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Two-component phosphotransfer pathways
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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TWO-COMPONENT SENSING Two-component phosphotransfer pathways Bacteria are able to respond to changes within their environment. These changes could be as a result of the appearance of a bacterial attractant or repellent: the bacteria can respond by swimming towards or away from the source of attraction or repulsion in a process known as chemotaxis. Bacteria are also involved in processes such as osmotic sensing, oxygen sensing, and host recognition. All of these processes are able to occur due to the two-component systems that the bacteria have inbuilt within themselves. These two component systems are known as sensory systems; they give the bacteria the ability to sense and respond to stimuli in their environments. These sensory systems contain two conserved motifs; one termed the histidine kinase, and one known as the response regulator. A usual set up of these two-component systems is to have one protein which contains both the sensing domain and the...
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