Difference between revisions of "Part:BBa K389001"

Revision as of 12:22, 27 October 2010

VirA receptor

The VirA receptor of Agrobacterium tumefaciens

The VirA receptor is used by Agrobacterium tumefaciens to detect acetosyringone and other phenolic substances which are secreted by plants after injury. In presence of these substances VirA phosphorylates itself and afterwards VirG, a response regulator which activates vir promoters. These promoters control genes which are used for infecting the injured plant.

This virA gene was isolated from the TI-plasmid of A. tumefaciens C58. An illegal PstI restriction site was removed by site-directed mutagenesis.

Usage and Biology

For a working VirA/G-receptor system, you also need the virG BioBrick BBa_K389002 and a vir promoter BBa_K389003.

You can find an already assembled VirA/G-receptor system here: BBa_K389017.

Specifity

The functionality and specifity of this BioBrick were testet with the devices: BBa_K389015, BBa_K389016.

This receptor recognizes:

Acetosyringone

This receptor does not recognize

Capsaicin
Dopamine
Homovanillic acid
3-Methoxytyramine

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
INCOMPATIBLE WITH RFC[12]
Illegal NheI site found at 586
21
INCOMPATIBLE WITH RFC[21]
Illegal BglII site found at 1571
23
COMPATIBLE WITH RFC[23]
25
COMPATIBLE WITH RFC[25]
1000
INCOMPATIBLE WITH RFC[1000]
Illegal SapI.rc site found at 1707

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 __NOTOC__
 <partinfo>BBa_K389001 short</partinfo>
-[[Image:Vira_rezeptor.jpg|200px|thumb|right|The VirA receptor of ''Agrobacterium tumefaciens'']]
+[[Image:Vira_rezeptor.jpg|300px|thumb|right|The VirA receptor of ''Agrobacterium tumefaciens'']]
 The VirA receptor is used by ''Agrobacterium tumefaciens'' to detect acetosyringone and other phenolic substances which are secreted by plants after injury. In presence of these substances VirA phosphorylates itself and afterwards VirG, a response regulator which activates ''vir'' promoters. These promoters control genes which are used for infecting the injured plant.