Quorum Sensing

Quorum Sensing

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Quorum sensing is a phenomenon defined as gene regulation in response to cell density. The accumulation of 'signaling' molecules in the surrounding environment enable a single cell to sense the number of bacteria (cell density), so that the population as a whole can make a coordinated response. This often leads to auto induction of the signal, and so a rapid increase of signal concentration in the surrounding environment is observed. At critical cell densities, the binding of a regulator protein to the signal leads to the switch on of genes controlled by quorum sensing and, therefore, a coordi...