Top-down proteomics and the challenges of true proteoform characterization

A Po, CE Eyers - Journal of proteome research, 2023 - ACS Publications
Top-down proteomics (TDP) aims to identify and profile intact protein forms (proteoforms)
extracted from biological samples. True proteoform characterization requires that both the …

Mass spectrometry-intensive top-down proteomics: an update on technology advancements and biomedical applications

T Xu, Q Wang, Q Wang, L Sun - Analytical Methods, 2024 - pubs.rsc.org
Proteoforms are all forms of protein molecules from the same gene because of variations at
the DNA, RNA, and protein levels, eg, alternative splicing and post-translational …

Defining proteoform-specific interactions for drug targeting in a native cell signalling environment

CA Lutomski, JL Bennett, TJ El-Baba, D Wu… - Nature Chemistry, 2025 - nature.com
Understanding the dynamics of membrane protein–ligand interactions within a native lipid
bilayer is a major goal for drug discovery. Typically, cell-based assays are used, however …

Small-Scale Serial Size Exclusion Chromatography (s3SEC) for High Sensitivity Top-Down Proteomics of Large Proteoforms

HT Rogers, JA Melby, LE Ehlers, MS Fischer… - Analytical …, 2024 - ACS Publications
Top-down-mass spectrometry (MS)-based proteomics has emerged as a premier technology
to examine proteins at the proteoform level, enabling characterization of genetic mutations …

Top-down proteomics of myosin light chain isoforms define chamber-specific expression in the human heart

EF Bayne, KJ Rossler, ZR Gregorich, TJ Aballo… - Journal of Molecular and …, 2023 - Elsevier
Myosin functions as the “molecular motor” of the sarcomere and generates the contractile
force necessary for cardiac muscle contraction. Myosin light chains 1 and 2 (MLC-1 and-2) …

Comprehensive characterization of endogenous phospholamban proteoforms enabled by photocleavable surfactant and top-down proteomics

HT Rogers, DS Roberts, EJ Larson, JA Melby… - Analytical …, 2023 - ACS Publications
Top-down mass spectrometry (MS)-based proteomics has become a powerful tool for
analyzing intact proteins and their associated post-translational modifications (PTMs). In …

Top-down proteomics

DS Roberts, JA Loo, YO Tsybin, X Liu, S Wu… - Nature Reviews …, 2024 - nature.com
Proteoforms, which arise from post-translational modifications, genetic polymorphisms and
RNA splice variants, play a pivotal role as drivers in biology. Understanding proteoforms is …

Recent progress in quantitative phosphoproteomics

K Zittlau, P Nashier, C Cavarischia-Rega… - Expert Review of …, 2023 - Taylor & Francis
Introduction Protein phosphorylation is a critical post-translational modification involved in
the regulation of numerous cellular processes from signal transduction to modulation of …

The 2023 report on the proteome from the HUPO human proteome project

GS Omenn, L Lane, CM Overall… - Journal of proteome …, 2024 - ACS Publications
Since 2010, the Human Proteome Project (HPP), the flagship initiative of the Human
Proteome Organization (HUPO), has pursued two goals:(1) to credibly identify the protein …

Improved characterization of trastuzumab deruxtecan with PTCR and internal fragments implemented in middle-down MS workflows

C Beaumal, E Deslignière, H Diemer… - Analytical and …, 2024 - Springer
Antibody-drug conjugates (ADCs) are highly complex proteins mainly due to the structural
microvariability of the mAb, along with the additional heterogeneity afforded by the …