Fig. 2
From: Computational analysis of viable parameter regions in models of synthetic biological systems
The schematics of biological repressilator, AC-DC circuit and proposed D flip-flop in a master-slave configuration. Figure (a) displays the schematic diagram of a repressilator. Proteins X, Y and Z in a negative feedback loop inhibit adjacent proteins. Figure (b) displays the design of AC-DC circuit. Mutual inhibition of X and Y can produce bistable behavior. Figure (c) displays the schematic of proposed biological D flip-flop in a master-slave configuration, where CLK is the synchronization signal and d is the input. Proteins a and ac represent the master segment of the flip-flop, whereas q and qc represent the slave segment