CoV-2 antigens targeted by monoclonal antibodies.International journal of biological macromolecules · 2026Article
- Interface Architecture of a VHL-PROTAC Complex with and without Cullin-2.Journal of the American Chemical Society · 2026Article
- Mass Spectrometry-Driven Epitope Mapping: Application of Diethylpyrocarbonate Covalent Labeling for the Immunotherapeutic Target Programmed Cell Death Protein 1.Journal of the American Society for Mass Spectrometry · 2025Article
- Epitope and Paratope Mapping of a SUMO-Remnant Antibody Using Cross-Linking Mass Spectrometry and Molecular Docking.Journal of proteome research · 2025Article
- Mapping conformational changes on bispecific antigen-binding biotherapeutic by covalent labeling and mass spectrometry.Journal of pharmaceutical analysis · 2024Article
- Proteins Can Withstand More Extensive Labeling while Providing Accurate Structural Information in Covalent Labeling-Mass Spectrometry.Journal of the American Society for Mass Spectrometry · 2024Article
- Site-Specific Structural Changes in Long-Term-Stressed Monoclonal Antibody Revealed with DEPC Covalent-Labeling and Quantitative Mass Spectrometry.Pharmaceuticals (Basel, Switzerland) · 2023Article
- Membrane Protein Binding Interactions Studied in Live Cells via Diethylpyrocarbonate Covalent Labeling Mass Spectrometry.Analytical chemistry · 2023Article
- Diethylpyrocarbonate-Based Covalent Labeling Mass Spectrometry of Protein Interactions in a Membrane Complex System.Journal of the American Society for Mass Spectrometry · 2023Article
- Hydrogen Deuterium Exchange and other Mass Spectrometry-based Approaches for Epitope Mapping.Frontiers in analytical science · 2023Article
- Complementary Structural Information for Antibody-Antigen Complexes from Hydrogen-Deuterium Exchange and Covalent Labeling Mass Spectrometry.Journal of the American Society for Mass Spectrometry · 2022Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Antigen-antibody epitope mapping is essential for understanding binding mechanisms and developing new protein therapeutics. In this study, we investigate diethylpyrocarbonate (DEPC) covalent labeling-mass spectrometry as a means of analyzing antigen-antibody interactions using the well-characterized model system of TNFα in complex with three different antibodies. Results show that residues buried in the epitope undergo substantial decreases in labeling, as expected. Interestingly, serine, threonine, and tyrosine residues at the edges of the epitope undergo unexpected increases in labeling. The increased labeling of these weakly nucleophilic residues is caused by the formation of hydrophobic pockets upon antibody binding that presumably increase local DEPC concentrations. Residues that are distant from the epitope generally do not undergo changes in labeling extent; however, some that do change experience variations in their local microenvironment due to side-chain reorganization or stabilization of the TNFα trimer that occurs upon binding. Overall, DEPC labeling of antigen-antibody complexes is found to depend on both changes in solvent exposure and changes to the residue microenvironment.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.