1. Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna, Austria
2. Division of Archaea Biology and Ecogenomics, Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
3. Institute of Theoretical Chemistry, University of Vienna, Vienna, Austria
4. Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy