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. 2018 Aug 2;7(3):69. doi: 10.3390/antibiotics7030069

Figure 4.

Figure 4

Silver efflux system found in Gram-negative silver-resistant bacteria. SilE is a periplasmic, histidine-rich Ag+ binding protein; SilS belongs to a two-component (SilRS) transcription regulation system; SilA, SilB, and SilC comprise a three-component chemiosmotic bacterial proton/cation antiporter.