Fig. 1From: Hypothetical biomolecular probe based on a genetic switch with tunable symmetry and stabilitySchematic of asymmetric toggle switch. Promoter 1, D\(^{1}_{ab}\), is the promoter for Gene 1, which encodes a repressor with specific binding for Promoter 2. Promoter 2, D\(^{2}_{ab}\), is the promoter for Gene 2, which encodes a repressor with specific binding for Promoter 1. It may be possible to control the operation of the switch by the use of appropriate inducersBack to article page