1. Department
of Biophysics, University of P. J. Safarik, Kosice, Slovak Republic
2. Center
for Interdisciplinary Biosciences, University of P. J. Safarik, Kosice, Slovak Republic
3. Institute
of Biophysics, University of Veterinary Medicine and Pharmacy, Kosice, Slovak Republic
4. Department
of Biochemistry and Cell Biology, Rice University, Houston, Texas 77251-1892, United States