Protonation of the oxygen axial ligand in galactose oxidase model compounds as seen with high resolution X-ray emission experiments and FEFF simulations

A.E. Mijovilovich, Sylvain Hamman, Fabrice Thomas, Frank M. F. de Groot, Bert M. Weckhuysen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

X-ray Emission Spectroscopy (XES) crossover peaks were shown to be sensitive to the protonation state of solvent molecules in the Zn protein carbonic anhydrase and its model compounds. Here we extend such studies to galactose oxidase models i.e. Cu(II) open d-shell systems, illustrating that XES combined with FEFF8 simulations reflect changes in the protonation state of the phenolate ligand for the copper center.

Original languageEnglish
Pages (from-to)5600-5604
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number13
DOIs
Publication statusPublished - 2011

Keywords

  • ABSORPTION SPECTROSCOPY
  • HISTIDINE COMPLEXES
  • CARBOXYLATE BINDING
  • RALSTONIA-EUTROPHA
  • SITE
  • EDGE
  • HYDROGENASE
  • SPECTRA
  • XANES

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