Department of Computer Science School of Biological Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.|Department of Computer Science School of Biological Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.|Department of Computer Science School of Biological Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.|Department of Computer Science School of Biological Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.