ArticleChemphyschem : a European journal of chemical physics and physical chemistry2025
A Direct Measurement of the Absolute Energies of Protonated Gly-Pro-Gly-Gly Conformations Using Ion Mobility Spectrometry and Guided Ion Beam Tandem Mass Spectrometry.
Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Threshold collision-induced dissociation of conformations selected by ion mobility spectrometry is described as a method to determine their absolute relative energies. Here, the method is demonstrated with the cis and trans conformers of the protonated tetrapeptide, Gly-Pro-Gly-Gly, which differ in the orientation of the peptide bond at the proline residue. The trans conformation was found to be more stable than the cis conformation by 4.5 ± 2.5 kJ mol
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