To learn more about quorum sensing in bacteria, check out this iBiology video lecture entitled, "Bacterial Communication via Quorum Sensing"
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Video content © 2015 - 2006 iBiology · CC BY-NC-ND 3.0 license Edit Summary
"N-Acylated L-homoserine lactones (AHLs), are the most common signal used by Gram-negative bacteria for cell–cell communication...the basic paradigm for Gram-negative QS: a signal is produced, binding of this signal to a receptor occurs at a threshold concentration, and this receptor complex then regulates (most commonly via activation) the transcription of genes that are involved in bacterial group processes...Over 50 species of Gram-negative bacteria have been shown to use AHLs in their QS signalling networks." (Geske et al. 2008:1434)