PulseExploreJournal ClubResearchersJournals
Instagram
HomeJournal ClubExplore
Synapse
⌘+K
Synapse
May 20, 2026Journal of the American Society for Mass Spectrometry

Nature of False Peptide Identifications in Data-Independent Acquisition-Based Proteome Analysis

View Full Paper
Ask AI
Bookmark
Share

Authors

DPDaniil D. PomogaevMGMikhail V. GorshkovMIMark V. Ivanov

Discussion

Loading...

Member takes

Overview

Randomized trial examines false peptide identifications in DIA mass spectrometry, suggesting improvements in proteomic analysis.

Key Points

  • This work aims to investigate false peptide identifications in DIA mass spectrometry due to missing precursor ions.
  • Utilized a DIA dataset with known UPS proteins spiked into E. coli.
  • Conducted searches against multiple databases with in silico-generated UPS variants.
  • Analyzed misidentification rates of peptides with substitutions based on their position in the sequence.
  • DIA search results frequently misclassify peptides with similar fragmentation patterns but different precursor masses.
  • Peptides with N-terminus substitutions were misidentified more often than those with C-terminus substitutions.
  • Identifications based solely on precursor ions and narrow isolation windows may help reduce errors.

Cite This Study

Pomogaev et al. (2026) studied this question.

synapsesocial.com/papers/6a0d5000f03e14405aa9b8eahttps://doi.org/10.1021/jasms.5c00320
View Full Paper
Ask AI
Bookmark
Share