Difference between revisions of "Two-component systems"

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Two component systems are signal transduction systems that consist of a sensor kinase and a response regulator (usually a [[transcription factors|transcription factor]]). The kinase autophosphorylates on a His residue (more preciely, one subunit of the dimeric kinase phosphorylates the His residue of the other subunit), and the phosphate group can then be transferred to an aspartate residue in the cognate response regulator. Some response regulators can also autophosphorylate using acety-phosphate as the phosphate donor.
 
Two component systems are signal transduction systems that consist of a sensor kinase and a response regulator (usually a [[transcription factors|transcription factor]]). The kinase autophosphorylates on a His residue (more preciely, one subunit of the dimeric kinase phosphorylates the His residue of the other subunit), and the phosphate group can then be transferred to an aspartate residue in the cognate response regulator. Some response regulators can also autophosphorylate using acety-phosphate as the phosphate donor.
 
More complex signal transduction systems of this class are called [[phosphorelay]]. The paradigm for a [[phosphorelay]] is the pathway leading to the phosphorylation of [[Spo0A]].
 
More complex signal transduction systems of this class are called [[phosphorelay]]. The paradigm for a [[phosphorelay]] is the pathway leading to the phosphorylation of [[Spo0A]].
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==Reviews==
 
==Reviews==
&lt;pubmed>17338439 19575571 11406410 10966457 10932244 17158704 10094672 11489844 1664534 17433693 10745001  17913492 18832064 19943903 20117042 18076326 20080056 20133181 20133179 21051349 &lt;/pubmed>
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<pubmed>17338439 19575571 11406410 10966457 10932244 17158704 10094672 11489844 1664534 17433693 10745001  17913492 18832064 19943903 20117042 18076326 20080056 20133181 20133179 21051349 </pubmed>

Revision as of 09:34, 24 November 2010

Two component systems are signal transduction systems that consist of a sensor kinase and a response regulator (usually a transcription factor). The kinase autophosphorylates on a His residue (more preciely, one subunit of the dimeric kinase phosphorylates the His residue of the other subunit), and the phosphate group can then be transferred to an aspartate residue in the cognate response regulator. Some response regulators can also autophosphorylate using acety-phosphate as the phosphate donor. More complex signal transduction systems of this class are called phosphorelay. The paradigm for a phosphorelay is the pathway leading to the phosphorylation of Spo0A.

Two-component systems in B. subtilis (kinase, regulator)

  • Orphan response regulator

The phosphorelay

  • The ultimate target

Related lists

Reviews