Before revision:  By a combination of mean-field theory and computer simulation of these models we establish the conditions under which increasing rate of initiation of transcription of one gene can switch off another. However, the mechanisms of switching observed in the traffic of phage-RNAP and non-phage RNAP motors are different. Some of our new predictions can be tested experimentally by correlating the rate of RNA synthesis with the RNAP footprints on the respective DNA templates .
After revision:  By a combination of mean-field theory and computer simulation of these models we demonstrate how the flux of one species of rods is completely switched off by the other. Exploring the parameter space of the model we also establish the conditions under which switch-like regulation of two fluxes is possible; from the extensive analysis we discover more than one possible mechanism of this phenomenon .