1.11.1.10 additional information - immobilization of the enzyme on silica gel enhances the stability with respect to the effect of pH and oxidizing agent concentrations 659741 1.11.1.10 additional information - two enzymatically inactive forms obtained at pH‘s above 7. The first alkaline form obtained between pH 7 and pH 11 is the ferric analog of the ferrous P-420 species. The second alkaline form obtained above pH 11 appears to be a species in which irreversible denaturation has commenced 348313 1.11.1.10 1.5 - 4°C, stable for several h 348317 1.11.1.10 2.5 6 at pH 2.75 it loses 85% activity in 1 h, and it is completely inactivated in 24 h. At pH 4.4, the enzyme also loses activity with time and is completely inactivated after 2.5 h. However, the enzyme exposed to pH 6.0 has low activity but it remains constant for 24 h 725151 1.11.1.10 2.8 6 25°C, 24 h, immobilized and soluble enzyme are stable 659741 1.11.1.10 3 6.5 4°C, in presence of 0.1 M fluoride, stable for several days 348317 1.11.1.10 5 - native CPO and chemically modified CPOs, almost completely stable at room temperature for 3 days 743705 1.11.1.10 5 5.8 - 696905 1.11.1.10 5 6.5 at pH 6.5 the soluble enzyme retains about 70% of initial activity after 3 days of incubation, while at both pH 6.0 and 5.0 the enzyme retains more than 95% 725740 1.11.1.10 7 - 25°C, 24 h, about 50% loss of activity of soluble enzyme, about 40% loss of activity of immobilized enzyme 659741 1.11.1.10 7 - native CPO, half-live 5 h. For CPO modified by carbodiimide, ethanolamine and periodate oxidized CPO, half lives are 2.1- and 1.5fold improved 743705 1.11.1.10 7.6 - after 1 h: 50% residual ativity for cross-linked enzyme aggregates, complete inactivation of free enzyme 695425