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| | ==Crystal Structure Analysis of the N-terminal Receiver domain of Response Regulator PmrA== | | ==Crystal Structure Analysis of the N-terminal Receiver domain of Response Regulator PmrA== |
| - | <StructureSection load='3w9s' size='340' side='right' caption='[[3w9s]], [[Resolution|resolution]] 1.70Å' scene=''> | + | <StructureSection load='3w9s' size='340' side='right'caption='[[3w9s]], [[Resolution|resolution]] 1.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3w9s]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Klebsiella_pneumoniae_ntuh-k2044 Klebsiella pneumoniae ntuh-k2044]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3W9S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3W9S FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3w9s]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Klebsiella_pneumoniae_subsp._pneumoniae_NTUH-K2044 Klebsiella pneumoniae subsp. pneumoniae NTUH-K2044]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3W9S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3W9S FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KP1_1760 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=484021 Klebsiella pneumoniae NTUH-K2044])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3w9s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3w9s OCA], [http://pdbe.org/3w9s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3w9s RCSB], [http://www.ebi.ac.uk/pdbsum/3w9s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3w9s ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3w9s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3w9s OCA], [https://pdbe.org/3w9s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3w9s RCSB], [https://www.ebi.ac.uk/pdbsum/3w9s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3w9s ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Klebsiella pneumoniae ntuh-k2044]] | + | [[Category: Klebsiella pneumoniae subsp. pneumoniae NTUH-K2044]] |
| - | [[Category: Chen, C]] | + | [[Category: Large Structures]] |
| - | [[Category: Luo, S]] | + | [[Category: Chen C]] |
| - | [[Category: Alpha and beta protein]] | + | [[Category: Luo S]] |
| - | [[Category: Polymyxin b resistant protein some]]
| + | |
| - | [[Category: Response regulator]]
| + | |
| - | [[Category: Rossmann fold topology]]
| + | |
| - | [[Category: Signaling protein-antimicrobial protein complex]]
| + | |
| Structural highlights
Publication Abstract from PubMed
In bacteria, the two-component system is the most prevalent for sensing and transducing environmental signals into the cell. The PmrA-PmrB two-component system, responsible for sensing external stimuli of high Fe(3+) and mild acidic conditions, can control the genes involved in lipopolysaccharide modification and polymyxin resistance in pathogens. In Klebsiella pneumoniae, the small basic connector protein PmrD protects phospho-PmrA and prolongs the expression of PmrA-activated genes. We previously determined the phospho-PmrA recognition mode of PmrD. However, how PmrA interacts with PmrD and prevents its dephosphorylation remains unknown. To address this question, we solved the x-ray crystal structure of the N-terminal receiver domain of BeF3(-)-activated PmrA (PmrAN) at 1.70 A. With this structure, we applied the data-driven docking method based on NMR chemical shift perturbation to generate the complex model of PmrD-PmrAN, which was further validated by site-directed spin labeling experiments. In the complex model, PmrD may act as a blockade to prevent phosphatase from contacting with the phosphorylation site on PmrA.
Structural Basis of a Physical Blockage Mechanism for the Interaction of Response Regulator PmrA with Connector Protein PmrD from Klebsiella pneumoniae.,Luo SC, Lou YC, Rajasekaran M, Chang YW, Hsiao CD, Chen C J Biol Chem. 2013 Aug 30;288(35):25551-61. doi: 10.1074/jbc.M113.481978. Epub, 2013 Jul 16. PMID:23861396[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Luo SC, Lou YC, Rajasekaran M, Chang YW, Hsiao CD, Chen C. Structural Basis of a Physical Blockage Mechanism for the Interaction of Response Regulator PmrA with Connector Protein PmrD from Klebsiella pneumoniae. J Biol Chem. 2013 Aug 30;288(35):25551-61. doi: 10.1074/jbc.M113.481978. Epub, 2013 Jul 16. PMID:23861396 doi:10.1074/jbc.M113.481978
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