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Fig. 3 | SpringerPlus

Fig. 3

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

Fig. 3

The thermostability of purified SOD Ss (a) and rSOD Ss (b) at 90–100 °C and the thermostability of SOD Ss and rSOD Ss at 105 °C (c). The enzymes were pre-incubated at various temperatures (90–105 °C, in increments of 5 °C), and aliquots were periodically withdrawn to test for residual activity using the standard assay described in the “Methods”. The activity of unheated SOD was defined as 100 %. Each point represents the mean (n = 3) ± the standard deviation

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