1. Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 5, 166 28 Praha 6, Czech Republic
2. Department of Biotechnology, University of Chemistry and Technology Prague, Technická 5, 166 28 Praha 6, Czech Republic
3. Institute of Molecular Genetics of the Czech Academy of Sciences, Vídeňská 1084, 142 20 Praha, Czech Republic
4. Institute of Inorganic Chemistry of the Czech Academy of Sciences, Řež 1001, 250 68 Husinec-Řež, Czech Republic