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Figure 4 | BMC Microbiology

Figure 4

From: Absence of functional TolC protein causes increased stress response gene expression in Sinorhizobium meliloti

Figure 4

Activity of enzymes combating oxidative stress. Enzymatic activities of (a) glutathione reductase as measured spectrophotometrically at 412 nm; (b) catalase and (c) superoxidase dismutase in native gel after staining. Total protein extracts were obtained after growing the wild-type strain Sm1021 and the tolC mutant strain SmLM030-2 for 20 hours in GMS medium. 20 μg of crude extract were loaded in each lane. Arrows indicate the position of bands obtained.

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