RstC and RstR appear to form intracellular aggregates that prevent the repressor from binding to its operators.
For example, CarA of Myxococcus xanthus is a repressor of photoprotective carotenoid biosynthesis, and illumination results in the production of an anti-repressor which prevents CarA binding to its operator site [ 2].
In the first, the binding affinity of DnaA-ATP to its repressor sites decreases with increasing cell doubling time and in the second the RIDA rate increases with cell doubling time.
It further suppresses Oct4, by binding to it as a repressor [17].
However, when the inducer is added, this inducer will bind input repressor x repressor 2 and prevent it from binding to the repressor-regulated promoter-RBS component c3.
Allolactose is the inducer of the lac operon, binding to the lac repressor and inducing a conformational change that prevents the repressor from binding to the operator region.
Each gene features two binding sites for its repressor protein set so as to achieve cooperative binding, i.e. the binding affinity is larger when the gene is already bound to a single protein.
In the absence of β-catenin, TCF/Lef transcription proteins act as transcriptional repressors by binding to Groucho/TLE co-repressors.
Binding of positively charged SAM molecules is believed to promote binding of the repressor to its target DNA by a unique mechanism based primarily on long-range electrostatics transferred through the protein structure.
Moreover, we show that relevant mutations in the A.m.H GBD and CBD eliminate binding to the respective co-repressors.
