1. Mass Spectrometry
Laboratory, University of Liege, B6c Sart-Tilman, B-4000 Liege, Belgium
2. Center
for Education
and Research on Macromolecules, University of Liege, B6a Sart-Tilman, B-4000 Liege, Belgium
3. Center for Protein
Engineering, University of Liege, B6a Sart-Tilman, B-4000 Liege, Belgium