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Figure 10 | BMC Microbiology

Figure 10

From: Multidrug resistance protein MdtM adds to the repertoire of antiporters involved in alkaline pH homeostasis in Escherichia coli

Figure 10

Measurements of cytoplasmic pH. (A) Calibration plot that correlates the 490 nm/440 nm fluorescence emission ratio of BCECF-AM upon excitation at 530 nm to pH. (B) Intracellular pH of E. coli BW25113 ΔmdtM cells transformed with pMdtM or pD22A as a function of external alkaline pH. In both (A) and (B) the data points and error bars represent the mean ± SD of three independent measurements.

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