1. Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
2. Genome Atlantic, Dalhousie University, 5859 University Avenue, Halifax, Nova Scotia B3H 4H7, Canada
3. Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
4. Department of Microbiology, Institute of Biology, Sølvgade 83H, DK 1307, Copenhagen K, Denmark