Bacterial Quorum Sensing relies on the synthesis, secretion, and detection of autoinducers to regulate gene expression in response to cell density. The small chemical signals are synthesized intracellularly which diffuse into the environment by active or passive transport. After attaining a threshold concentration, the chemical signals bind to their cognate receptors and trigger gene expression cascades that bring about specific changes in the population behavior.
What is the precise threshold concentration (in mM or any other units), which triggers the QS signaling cascades?
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