These results were produced on a MD Grape-II system. This is a special hardware capable of performing molecular dynamics on a chip. The board is interfaced into the standard CHARMM program. Also note that this hardware can perform only no cutoff calculations. CHARMM: c28a4 (June 2001) FORTRAN: g77-2.96 C: gcc-2.96 LINUX: Linux-2.2.16-SMP DISTRIBUTION: RedHat-7.1 DATE: June 23, 2001 Compile opt: -malign-double -march=i686 -fschedule-insns2 -O2 \ -fno-backslash -fugly-complex -fno-globals -Wno-globals