1. MRC Protein Phosphorylation Unit, University of Dundee, Dundee DD1 5EH, Scotland, U.K.
2. Division of Signal Transduction Therapy, College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, U.K.
3. Medical School Hannover, Institute of Biochemistry, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
4. Department of Biophysics and Biochemistry, S625A, The Anlyan Center, Yale University School of Medicine, 300 Cedar Street, New Haven, CT 06520, U.S.A.
5. University of Massachusetts Medical School, 373 Plantation Street, Suite 309, Worcester, MA 01605, U.S.A.
6. Department of Pharmacology, University of North Carolina School of Medicine, 1108 MEJ Building, Campus Box 7365, Chapel Hill, NC 27599-7365, U.S.A.