Fig. 3From: Engineering a vitamin B12 high-throughput screening system by riboswitch sensor in Sinorhizobium melilotiFlow diagram of constructed VB12 riboswitches. The ideal phenotypes were selected from a VB12 riboswitch library. VB12 sensor constructs were made that contained a predicted riboswitch and a GFP reporter. The fermentation broth was collected and analyzed by Fluorescence Activated Cell SortingBack to article page