Instrumentation at the leading edge of proteomics

TM Peters-Clarke, JJ Coon, NM Riley - Analytical Chemistry, 2024 - ACS Publications
The proteome, or collection of proteoforms expressed in a biological system, is dynamic and
heterogeneous. As our appreciation for the complexity of the proteome has evolved, so have …

Tandem-trapped ion mobility spectrometry/mass spectrometry (t TIMS/MS): a promising analytical method for investigating heterogenous samples

FC Liu, ME Ridgeway, MA Park, C Bleiholder - Analyst, 2022 - pubs.rsc.org
Ion mobility spectrometry/mass spectrometry (IMS/MS) is widely used to study various levels
of protein structure. Here, we review the current state of affairs in tandem-trapped ion …

Top-“Double-Down” Mass Spectrometry of Histone H4 Proteoforms: Tandem Ultraviolet-Photon and Mobility/Mass-Selected Electron Capture Dissociations

K Jeanne Dit Fouque, SA Miller, K Pham… - Analytical …, 2022 - ACS Publications
Post-translational modifications (PTMs) on intact histones play a major role in regulating
chromatin dynamics and influence biological processes such as DNA transcription …

Trapped ion mobility spectrometry, ultraviolet photodissociation, and time-of-flight mass spectrometry for gas-phase peptide isobars/isomers/conformers discrimination

SA Miller, K Jeanne Dit Fouque… - Journal of the …, 2022 - ACS Publications
Trapped ion mobility spectrometry (TIMS) when coupled with mass spectrometry (MS) offers
great advantages for the separation of isobaric, isomeric, and/or conformeric species. In the …

Top-down protein analysis by tandem-trapped ion mobility spectrometry/mass spectrometry (tandem-TIMS/MS) coupled with ultraviolet photodissociation (UVPD) and …

FC Liu, ME Ridgeway, CA Wootton… - Journal of the …, 2023 - ACS Publications
“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) …

Elucidating Structures of Protein Complexes by Collision-Induced Dissociation at Elevated Gas Pressures

FC Liu, TC Cropley, C Bleiholder - Journal of the American …, 2023 - ACS Publications
Ion activation methods carried out at gas pressures compatible with ion mobility separations
are not yet widely established. This limits the analytical utility of emerging tandem-ion …

Developments in trapped ion mobility mass spectrometry to probe the early stages of peptide aggregation

A Depraz Depland, I Stroganova… - Journal of the …, 2023 - ACS Publications
Ion mobility mass spectrometry (IM-MS) has proven to be an excellent method to
characterize the structure of amyloidogenic protein and peptide aggregates, which are …

Enhancing the depth of analyses with next-generation ion mobility experiments

BP Zercher, TA Gozzo, AC Wageman… - Annual Review of …, 2023 - annualreviews.org
Recent developments in ion mobility (IM) technology have expanded the capability to
separate and characterize gas-phase ions of biomolecules, especially when paired with …

Differentiation of Isomeric, Nonseparable Carbohydrates Using Tandem-Trapped Ion Mobility Spectrometry–Mass Spectrometry

J Lee, M Chai, C Bleiholder - Analytical chemistry, 2022 - ACS Publications
Carbohydrates play important roles in biological processes, but their identification remains a
significant analytical problem. While mass spectrometry has increasingly enabled the …

Characterizing the top-down sequencing of protein ions prior to mobility separation in a timsTOF

KA Graham, CF Lawlor, NB Borotto - Analyst, 2023 - pubs.rsc.org
Mass spectrometry (MS)-based proteomics workflows of intact protein ions have increasingly
been utilized to study biological systems. These workflows, however, frequently result in …