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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The use of protein radical footprinting by Togni reagents in structural biology
 Fojtík, Lukáš ; Kukačka, Zdeněk (advisor) ; Kolenko, Petr (referee)
Structural proteomic methods such as an ion mobility mass spectrometry, chemical cross- linking or covalent labeling have been established as powerful tools for structural studies of biomolecules in general. These methods have significantly contributed to the expansion of our knowledge about biomolecular functions, their dynamics and molecular interactions and therefore led to the understanding of important biological processes occurring in a cell. We decided to spread these methods and we developed a new radical labeling technique relaying on Fluor-alkyl radicals that does not require a laser dissociation pf hydrogen peroxide. We exploited the potential of Togni reagents to form Fluor-alkyl radicals by reducing agent under native conditions. The induction of Fluor-alkyl radicals was triggered by ascorbic acid and the labeling pulse was stopped by tryptophan. The modified proteins were analyzed by top down or bottom up approach using high resolution mass spectrometry. In case of top down approach, several fragmentation techniques (CID-ECD, ETD) were tested for protein analysis while in case of bottom up approach the analyzed proteins were digested by trypsin and separated on reverse phase column online coupled to mass spectrometer. As the model biomolecules we chose a 20 proteinogenic amino acids...
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The use of protein radical footprinting by Togni reagents in structural biology
 Fojtík, Lukáš ; Kukačka, Zdeněk (advisor) ; Kolenko, Petr (referee)
Structural proteomic methods such as an ion mobility mass spectrometry, chemical cross- linking or covalent labeling have been established as powerful tools for structural studies of biomolecules in general. These methods have significantly contributed to the expansion of our knowledge about biomolecular functions, their dynamics and molecular interactions and therefore led to the understanding of important biological processes occurring in a cell. We decided to spread these methods and we developed a new radical labeling technique relaying on Fluor-alkyl radicals that does not require a laser dissociation pf hydrogen peroxide. We exploited the potential of Togni reagents to form Fluor-alkyl radicals by reducing agent under native conditions. The induction of Fluor-alkyl radicals was triggered by ascorbic acid and the labeling pulse was stopped by tryptophan. The modified proteins were analyzed by top down or bottom up approach using high resolution mass spectrometry. In case of top down approach, several fragmentation techniques (CID-ECD, ETD) were tested for protein analysis while in case of bottom up approach the analyzed proteins were digested by trypsin and separated on reverse phase column online coupled to mass spectrometer. As the model biomolecules we chose a 20 proteinogenic amino acids...
Detailed record

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