1. G.
B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-East Branch of the Russian Academy of Sciences, Vladivostok-22, Prospect 100-let, Vladivostok 159, Russia
2. Department
of Biological Science and Technology, Institute of Molecular Medicine
and Bioengineering, National Chiao Tung University, 75 Bo-Ai
Street, HsinChu 300, Taiwan