1. Institute of Biology and Environmental
Sciences, Biochemistry Group, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, D-26111 Oldenburg, Germany
2. Department of Life Sciences
and Reproduction, Section of Biological Chemistry, University of Verona, Strada le Grazie 8, 37143 Verona, Italy
3. Department of Biochemistry, Centre
for Molecular Protein Science, Chemical Centre, Lund University, P.O. Box 124, SE-22100 Lund, Sweden