1. Institute of Microbiology, The Czech Academy of Sciences, Centre Algatech , Opatovický mlýn, Třeboň 37901, Czech Republic
2. Faculty of Science, University of South Bohemia , Branišovská 1760, České Budějovice 370 05, Czech Republic
3. Sir Ernst Chain Building-Wolfson Laboratories, Department of Life Sciences, Imperial College London , South Kensington Campus, London SW7 2AZ, UK