1.14.14.9 -20°C, HpaC, small protein, very stable, no significant loss of activity during 2 months 1.14.14.9 -20°C, stable for at least 5 months 1.14.14.9 4°C, 15-20 days 1.14.14.9 4°C, 20 mM phosphate buffer, pH 8.0, concentrated with polyethylene glycol 20000