autoinducer

biochemistry

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July 21, 2026

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Autoinducers are molecules produced and secreted by bacteria that signal genetic expression within the same bacterial population. This process, known as quorum sensing, allows bacteria to communicate and coordinate group behaviors based on their population density. When autoinducers reach a threshold concentration, they trigger specific gene expressions, enabling bacteria to act in unison, similar to multicellular organisms. This coordinated action can regulate various behaviors, including the formation of biofilms and virulence in pathogens.123

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quorum sensing
The signal molecules, known as autoinducers, are secreted into the environment by bacteria and gradually increase in concentration as the bacteria population grows. After reaching a certain concentration threshold, the molecules become detectable to bacteria populations, which then activate corresponding response genes that regulate various behaviours, such as virulence, horizontal…
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The signal molecules, known as autoinducers, are secreted into the environment by bacteria and gradually increase in concentration as the bacteria population grows. After reaching a certain concentration threshold, the molecules become detectable to bacteria populations, which then activate corresponding response genes that regulate various behaviours, such as virulence, horizontal…
Read More