WspR: Difference between revisions
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[[C-di-GMP signaling| | <StructureSection load='2bre' size='450' side='right' scene='User:Tilman_Schirmer/Sandbox_204/Protomer/3' caption=''> | ||
[[C-di-GMP signaling|Back to C-di-GMP signaling]] | |||
== Overview == | == Overview == | ||
<scene name='User:Tilman_Schirmer/Sandbox_204/Protomer/3'>WspR </scene> from ''Pseudomonas aeruginosa'' is a response regulator with an catalytic, diguanylate cyclase, output domain. It is composed of a canonical CheY-like response regulator receiver domain (<scene name='User:Tilman_Schirmer/Sandbox_204/Rec/2'>Rec</scene>) and a C-terminal <scene name='User:Tilman_Schirmer/Sandbox_204/Ggdef/2'>catalytic GGDEF domain</scene> domain that confers the catalytic activity with all canonical <scene name='User:Tilman_Schirmer/Sandbox_204/Substrate_binding_site/2'>active site residues</scene> present. | <scene name='User:Tilman_Schirmer/Sandbox_204/Protomer/3'>WspR </scene> from ''Pseudomonas aeruginosa'' is a response regulator with an catalytic, diguanylate cyclase, output domain. It is composed of a canonical CheY-like response regulator receiver domain (<scene name='User:Tilman_Schirmer/Sandbox_204/Rec/2'>Rec</scene>) and a C-terminal <scene name='User:Tilman_Schirmer/Sandbox_204/Ggdef/2'>catalytic GGDEF domain</scene> domain that confers the catalytic activity with all canonical <scene name='User:Tilman_Schirmer/Sandbox_204/Substrate_binding_site/2'>active site residues</scene> present. | ||
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<br>Although not modified (i.e. phosphorylated) at the active Asp (<scene name='User:Tilman_Schirmer/Sandbox_204/Rec/4'>Asp70</scene>), the Rec domains mediate formation of <scene name='User:Tilman_Schirmer/Sandbox_204/Dimer/1'>dimeric </scene> WspR. Two dimers, in turn, are associated by head-to-head contact to a <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/1'>tetramer</scene> of approximate 222 (D2) symmetry. | <br>Although not modified (i.e. phosphorylated) at the active Asp (<scene name='User:Tilman_Schirmer/Sandbox_204/Rec/4'>Asp70</scene>), the Rec domains mediate formation of <scene name='User:Tilman_Schirmer/Sandbox_204/Dimer/1'>dimeric </scene> WspR. Two dimers, in turn, are associated by head-to-head contact to a <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/1'>tetramer</scene> of approximate 222 (D2) symmetry. | ||
<br> | |||
== Allosteric product binding site == | |||
<scene name='User:Tilman_Schirmer/Sandbox_204/Ip/3'>WspR</scene> ([3bre]]) | |||
< | |||
There are two allosteric sites (<scene name='User:Tilman_Schirmer/Sandbox_204/Ip/3'>primary inhibition site, Ip,</scene> and <scene name='User:Tilman_Schirmer/Sandbox_204/Is/3'>secondary inhibition site, Is</scene>) that become cross-linked by (c-di-GMP)<sub>2</sub> dimers in the <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/5'>tetrameric</scene> molecule. For a close-up click <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/4'>here</scene> (<scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/6'>Ip-site</scene>, <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/8'>Is-site</scene>, <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/9'>(c-di-GMP dimer)2</scene>). Note that there are four (c-di-GMP)<sub>2</sub> dimers per WspR tetramer. | There are two allosteric sites (<scene name='User:Tilman_Schirmer/Sandbox_204/Ip/3'>primary inhibition site, Ip,</scene> and <scene name='User:Tilman_Schirmer/Sandbox_204/Is/3'>secondary inhibition site, Is</scene>) that become cross-linked by (c-di-GMP)<sub>2</sub> dimers in the <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/5'>tetrameric</scene> molecule. For a close-up click <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/4'>here</scene> (<scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/6'>Ip-site</scene>, <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/8'>Is-site</scene>, <scene name='User:Tilman_Schirmer/Sandbox_204/Tetramer/9'>(c-di-GMP dimer)2</scene>). Note that there are four (c-di-GMP)<sub>2</sub> dimers per WspR tetramer. | ||
</StructureSection> | |||
< | __NOTOC__ | ||
==3D structures of response regulator== | ==3D structures of response regulator== | ||
Revision as of 11:44, 16 July 2013
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3D structures of response regulator
References
WspR structure 3bre:
- De N, Pirruccello M, Krasteva PV, Bae N, Raghavan RV, Sondermann H. Phosphorylation-independent regulation of the diguanylate cyclase WspR. PLoS Biol. 2008 Mar 25;6(3):e67. PMID:18366254 doi:10.1371/journal.pbio.0060067
