2mj6
From Proteopedia
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| - | ''' | + | ==Solution structure of the extracellular sensor domain of DraK histidine kinase== |
| + | <StructureSection load='2mj6' size='340' side='right' caption='[[2mj6]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2mj6]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MJ6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MJ6 FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mj6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mj6 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2mj6 RCSB], [http://www.ebi.ac.uk/pdbsum/2mj6 PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The DraR/DraK two-component system was found to be involved in the differential regulation of antibiotic biosynthesis in a medium-dependent manner; however, its function and signaling and sensing mechanisms remain unclear. Here, we describe the solution structure of the extracellular sensor domain of DraK and suggest a mechanism for the pH-dependent conformational change of the protein. The structure contains a mixed alpha-beta fold, adopting a fold similar to the ubiquitous sensor domain of histidine kinase. A biophysical study demonstrates that the E83, E105, and E107 residues have abnormally high pKa values and that they drive the pH-dependent conformational change for the extracellular sensor domain of DraK. We found that a triple mutant (E83L/E105L/E107A) is pH independent and mimics the low pH structure. An in vivo study showed that DraK is essential for the recovery of the pH of Streptomyces coelicolor growth medium after acid shock. Our findings suggest that the DraR/DraK two-component system plays an important role in the pH regulation of S. coelicolor growth medium. This study provides a foundation for the regulation and the production of secondary metabolites in Streptomyces. | ||
| - | + | Mechanism of the pH-Induced Conformational Change in the Sensor Domain of the DraK Histidine Kinase via the E83, E105, and E107 Residues.,Yeo KJ, Hong YS, Jee JG, Lee JK, Kim HJ, Park JW, Kim EH, Hwang E, Kim SY, Lee EG, Kwon O, Cheong HK PLoS One. 2014 Sep 9;9(9):e107168. doi: 10.1371/journal.pone.0107168. eCollection, 2014. PMID:25203403<ref>PMID:25203403</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | == References == | |
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Cheong, H.]] | ||
| + | [[Category: Yeo, K.]] | ||
| + | [[Category: Drak]] | ||
| + | [[Category: Histidine kinase]] | ||
| + | [[Category: Transferase]] | ||
Revision as of 10:28, 24 September 2014
Solution structure of the extracellular sensor domain of DraK histidine kinase
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