6azr
From Proteopedia
(Difference between revisions)
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of the T264A HK853cp-BeF3-RR468 complex== | |
| + | <StructureSection load='6azr' size='340' side='right' caption='[[6azr]], [[Resolution|resolution]] 3.63Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[6azr]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6AZR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6AZR FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=BFD:ASPARTATE+BERYLLIUM+TRIFLUORIDE'>BFD</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=6azr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6azr OCA], [http://pdbe.org/6azr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6azr RCSB], [http://www.ebi.ac.uk/pdbsum/6azr PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6azr ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Histidine kinases are key regulators in the bacterial two-component systems that mediate the cellular response to environmental changes. The vast majority of the sensor histidine kinases belong to the bifunctional HisKA family, displaying both kinase and phosphatase activities toward their substrates. The molecular mechanisms regulating the opposing activities of these enzymes are not well understood. Through a combined NMR and crystallographic study on the histidine kinase HK853 and its response regulator RR468 from Thermotoga maritima, here we report a pH-mediated conformational switch of HK853 that shuts off its phosphatase activity under acidic conditions. Such a pH-sensing mechanism is further demonstrated in the EnvZ-OmpR two-component system from Salmonella enterica in vitro and in vivo, which directly contributes to the bacterial infectivity. Our finding reveals a broadly conserved mechanism that regulates the phosphatase activity of the largest family of bifunctional histidine kinases in response to the change of environmental pH. | ||
| - | + | A pH-gated conformational switch regulates the phosphatase activity of bifunctional HisKA-family histidine kinases.,Liu Y, Rose J, Huang S, Hu Y, Wu Q, Wang D, Li C, Liu M, Zhou P, Jiang L Nat Commun. 2017 Dec 13;8(1):2104. doi: 10.1038/s41467-017-02310-9. PMID:29235472<ref>PMID:29235472</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 6azr" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Rose, J]] | ||
| + | [[Category: Zhou, P]] | ||
| + | [[Category: Kinase]] | ||
| + | [[Category: Phosphatase]] | ||
| + | [[Category: Response regulator]] | ||
| + | [[Category: Signaling protein]] | ||
| + | [[Category: Two-component system]] | ||
Revision as of 08:36, 27 December 2017
Crystal structure of the T264A HK853cp-BeF3-RR468 complex
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