1. Fromme, P., Gräber, P. and Salnikov, J. (1987) FEBS Lett. 218, 27–30.
2. Fromme, P., Boekema, E., and Gräber, P (1987) Z. Naturforsch. 42c, 1239–1245.
3. Seelert, H., Poetsch, A., Dencher, N.A., Engel, A., Stalberg, H. and Müller, D.J. (2000) Nature 405, 418–419. 226 Manuela O. Souza et al.
4. Richter, M. L., Hein, R., and Huchzermeyer, B. (2000) Biochim. Biophys. Acta 1458, 326–342.
5. Groth, G., and Pohl, E. (2001) J. Biol. Chem. 276, 1345–1352.