1. MRC Protein Phosphorylation Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
2. Division of Immune Cell Biology, National Institute for Medical Research, Mill Hill, London, NW7 1AA, UK
3. Division of Immunoregulation, National Institute for Medical Research, Mill Hill, London, NW7 1AA, UK
4. Division of Cell Biology and Immunology, College of Life Sciences, University of Dundee, Dow Street, Dundee, DD1 5EH, UK