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Related Concept Videos

Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Updated: Mar 27, 2026

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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What Does Next-Generation Mass Spectrometry Offer for Proteomics? A Comprehensive Platform Comparison.

Filipa Blasco Tavares Pereira Lopes1,2, Daniela Schlatzer1, Tara Sudhadevi3

  • 1Center for Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, Ohio 44106, United States.

Journal of Proteome Research
|March 26, 2026
PubMed
Summary
This summary is machine-generated.

Next-generation mass spectrometry platforms significantly increase proteome depth and improve systems biology insights. These advanced tools enhance data acquisition, enabling more comprehensive analysis of biological systems.

Keywords:
DDADIAOrbitrap Astralbronchopulmonary dysplasiadata-dependent acquisitiondata-independent acquisitionproteomicstimsTOF Ultra

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Area of Science:

  • Proteomics and Systems Biology
  • Mass Spectrometry
  • Biomolecular Analysis

Background:

  • Next-generation mass spectrometry platforms like Orbitrap Astral and timsTOF Ultra offer enhanced sensitivity and analytical depth.
  • Previous platforms, such as Orbitrap Exploris 480, provided a baseline for comparison in proteomic studies.
  • Bronchopulmonary dysplasia models in neonatal mice present a complex biological system for proteomic investigation.

Purpose of the Study:

  • To compare the performance of next-generation mass spectrometry platforms (Orbitrap Astral, timsTOF Ultra) against a current-generation platform (Orbitrap Exploris 480).
  • To evaluate different data acquisition strategies, including data-dependent acquisition (DDA) and data-independent acquisition (DIA), on these platforms.
  • To assess the impact of enhanced proteome depth on systems biology analyses, including subcellular localization and pathway enrichment.

Main Methods:

  • Comparative proteomic analysis using Orbitrap Exploris 480 (DDA/DIA), Orbitrap Astral (HR-DIA), and timsTOF Ultra (DIA-PASEF).
  • Utilized neonatal mouse lung tissues from a bronchopulmonary dysplasia model (n=12).
  • Analyzed proteome coverage, peptide and protein quantification, sample size requirements, subcellular compartment annotation, and reactome pathway coverage.

Main Results:

  • All platforms identified approximately 4000 common proteins; DIA methods achieved 98% proteome coverage.
  • Orbitrap Astral and timsTOF Ultra quantified significantly more peptides and proteins compared to Orbitrap Exploris 480 DDA.
  • Next-generation platforms reduced the recommended sample size by approximately 66% and improved subcellular and pathway annotations.
  • Differential expression analysis revealed more phenotype-associated proteins and enriched pathways using DIA data, without functional annotation bias.

Conclusions:

  • Data-independent acquisition (DIA) on multivendor next-generation mass spectrometry platforms provides superior proteome coverage and depth.
  • These advanced platforms enable more comprehensive systems biology assessments, enhancing the understanding of complex biological systems.
  • The increased proteomic depth and efficiency of next-generation platforms facilitate more robust biomarker discovery and biological interpretation.