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 …

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 …

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 …

Metastability of Protein Solution Structures in the Absence of a Solvent: Rugged Energy Landscape and Glass-like Behavior

TC Cropley, FC Liu, M Chai, MF Bush… - Journal of the …, 2024 - ACS Publications
Native ion mobility/mass spectrometry is well-poised to structurally screen proteomes but
characterizes protein structures in the absence of a solvent. This raises long-standing …

False-positive glycopeptide identification via in-FAIMS fragmentation

V Rangel-Angarita, KE Mahoney, C Kwon, R Sarker… - JACS Au, 2023 - ACS Publications
High-field asymmetric waveform ion mobility spectrometry (FAIMS) separates glycopeptides
in the gas phase prior to mass spectrometry (MS) analysis, thus offering the potential to …

Top-down ion mobility separations of isomeric proteoforms

F Berthias, HA Thurman, G Wijegunawardena… - Analytical …, 2022 - ACS Publications
Continuing advances in proteomics highlight the ubiquity and biological importance of
proteoforms─ proteins with varied sequence, splicing, or distribution of post-translational …

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 …

Peptide collision cross sections of 22 post-translational modifications

A Will, D Oliinyk, C Bleiholder, F Meier - Analytical and Bioanalytical …, 2023 - Springer
Recent advances have rekindled the interest in ion mobility as an additional dimension of
separation in mass spectrometry (MS)-based proteomics. Ion mobility separates ions …

Top‐down ion mobility/mass spectrometry reveals enzyme specificity: Separation and sequencing of isomeric proteoforms

F Berthias, N Bilgin, J Mecinović, ON Jensen - Proteomics, 2024 - Wiley Online Library
Enzymatic catalysis is one of the fundamental processes that drives the dynamic landscape
of post‐translational modifications (PTMs), expanding the structural and functional diversity …