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Disassembly of intact multiprotein complexes in the gas phase
1Oxford Centre for Molecular Sciences, South Parks Road, Oxford OX1 3QT, UK.
Current Opinion in Structural Biology
|February 27, 1999
Summary
Mass spectrometry can now observe intact multiprotein complexes without chemical cross-linking. This advance reveals subunit interactions and topology in large macromolecular assemblies.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Structural Biology
Background:
- Mass spectrometry traditionally required chemical cross-linking to study multiprotein complexes.
- Previous methods were limited in observing large, intact macromolecular assemblies.
Purpose of the Study:
- To describe recent technological advancements enabling the observation of intact macromolecular complexes.
- To highlight the utility of controlled dissociation in mass spectrometry for analyzing these complexes.
Main Methods:
- Observation of intact macromolecular complexes using mass spectrometry.
- Controlled dissociation of complexes within the mass spectrometer.
Main Results:
- Successful observation of intact multiprotein complexes without chemical modification.
- Analysis of assemblies with masses significantly higher than previously measurable.
- Gained insights into subunit interactions and complex topology.
Conclusions:
- Technological advances allow for the study of intact macromolecular complexes via mass spectrometry.
- Controlled dissociation provides a powerful method for elucidating the structure and interactions within these large assemblies.