Abstract
Stored waveform inverse Fourier transform (SWIFT) technology has been implemented on a commercial Fourier transform ICR mass spectrometer. Complex ejection/isolation waveforms can be generated on an arbitrary waveform generator (AWG) and applied to the instrument by use of a high speed analog switch. High mass selectivity and subsequent electron capture dissociation (ECD) of the SWIFT isolated ions has been demonstrated with analysis of intact Bovine histone H4. A mass selectivity about 0.1 m/z unit for isolation of the 18+ charge state ions was achieved. Adaptation of SWIFT on the commercial instrument provides an enhanced capability for characterizing intact proteins by top-down analysis.
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Published online December 11, 2009
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Guan, S., Burlingame, A.L. High mass selectivity for top-down proteomics by application of SWIFT technology. J Am Soc Mass Spectrom 21, 455–459 (2010). https://doi.org/10.1016/j.jasms.2009.11.011
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DOI: https://doi.org/10.1016/j.jasms.2009.11.011