1. Department of Laboratory Methods and Information Systems, Faculty of Health and Social Studies, University of South Bohemia, J. Boreckého 27, 370 11 České Budějovice, Czech Republic
2. Laboratoire ARN, RNP, structure-fonction-maturation, Enzymologie Moléculaire et Structurale (AREMS), UMR 7214 CNRS-UHP Nancy 1, Faculté des Sciences et Technologies, B.P. 70239, 54506 Vandoeuvre-lès-Nancy, France
3. Department of Applied Chemistry, Faculty of Agriculture, University of South Bohemia, Branišovská 31, 370 05, České Budějovice, Czech Republic