Resources

• Weak or Missing MRM Peaks? Troubleshooting Transition Selection, Matrix Effects, and LC Separation

An MRM assay can be fully configured yet fail to deliver usable quantitative data. Transitions may be defined, internal standards may be spiked, and the LC-MS run may complete without error, yet target peptides show weak peaks, missing transitions, poor linearity, or high variability across replicates.

• What is LC-MS in proteomics?

Learn what LC-MS means in proteomics, how liquid chromatography and mass spectrometry work together, how LC-MS differs from LC-MS/MS, and common uses in protein analysis.

• What is LC-MS in bioactivity screening and proteomics?

Learn what LC-MS means in bioactivity screening and proteomics, how each field uses liquid chromatography mass spectrometry, and where screening and proteomics workflows overlap.

• Non-Reducing Peptide Mapping vs. Intact Mass Analysis for Disulfide Bond Mapping

Compare non-reducing peptide mapping and intact mass analysis for disulfide bond mapping, including method differences, decision workflow, use cases, and combined characterization strategies.

• MS-based proteomics: A short introduction to the core concepts of proteomics and mass spectrometry

A short introduction to MS-based proteomics covering core concepts of proteomics and mass spectrometry, including peptide measurement, MS/MS, PSM assignment, protein inference, and quantitation basics.

• Mass Spectrometry: Structural Proteomics

Learn how mass spectrometry supports structural proteomics via HDX-MS, cross-linking MS, native MS, and connectivity mapping for biologics and complexes.

• Mass Spectrometry Proteomics: Turning Complex Protein Samples into Interpretable Biological Evidence

Learn how mass spectrometry proteomics converts complex protein samples into interpretable evidence via LC-MS/MS, inference, and quantitation.

• Mass Spectrometry Proteomics: Methods, Workflow, and Applications

Learn mass spectrometry proteomics methods, LC-MS/MS workflow, quantification strategies, applications, and project design for protein analysis.

• Mass Spec Based Proteomics

Learn what mass spec based proteomics is, how the technology stack works, main experiment types, common applications, and how to plan a mass spectrometry proteomics project.

• LC-MS/MS Proteomics: Workflow, Principles, and Applications in Protein Analysis

Learn LC-MS/MS proteomics workflow, core principles, and applications in protein analysis, including bottom-up digestion, peptide LC, MS/MS identification, PTM mapping, and quantitation.