Effects of temperature on activities and stabilities of extracellular and intracellular catalases of <i>E. oxidotolerans</i> T-2-2^T.

Abstract

<p>(A) Effect of temperature on catalase activity. Extracellular and intracellular catalases are indicated by filled and open circles, respectively. <i>M</i>. <i>luteus</i> catalase, indicated by closed triangles, was used as a counterpart mesophilic enzyme. Catalase activity was assayed, as described in Materials and Methods, at the temperature indicated. (B) Temperature stability of catalase. Symbols are indicated as in (A). The enzyme was incubated for 15 min at the indicated temperatures prior to activity measurement. Catalase activity was assayed at 25°C as described in Materials and Methods.</p