Mukherjee, Soumya 
ORCID: 0000-0001-5326-4008, Jankevics, Andris ORCID: 0000-0003-2095-6846, Busch, Florian, Lubeck, Markus, Zou, Yang, Kruppa, Gary ORCID: 0000-0002-4844-9865, Heck, Albert JR ORCID: 0000-0002-2405-4404, Scheltema, Richard A ORCID: 0000-0002-1668-0253 and Reiding, Karli R ORCID: 0000-0003-3695-5274
(2023)
Oxonium Ion-Guided Optimization of Ion Mobility-Assisted Glycoproteomics on the timsTOF Pro.
Molecular & cellular proteomics : MCP, 22 (2).
100486-.
Abstract
Spatial separation of ions in the gas phase, providing information about their size as collisional cross-sections, can readily be achieved through ion mobility. The timsTOF Pro (Bruker Daltonics) series combines a trapped ion mobility device with a quadrupole, collision cell, and a time-of-flight analyzer to enable the analysis of ions at great speed. Here, we show that the timsTOF Pro is capable of physically separating N-glycopeptides from nonmodified peptides and producing high-quality fragmentation spectra, both beneficial for glycoproteomics analyses of complex samples. The glycan moieties enlarge the size of glycopeptides compared with nonmodified peptides, yielding a clear cluster in the mobilogram that, next to increased dynamic range from the physical separation of glycopeptides and nonmodified peptides, can be used to make an effective selection filter for directing the mass spectrometer to analytes of interest. We designed an approach where we (1) focused on a region of interest in the ion mobilogram and (2) applied stepped collision energies to obtain informative glycopeptide tandem mass spectra on the timsTOF Pro:glyco-polygon-stepped collision energy-parallel accumulation serial fragmentation. This method was applied to selected glycoproteins, human plasma- and neutrophil-derived glycopeptides. We show that the achieved physical separation in the region of interest allows for improved extraction of information from the samples, even at shorter liquid chromatography gradients of 15 min. We validated our approach on human neutrophil and plasma samples of known makeup, in which we captured the anticipated glycan heterogeneity (paucimannose, phosphomannose, high mannose, hybrid and complex glycans) from plasma and neutrophil samples at the expected abundances. As the method is compatible with off-the-shelve data acquisition routines and data analysis software, it can readily be applied by any laboratory with a timsTOF Pro and is reproducible as demonstrated by a comparison between two laboratories.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Humans, Ions, Glycopeptides, Polysaccharides, Peptides, Tandem Mass Spectrometry |
| Divisions: | Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Systems, Molecular and Integrative Biology |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 09 Apr 2024 09:29 |
| Last Modified: | 09 Apr 2024 13:39 |
| DOI: | 10.1016/j.mcpro.2022.100486 |
| Open Access URL: | https://doi.org/10.1016/j.mcpro.2022.100486 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3180186 |
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