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Fig. 2 | SpringerPlus

Fig. 2

From: Improving the thermostability and stress tolerance of an archaeon hyperthermophilic superoxide dismutase by fusion with a unique N-terminal domain

Fig. 2

Effects of temperature (a) and pH (b) on SOD activity. The optimal temperatures were determined by assaying the activity of purified SOD at temperatures ranging from 20 to 100 °C, and the optimal pH values were determined in buffers ranging from pH 3–10. The activity at the optimal temperature or pH was defined as 100 %. Each point represents the mean (n = 3) ± the standard deviation

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