1. a Department of Biotechnology , Intercollegiate Faculty of Biotechnology University of Gdansk & Medical University of Gdansk , Kladki 24 , 80-822 Gdansk , Poland
2. b Expert Group for Molecular and Cellular Biology, Institute for Health, Environment and Safety SCK-CEN Belgian Nuclear Research Center Boeretang 200 , 2400 Mol , Belgium
3. c Centre for Protein Engineering, Institute of Chemistry B6, University of Liege , B-4000 Liege , Belgium
4. d Unité des Cyanobactéries, Institut Pasteur , CNRS-URA2172, 28 rue du Docteur Roux, 75724 Paris cedex 15 , France