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Updated: May 12, 2026

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry
Published on: October 24, 2018
Intact protein mass spectrometry and top-down proteomics
1The Pasarow Mass Spectrometry Laboratory, UCLA, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Los Angeles, CA 90095, USA. jpw@chem.ucla.edu
Top-down mass spectrometry analyzes intact proteins for enhanced identification. Advances in instrumentation and informatics are driving this precision technology toward high-throughput proteomics applications.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Proteomics
Background:
- Top-down mass spectrometry analyzes intact proteins.
- It uses electrospray ionization and multiple charging for enhanced dissociation and identification.
- Traditionally low-throughput, it aims for high-throughput proteome analysis.
Purpose of the Study:
- To discuss advancements in top-down mass spectrometry.
- To explore its applicability across the proteome.
- To foster integration into mainstream high-throughput proteomics.
Main Methods:
- Analysis of intact proteins using mass spectrometry.
- Utilizing Fourier-transform ion cyclotron resonance and orbitrap analyzers.
- Employing advanced ionization, dissociation, and informatics strategies.
Main Results:
- Demonstrated viability and broad applicability of the top-down approach.
- Discussion of advances in instrumentation, ionization, dissociation, and informatics.
- Integration of diverse researchers with a common interest in top-down proteomics.
Conclusions:
- The future of top-down mass spectrometry is promising.
- Continued advancements are expected to drive high-throughput applications.
- Top-down proteomics is poised for mainstream adoption.
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