2.4.1.149 4 - 4% of activity compared with that at 37°C 638578 2.4.1.149 12 - 9% of activity compared with that at 37°C 638578 2.4.1.149 20 - 28% of activity compared with that at 37°C 638578 2.4.1.149 30 - 63% of activity compared with that at 37°C 638578 2.4.1.149 42 - 112% of activity compared with that at 37°C 638578 2.4.1.149 45 - 88% of activity compared with that at 37°C 638578 2.4.1.149 50 - 10% of activity compared with that at 37°C 638578 2.4.1.149 55 - 2% of activity compared with that at 37°C 638578