1. Centre of Fundamental and Frontier Science of Self-Assembly, Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
2. School of Information Systems Engineering, Osaka Sangyo University, 3-1-1 Nakagaito, Daito-Shi, Osaka 574-8530, Japan
3. Department of Biophysics, Max-Planck-Institut für Medizinische Forschung, Jahnstrasse 29, D-69120 Heidelberg, Germany