A qualitative molecular model of transcriptional regulation. mRNA encoding a transcription factor (TF) is translated to protein. The protein is activated and induces the transcription of a target gene at a certain rate (G). The final accumulation of G mRNA levels is determined by this transcription rate and by the rate of G's mRNA degradation.
Wang and Li BMC Systems Biology 2012 6(Suppl 1):S3 doi:10.1186/1752-0509-6-S1-S3