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Figures 3, 5–7, 40, 41 Voet, D. and Voet, J. G. (1995) Biochemistry, 2nd edn, copyright © 1995 John Wiley & Sons Inc

Figures 4, 8, 9a, 10, 14, 24, 25a,c Voet, D. and Voet, J. G. (1995) op. cit., illustration Irving Geis, rights owned by Howard Hughes Medical Institute, reproduced by permission

Figures 11b, 17, 18, 22, 28, 37, 50, 51 Alberts, B. et al. (2002) Molecular Biology of the Cell, 4th edn, Garland Science, Taylor and Francis Group

Figure 21c Dr Andreas Merdes, University of Edinburgh

Figure 29 Huse, M. and Kuriyan, J. (2002) ‘The conformational plasticity of protein kinases’, Cell, 109(3), copyright © 2002 Elsevier

Figure 30 Protein sequence data was obtained from the Swiss-Prot database

Figures 32a, 46 Stryer, L. (1981) Biochemistry, 2nd edn, W. H. Freeman & Co

Figure 32b Baldwin, J. and Chothia, C. (1979) Journal of Molecular Biology, 192, copyright © 1979 Academic Press Inc. (London) Ltd

Figure 53 Joanne Mathers, Dundee University

© Science Photo Library

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