1. Malopolska Centre of Biotechnology, Jagiellonian University, Krakow 30-387, Poland
2. Postgraduate School of Molecular Medicine, Żwirki i Wigury 61, Warsaw 02-091, Poland
3. Department of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K.
4. Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, U.K.
5. Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747 AG, The Netherlands