Design principles of cell circuits with paradoxical components

Design - principles of cell circuits with paradoxical components – Supporting Information

Design principles of cell circuits with paradoxical components.

Biological systems display complex networks of interactions both at the level of molecules inside the cell and at the level of interactions between cells. Networks of interacting molecules, such as transcription networks, have been shown to be composed of recurring circuits called network motifs, each with specific dynamical functions. Much less is known about the possibility of such circuit an...

Design principles of biological circuits

The utility of paradoxical components in biological circuits.

A recurring theme in biological circuits is the existence of components that are antagonistically bifunctional, in the sense that they simultaneously have two opposing effects on the same target or biological process. Examples include bifunctional enzymes that carry out two opposing reactions such as phosphorylating and dephosphorylating the same target, regulators that activate and also repres...

Design Principles of Transcriptional Logic Circuits

Using a set of genetic logic gates (AND, OR and XOR), we constructed a binary full-adder. The optimality analysis of the full-adder showed that, based on the position of the regulation threshold, the system displays different optimal configurations for speed and accuracy under fixed metabolic cost. In addition, the analysis identified an optimal trade-off curve bounded by these two optimal conf...