1. Doublié, S., Tabor, S., Long, A. M., Richardson, C. C. & Ellenberger, T. Nature 391, 251–258 (1998).
2. Kiefer, J. R., Mao, C., Braman, J. C. & Beese, L. S. Nature 391, 304–307 (1998).
3. Steitz, T. A. Curr. Opin. Struct. Biol. 3, 31–38 (1993).
4. Pelletier, H., Sawaya, M. R., Kumar, A., Wilson, S. H. & Kraut, J. Science 264, 1891–1903 (1994).
5. Wang, J.et al. Cell 89, 1087–1099 (1997).