4.1.1.12 4 8.5 purified recombinant enzyme, 4°C, 1 day, completely stable 677736 4.1.1.12 5 - rapid loss of activity 3951 4.1.1.12 6 - irreversible inactivation below 3962 4.1.1.12 7 - 4°C, stable in concentrated solution 3951 4.1.1.12 10 - stable up to 3962