1.12.98.4 60 - 100% activity for 30 min 1.12.98.4 70 - 73% loss of activity for 30 min 1.12.98.4 80 - 88% loss of activity for 30 min 1.12.98.4 90 - activity decreases with increasing temperatures above 90°C 1.12.98.4 100 - enzyme extremely thermostable 1.12.98.4 100 - below 85°C about 10% loss of activity