CIT can broadcast your seminar, conference or meeting live to a world-wide audience over the Internet
as a real-time streaming video. The event can be recorded and made available for viewers to watch at
their convenience as an on-demand video or a downloadable file. CIT can also broadcast NIH-only or HHS-only content.
Tiny Conspiracies: Cell-to-Cell Communication in Bacteria
Wednesday, March 10, 2004,
3:00:00 PM Time displayed is Eastern Time, Washington DC Local
Total views: 100 * This only includes stats from October 2011 and forward.
Quorum sensing, or the control of gene expression in response to cell density, is used by bacteria to regulate a variety of physiological functions. Quorum sensing bacteria produce, release and detect extracellular signalling molecules called autoinducers that accumulate in the environment as the cell population increases. In the bioluminescent marine bacterium V. harveyi, two parallel quorum sensing systems exist and function to control light production. System 1 is composed of Sensor 1 and Autoinducer-1 (AI-1), and System 2 is composed of Sensor 2 and Autoinducer-2 (AI-2). Our results suggest that V. harveyi uses AI-1 for intra-species communication and AI-2 for inter-species cell-cell signalling.