1. Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw 50-370, Poland
2. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
3. Omya International AG, Egerkingen 4622, Switzerland
4. Institute of Paleobiology, Polish Academy of Sciences, Warsaw 00-818, Poland