1. Department of Computing Science, University of Glasgow, Glasgow G12 8QQ, UK.
2. Signalling and Proteomics Laboratory, Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK.
3. Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland.
4. Sir Henry Wellcome Functional Genomics Facility, University of Glasgow, Glasgow G12 8QQ, UK.
5. Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.