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. 2016 Nov 25;16:279. doi: 10.1186/s12866-016-0902-5

Fig. 6.

Fig. 6

The proposed model for Sb(III) bacterial oxidation in P. steutzeri TS44. In this study, i) the addition of Sb(III) would trigger the ROS-protective system by inducing the transcription of sodB, sodC and katE, with SodB and SodC catalyzing the conversion of ROS to H2O2, while KatE responsible for the degradation of excessive H2O2 (data not shown); ii) the increased cellular H2O2 content enhanced the Sb(III) oxidation rate; and iii) the addition of Sb(III) played a selection role on the characterization of gshA insertion; iv) in addition, the accumulated H2O2 is partially cosumed by the upregulated catalase KatE (data not shown)