A Calibration Routine for Efficient ETD in Large-Scale Proteomics
| Autor: | Christopher M. Rose, Matthew J. P. Rush, Joshua J. Coon, Christopher Mullen, Michael S. Westphall, Anna E. Merrill, Dustin D. Holden, Nicholas M. Riley, Nicholas W. Kwiecien |
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| Rok vydání: | 2015 |
| Předmět: |
Proteomics
Chemistry business.industry User knowledge Scale (chemistry) Ion yield Analytical chemistry Orbitrap Article law.invention Reduction (complexity) Electron-transfer dissociation Kinetics Tandem Mass Spectrometry Structural Biology law Calibration Peptides Process engineering business Spectroscopy |
| Zdroj: | Journal of the American Society for Mass Spectrometry. 26:1848-1857 |
| ISSN: | 1044-0305 |
| DOI: | 10.1007/s13361-015-1183-1 |
| Popis: | Electron transfer dissociation (ETD) has been broadly adopted and is now available on a variety of commercial mass spectrometers. Unlike collisional activation techniques, optimal performance of ETD requires considerable user knowledge and input. ETD reaction duration is one key parameter that can greatly influence spectral quality and overall experiment outcome. We describe a calibration routine that determines the correct number of reagent anions necessary to reach a defined ETD reaction rate. Implementation of this automated calibration routine on two hybrid Orbitrap platforms illustrate considerable advantages, namely, increased product ion yield with concomitant reduction in scan rates netting up to 75% more unique peptide identifications in a shotgun experiment. Graphical Abstract ᅟ. |
| Databáze: | OpenAIRE |
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