Fig. 1From: Using the promoters of MerR family proteins as “rheostats” to engineer whole-cell heavy metal biosensors with adjustable sensitivityPlasmids constructed in this study. (a) pMetalBasic, (b) pMetalRFP, (c) pMetalAMP, (d) pMetalMultiGFP. SP: Sensor Protein, SPBP: Sensor Protein Bind Promoter, kanaR: Kanamycin resistance gene, AMP: ampicillin resistance geneBack to article page