Affiliation: | 1. Max-Planck-Institut für Biochemie, D-8033 Martinsried bei München, FRG;2. Laboratory of Biochemistry, B.C.P. Jansen Institute, University of Amsterdam, Plantage Muidergracht 12, 1018 TV Amsterdam, The Netherlands;3. Department of Biophysics, University of Stockholm, Arrhenius Laboratory, S-106 91 Stockholm, Sweden |