3.4.11.5 4.5 9.5 - 664354 3.4.11.5 5 8 highest stability found between pH 6 an 7 666365 3.4.11.5 5 8 purified native enzyme, about, over 80% activity remaining 753839 3.4.11.5 5 9 - 683184 3.4.11.5 6 10 purified recombinant enzyme expressed in Pichia pastoris, 50°C, 60% activity remaining after 6 h 755659 3.4.11.5 6 11 purified recombinant His-tagged enzyme, stable within this range 752529 3.4.11.5 6.5 7.5 - 35946 3.4.11.5 6.5 8 overnight at 4°C 35947 3.4.11.5 7.25 9 - 35945