MALDI in-source photooxidation reactions for online peptide tagging

  • Liang Qiao*
  • , Christophe Roussel
  • , Jingjing Wan
  • , Jilie Kong
  • , Pengyuan Yang
  • , Hubert H. Girault
  • , Baohong Liu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

(Chemical Equation Presented) A TiO2 photoelectrode array has been designed to achieve efficient photoelectrochemical redox reactions with electron donors or acceptors during the laser desorption ionization process. By adding hydroquinone to a peptide mixture, the photoelectrochemically generated benzoquinone reacts with the cysteine residues to selectively form tagged cysteine-containing peptides, thus demonstrating that in-source oxidation reactions can be efficiently performed.

Original languageEnglish
Pages (from-to)2646-2648
Number of pages3
JournalAngewandte Chemie - International Edition
Volume47
Issue number14
DOIs
StatePublished - 25 Mar 2008
Externally publishedYes

Keywords

  • Mass spectrometry
  • Peptides
  • Photoelectrodes
  • Photooxidation
  • Titanium dioxide

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