3.2.1.24 3 - 40% remaining activity 135970 3.2.1.24 3.3 5.5 50% activity at pH 3.3 and pH 5.5 135996 3.2.1.24 3.8 5.5 50% activity at pH 3.8 and pH 5.5 136007 3.2.1.24 4.5 - 45% remaining activity 135970 3.2.1.24 4.5 - instability below pH 4.5 729186 3.2.1.24 4.5 6 stable for 6 months at 4°C 136000 3.2.1.24 4.5 6.5 completely stable at 75°C for 24 h, slightly less stable in buffers at pH 4.5 135977 3.2.1.24 4.8 8 stable for 5 h at 20°C 135985 3.2.1.24 5 7 stable within 136020 3.2.1.24 5 8 stable within 136021 3.2.1.24 5.5 - activity lowered by 22% 135969 3.2.1.24 6 - 90% activity after 60 min at 37°C 135993 3.2.1.24 6 - activity is abolished above pH 6.0 678423 3.2.1.24 6 - stable for 1 h, 40% and 20% loss of activity at pH 4.0 and pH 8.0 135982 3.2.1.24 6 - unstable below 136011 3.2.1.24 6.3 6.8 most stable within 136009 3.2.1.24 6.5 10 stable within at 5°C 136019 3.2.1.24 6.8 - activity lowered by 27% 135969 3.2.1.24 7 7.5 30-64% remaining activity 135958 3.2.1.24 7 9 stable within 135988