1. Theoretical Molecular Biophysics; Department of Physics, Freie Universität Berlin, Arnimallee 14; Berlin D-14195 Germany
2. Division of Functional Genome Analysis; German Cancer Research Center (DKFZ) Heidelberg, Im Neuenheimer Feld 580; Heidelberg D-69120 Germany
3. Department of Biological Engineering; School of Environmental and Biological Engineering, Nanjing University of Science and Technology; Nanjing Jiangsu Province 210094 China