A researcher's guide to mass spectrometry-based proteomics

Area of Science:

• Analytical Chemistry
• Biophysics

Background:

• Mass spectrometry (MS) is a key tool for identifying and quantifying biomolecules like proteins.
• High-throughput liquid chromatography-MS/MS (LC-MS/MS) experiments are now common in proteomics.
• A gap exists between MS/proteomics experts and general biomedical researchers regarding underlying physical principles.

Purpose of the Study:

• To bridge the knowledge gap by translating mass spectrometry ion physics.
• To provide an intuitive explanation of MS principles for basic and applied biomedical researchers.
• To visually describe ion behavior within a mass spectrometer.

Main Methods:

• Visual descriptions of ion movement within mass spectrometers.
• Explanation of fundamental MS principles.
• Coverage of electric current, ion optics, ion traps, quadrupole mass filters, and Orbitrap FT-analyzers.

Main Results:

• A clear, visual explanation of ion physics in MS.
• Demystification of complex MS instrumentation for a broader audience.
• Accessible insights into the physio-chemical principles of MS.

Conclusions:

• Understanding MS ion physics enhances the interpretation of proteomics data.
• This work facilitates broader adoption and application of MS technology in biomedical research.
• Bridging the gap between technical expertise and data utilization is crucial for scientific advancement.