1. 1Microbial Genomics and Metagenomic Super Program, Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
2. 2Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
3. 3The MITRE Corporation, MA, USA
4. 4Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
5. 5University of Oxford, Oxford e-Research Centre, Oxford, UK
6. 6European Molecular Biology Laboratory (EMBL) Outstation, European Bioinformatics Institute (EBI), Wellcome Trust Genome Campus, Cambridge, UK
7. 7Centre for Ecology & Hydrology, Wallingford, Oxfordshire, UK