Search for dissertations about: "Electron capture dissociation ECD"
Showing result 1 - 5 of 7 swedish dissertations containing the words Electron capture dissociation ECD.
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1. Characterization of Polypeptides by Tandem Mass Spectrometry Using Complementary Fragmentation Techniques
Abstract : In the growing field of proteomics identification of proteins by tandem mass spectrometry (MS/MS) is performed by matching experimental mass spectra against calculated spectra of all possible peptides in a protein database. One problem with this approach is the false-positive identifications. READ MORE
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2. Secondary and Higher Order Structural Characterization of Peptides and Proteins by Mass Spectrometry
Abstract : The work in this thesis has demonstrated the advantages and limitations of using MS based technologies in protein and peptide structural studies. Tandem MS, specifically electron capture dissociation (ECD) have shown the ability to provide structural insights in molecules containing the slightest of all modifications (D-AA substitution). READ MORE
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3. Analysis of Complex Biological Samples using Liquid Chromatography-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
Abstract : Studies of protein and peptide expression are vital in order to understand complex biological systems. As demonstrated in this thesis, on-line packed capillary liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry (LC-FTICR MS) is a useful analytical tool for such studies. READ MORE
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4. Strategies to explore the membrane proteome of a cell
Abstract : The cell envelope plays key roles in numerous processes such as maintaining cellular integrity, communication with other cells, signal transduction, maintenance of cellular homeostasis, and regulation of the traffic of molecules between the cell and the extracellular milieu. Essential membrane components in many of these processes are proteins. READ MORE
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5. New Proteomics Methods and Fundamental Aspects of Peptide Fragmentation
Abstract : The combination of collision-activated dissociation, (CAD) and electron capture dissociation, (ECD) yielded a 125% increase in protein identification. The S-score was developed for measuring the information content in MS/MS spectra. This measure made it possible to single out good quality spectra that were not identified by a search engine. READ MORE