1. Enzymicals AG, Walther-Rathenau-Str.
49a, 17489 Greifswald, Germany
2. Institute
of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
3. Institute
of Chemistry, University of Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany