Figure 3.

As an example of promoter structure, if all the transcription rates are precisely the same, then ${\log }_{10}\left({\eta }^2\right)$ vs. ${\log }_{10}F\left({\tau }_{ON},{\tau }_{OFF}\right)$ is located on a line and will deviate from the line otherwise. Here the abscissa represents the logarithm of the quantity $F\left({\tau }_{ON},{\tau }_{OFF}\right)$ computed according to Eq. 5, whereas the y axis represents the logarithm of the square of the promoter noise intensities computed by Eq. 7. Different symbols correspond to different promoter structures, whereas the same symbols correspond to different transition patterns with a fixed promoter state number and fixed transcription rates. The inset corresponds to the case without the logarithm. To see this figure in color, go online.