Book Synopsis The Use of Infrared Multiple Photon Dissociation and Fourier Transform Ion Cyclotron Resonance Mass Spectrometry to Study the Thermochemical Dynamics of Dephosphorylation and the Spectral and Density Functional Theory Determined Structural Characteristics of Monosaccharide Isomers by :
Download or read book The Use of Infrared Multiple Photon Dissociation and Fourier Transform Ion Cyclotron Resonance Mass Spectrometry to Study the Thermochemical Dynamics of Dephosphorylation and the Spectral and Density Functional Theory Determined Structural Characteristics of Monosaccharide Isomers written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Photon (vibrationally resonant) induced dissociation or action spectra, spanning the C-H-and O-H stretch regions, were then acquired for four rubidium cation-bound glycosides. Comparison of the experimental and Density Functional Theory calculated spectra revealed a network of intermolecular hydrogen bonding and rubidium attachments that provided the means to differentiate D-glucoside and D-galactoside anomers in the O-H stretching region of the infrared spectrum. In the second project, two cw-CO2 lasers were also set up for gas-phase experiments. Dephosphorylation rate constants (at varying laser powers) were obtained for both positively and negatively charged phosphopeptide ions at three different wavelengths. In these experiments, the dissociation rate constants favored the negatively charged species at all wavelengths (a result of lower activation energies) as the overall Arrhenius activation energies were independent of vibrational mode intensities.
