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Photochemical control of bacterial signal processing using a light-activated erythromycin.
Molecular BioSystems 2011 September
Bacterial cells control resistance to the macrolide antibiotic erythromycin using the MphR(A) repressor protein. Erythromycin binds to MphR(A), causing release of the PmphR promoter, activating expression of the 2'-phosphotransferase Mph(A). We engineered the MphR(A)/promoter system to, in conjunction with a light-activatable derivative of erythromycin, enable photochemical activation of gene expression in E. coli. We applied this photochemical gene switch to the construction of a light-triggered logic gate, a light-controlled band-pass filter, as well as spatial and temporal control of gene expression.
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