UV photodissociation of phospho-seryl-containing peptides: laser stabilization of the phospho-seryl bond with multistage mass spectrometry.

@article{Lemoine2006UVPO,
  title={UV photodissociation of phospho-seryl-containing peptides: laser stabilization of the phospho-seryl bond with multistage mass spectrometry.},
  author={J{\'e}r{\^o}me Lemoine and Thibault Tabarin and Rodolphe Antoine and Michel Broyer and Philippe Dugourd},
  journal={Rapid communications in mass spectrometry : RCM},
  year={2006},
  volume={20 3},
  pages={507-11}
}
Protonated precursor ions of phosphorylated peptides containing a tyrosyl residue have been subjected to UV laser-induced dissociation (LID) at a wavelength of 220 nm and to collision-induced dissociation (CID) in an ion trap. As expected, neutral loss of the phosphate group is one of the predominant fragmentation channels during CID together with H2O elimination. In contrast, LID leads mainly to the homolytic cleavage of the tyrosyl side chain and a restrained loss of the phosphate group… CONTINUE READING

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