Recent advances in isobaric labeling and applications in quantitative proteomics

MK Sivanich, TJ Gu, DN Tabang, L Li - Proteomics, 2022 - Wiley Online Library
Mass spectrometry (MS) has emerged at the forefront of quantitative proteomic techniques.
Liquid chromatography‐mass spectrometry (LC‐MS) can be used to determine abundances …

Seeing the complete picture: proteins in top-down mass spectrometry

T Habeck, F Lermyte - Essays in Biochemistry, 2023 - portlandpress.com
Top-down protein mass spectrometry can provide unique insights into protein sequence and
structure, including precise proteoform identification and study of protein–ligand and protein …

Proteoform‐selective imaging of tissues using mass spectrometry

M Yang, H Hu, P Su, PM Thomas… - Angewandte Chemie …, 2022 - Wiley Online Library
Unraveling the complexity of biological systems relies on the development of new
approaches for spatially resolved proteoform‐specific analysis of the proteome. Herein, we …

Targeted quantification of proteoforms in Complex samples by proteoform reaction monitoring

CF Huang, JT Kline, F Negrão, MT Robey… - Analytical …, 2024 - ACS Publications
Existing mass spectrometric assays used for sensitive and specific measurements of target
proteins across multiple samples, such as selected/multiple reaction monitoring (SRM/MRM) …

Quantitative top-down proteomics by isobaric labeling with thiol-directed tandem mass tags

K Winkels, T Koudelka, A Tholey - Journal of Proteome Research, 2021 - ACS Publications
While identification-centric (qualitative) top-down proteomics (TDP) has seen rapid progress
in the recent past, the quantification of intact proteoforms within complex proteomes is still …

Optimization of protein-level tandem mass tag (TMT) labeling conditions in complex samples with top-down proteomics

Y Guo, D Yu, KA Cupp-Sutton, X Liu, S Wu - Analytica chimica acta, 2022 - Elsevier
Isobaric chemical tag labels (eg, iTRAQ and TMT) have been extensively utilized as a
standard quantification approach in bottom-up proteomics, which provides high multiplexing …

Proteoforms expand the world of microproteins and short open reading frame-encoded peptides

L Cassidy, PT Kaulich, A Tholey - Iscience, 2023 - cell.com
Microproteins and short open reading frame-encoded peptides (SEPs) can, like all proteins,
carry numerous posttranslational modifications. Together with posttranscriptional processes …

Optimization of higher-energy collisional dissociation fragmentation energy for intact protein-level tandem mass tag labeling

Y Guo, T Chowdhury, M Seshadri… - Journal of proteome …, 2023 - ACS Publications
Isobaric chemical tag labeling (eg, TMT) is a commonly used approach in quantitative
proteomics, and quantification is enabled through detection of low-mass reporter ions …

Biological mass spectrometry enables spatiotemporal 'omics: From tissues to cells to organelles

LR Pade, KE Stepler, EP Portero… - Mass spectrometry …, 2024 - Wiley Online Library
Biological processes unfold across broad spatial and temporal dimensions, and
measurement of the underlying molecular world is essential to their understanding …

Middle-down mass spectrometry reveals activity-modifying phosphorylation barcode in a class CG protein-coupled receptor

AN Ives, HA Dunn, HS Afsari, HDS Seckler… - Journal of the …, 2022 - ACS Publications
G protein-coupled receptors (GPCRs) are the largest family of membrane receptors in
humans. They mediate nearly all aspects of human physiology and thus are of high …