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Photoionization of a protein isolated in vacuo

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Milosavljević, Aleksandar R. | Nicolas, Christophe | Lemaire, Joël | Dehon, Christophe | Thissen, Roland | Bizau, Jean-Marc | Refregiers, Matthieu | Nahon, Laurent | Giuliani, Alexandre, A.

Edité par CCSD ; Royal Society of Chemistry -

International audience. Gas phase VUV single-photon photoionization spectroscopy of electrospray-produced multiply protonated cytochrome c protein ( 12 kDa) has been performed by means of coupling a linear quadrupole ion trap with a synchrotron beamline. The thresholds for the ionization of the 8+ and 11+ charge state precursors to radical 9+ and 12+ species were measured to be 12.75 +/- 0.10 and 13.51 +/- 0.10 eV, respectively.

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