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. 2019 Jul 8;18:122. doi: 10.1186/s12934-019-1169-y

Fig. 4.

Fig. 4

a Effect of various metal ions on the relative activity of rAXE. The enzyme reaction was performed with final concentrations of 1 mM and 5 mM for each metal ion. The activity in the absence of a metal ion was taken as the control (100%). b Effect of NaCl on the relative activity and stability of rAXE. The activity at 0 M NaCl in the reaction mixture was taken as the control (100%). Data are presented as mean ± standard deviation (sd), n = 3