1. Department of Paper Science, University of Manchester Institute of Science and Technology, P.O. Box 88, Sackville Street, Manchester M60 lQD, U.K.
2. Department of Biochemistry, Physiology and Microbiology, University of Ghent, Ledeganckstraat 35, B-9000 Ghent, Belgium
3. Department of Biotechnology, Royal Institute of Technology, S-10044 Stockholm, Sweden
4. Department of Cell and Molecular Biology, Uppsala University, BMC, P.O. Box 596, SE-75124, Uppsala, Sweden
5. Röhm Enzyme Finland OY, PL 26, Tykkimäentie 15, FIN-05200 Rajamäki, Finland
6. VTT Biotechnology, P.O. Box 1500, FIN-02044 VTT, Espoo, Finland
7. Department of Molecular Biology, Swedish University of Agricultural Sciences, BMC, P.O. Box 590, SE-75124, Uppsala, Sweden