ArticleJournal of the American Society for Mass Spectrometry2023
Top-Down Protein Analysis by Tandem-Trapped Ion Mobility Spectrometry/Mass Spectrometry (Tandem-TIMS/MS) Coupled with Ultraviolet Photodissociation (UVPD) and Parallel Accumulation/Serial Fragmentation (PASEF) MS/MS Analysis.
Article in Journal of the American Society for Mass Spectrometry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 15 citations in OpenAlex.
- Single-Ion Imaging Native Mass Spectrometry: Unraveling the Structural Features and Dissociation Energetics of Macromolecular Assemblies.Journal of the American Society for Mass Spectrometry · 2026Article
- Time-Resolved Study of In Situ Generated Protein Subcomplexes by Tandem-Trapped Ion Mobility Spectrometry.Journal of mass spectrometry : JMS · 2026Article
- SLIMPHONY: A SLIM-Based Instrument That Orchestrates Complex Ion Mobility-Mass Spectrometry Experiments.Journal of the American Society for Mass Spectrometry · 2026Article
- How to Use Quantum Chemistry for Analyzing Mass Spectrometry Data.Mass spectrometry (Tokyo, Japan) · 2026Review
- Histone Analysis Using Mobility- and Mass-Selected Ultraviolet Photodissociation in Tandem with Ultra-High-Resolution Mass Spectrometry.Analytical chemistry · 2025Article
- Improved Annotation of Internal Fragments via Trapped-Ion Mobility Enhanced Top-Down Sequencing of Protein Ions.Journal of mass spectrometry : JMS · 2025Article
- Mobility-Assisted Pseudo-MSJournal of the American Society for Mass Spectrometry · 2024Article
- Conformational and Structural Characterization of Knotted Proteins.Biochemistry · 2024Article
- Probing High-Order Transient Oligomers Using Ion Mobility Mass Spectrometry Coupled with Infrared Action Spectroscopy.Analytical chemistry · 2024Article
- Mapping the Multiscale Proteomic Organization of Cellular and Disease Phenotypes.Annual review of biomedical data science · 2024Review
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
Abstract
"Top-down" proteomics analyzes intact proteins and identifies proteoforms by their intact mass as well as the observed fragmentation pattern in tandem mass spectrometry (MS/MS) experiments. Recently, hybrid ion mobility spectrometry-mass spectrometry (IM/MS) methods have gained traction for top-down experiments, either by allowing top-down analysis of individual isomers or alternatively by improving signal/noise and dynamic range for fragment ion assignment. We recently described the construction of a tandem-trapped ion mobility spectrometer/mass spectrometer (tandem-TIMS/MS) coupled with an ultraviolet (UV) laser and demonstrated a proof-of-principle for top-down analysis by UV photodissociation (UVPD) at 2-3 mbar. The present work builds on this with an exploration of a top-down method that couples tandem-TIMS/MS with UVPD and parallel-accumulation serial fragmentation (PASEF) MS/MS analysis. We first survey types and structures of UVPD-specific fragment ions generated in the 2-3 mbar pressure regime of our instrument. Notably, we observe UVPD-induced fragment ions with multiple conformations that differ from those produced in the absence of UV irradiation. Subsequently, we discuss how MS/MS spectra of top-down fragment ions lend themselves ideally for probability-based scoring methods developed in the bottom-up proteomics field and how the ability to record automated PASEF-MS/MS spectra resolves ambiguities in the assignment of top-down fragment ions. Finally, we describe the coupling of tandem-TIMS/MS workflows with UVPD and PASEF-MS/MS analysis for native top-down protein analysis.
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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.