Published in
Wiley, Angewandte Chemie International Edition, 38(51), p. 9552-9556, 2012
Wiley, Angewandte Chemie, 38(124), p. 9690-9694, 2012
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Structure and Charge-State Dependence of the Gas-Phase Ionization Energy of Proteins.
,
Aleksandar R. Milosavljević,
Konrad Hinsen,
Francis Canon,
Christophe Nicolas,
Matthieu Réfrégiers,
Laurent Nahon
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Abstract
Photoionization of protein ions: The ionization energy of polyprotonated protein cations in the gas phase measured using VUV synchrotron radiation appears to be correlated with the charge state z of the protein and its tertiary structure. A simple electrostatic model accounts for the results and also shows predictive capabilities to derive a mean radius R(m) of the protein ion from the ionization energy, and vice versa.