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"Mass defect" tags for biomolecular mass spectrometry
Michael P Hall1, Siamak Ashrafi, Imad Obegi
1Target Discovery, Inc., 4015 Fabian Way, Palo Alto, CA 94303, USA. mike_hall@targetdiscovery.com
Journal of Mass Spectrometry : JMS
|August 26, 2003
Summary
New mass defect tags offer a novel method for biomolecular mass spectrometry. This technique enables rapid, unambiguous protein sequencing and identification using affordable mass spectrometers.
Area of Science:
- Biomolecular Mass Spectrometry
- Analytical Chemistry
- Proteomics
Background:
- Existing protein identification methods can be time-consuming and lack unambiguous results.
- High-resolution mass spectrometry is a powerful tool for molecular analysis.
Purpose of the Study:
- To introduce a novel class of mass defect tags for biomolecular analysis.
- To demonstrate the utility of these tags for rapid protein sequencing and identification.
Main Methods:
- Development of mass defect tags incorporating elements with atomic numbers between 17 (Cl) and 77 (Ir).
- Application of these tags in a new protein sequencing technique utilizing high-resolution mass spectrometry.
Main Results:
- Mass defect tags provide a resolvable mass difference between tagged and untagged biomolecules.
- The new protein sequencing technique allows for quick and unambiguous identification of intact proteins.
Conclusions:
- Mass defect tags represent a significant advancement in biomolecular mass spectrometry.
- This technology offers a cost-effective and efficient alternative for protein sequencing and has potential for broader applications in biomolecular analysis.