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QS for synchronization of genetic oscillators. a A genetic relaxation oscillator consists of arsenite-responsive promoter, ArsR, lux QS system, and arsenite. b Coupling (i) genetic oscillators which includes promoter Plac/ara-1, lacI gene, arabinose and IPTG inducers and (ii) LuxI/LuxR type QS system to realize the synchronization by the ClpXP protease platform. c Genetic circuit diagrams of the activator with Rhl QS system and repressor strains with Cin QS system
