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==CRYSTAL STRUCTURE OF STAPHLYOCOCCUS AUREUS 3-DEHYDROQUINATE SYNTHASE (DHQS) IN COMPLEX WITH ZN2+, NAD+ AND CARBAPHOSPHONATE== | ==CRYSTAL STRUCTURE OF STAPHLYOCOCCUS AUREUS 3-DEHYDROQUINATE SYNTHASE (DHQS) IN COMPLEX WITH ZN2+, NAD+ AND CARBAPHOSPHONATE== | ||
<StructureSection load='1xag' size='340' side='right' caption='[[1xag]], [[Resolution|resolution]] 2.45Å' scene=''> | <StructureSection load='1xag' size='340' side='right' caption='[[1xag]], [[Resolution|resolution]] 2.45Å' scene=''> | ||
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aroB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 "Micrococcus aureus" (Rosenbach 1884) Zopf 1885])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aroB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 "Micrococcus aureus" (Rosenbach 1884) Zopf 1885])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-dehydroquinate_synthase 3-dehydroquinate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.3.4 4.2.3.4] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-dehydroquinate_synthase 3-dehydroquinate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.3.4 4.2.3.4] </span></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=1xag FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xag OCA], [http://pdbe.org/1xag PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xag RCSB], [http://www.ebi.ac.uk/pdbsum/1xag PDBsum]</span></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=1xag FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xag OCA], [http://pdbe.org/1xag PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xag RCSB], [http://www.ebi.ac.uk/pdbsum/1xag PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1xag ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/xa/1xag_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/xa/1xag_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
Revision as of 10:35, 18 April 2018
CRYSTAL STRUCTURE OF STAPHLYOCOCCUS AUREUS 3-DEHYDROQUINATE SYNTHASE (DHQS) IN COMPLEX WITH ZN2+, NAD+ AND CARBAPHOSPHONATECRYSTAL STRUCTURE OF STAPHLYOCOCCUS AUREUS 3-DEHYDROQUINATE SYNTHASE (DHQS) IN COMPLEX WITH ZN2+, NAD+ AND CARBAPHOSPHONATE
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedDehydroquinate synthase (DHQS) is a potential target for the development of novel broad-spectrum antimicrobial drugs, active against both prokaryotes and lower eukaryotes. Structures have been reported for Aspergillus nidulans DHQS (AnDHQS) in complexes with a range of ligands. Analysis of these AnDHQS structures showed that a large-scale domain movement occurs during the normal catalytic cycle, with a complex series of structural elements propagating substrate binding-induced conformational changes away from the active site to distal locations. Compared to corresponding fungal enzymes, DHQS from bacterial species are both mono-functional and significantly smaller. We have therefore determined the structure of Staphylococcus aureus DHQS (SaDHQS) in five liganded states, allowing comparison of ligand-induced conformational changes and mechanisms of domain closure between fungal and bacterial enzymes. This comparative analysis shows that substrate binding initiates a large-scale domain closure in both species' DHQS and that the active site stereochemistry, of the catalytically competent closed-form enzyme thus produced, is also highly conserved. However, comparison of AnDHQS and SaDHQS open-form structures, and analysis of the putative dynamic processes by which the transition to the closed-form states are made, shows a far lower degree of similarity, indicating a significant structural divergence. As a result, both the nature of the propagation of conformational change and the mechanical systems involved in this propagation are quite different between the DHQSs from the two species. Comparison of ligand-induced conformational changes and domain closure mechanisms, between prokaryotic and eukaryotic dehydroquinate synthases.,Nichols CE, Ren J, Leslie K, Dhaliwal B, Lockyer M, Charles I, Hawkins AR, Stammers DK J Mol Biol. 2004 Oct 22;343(3):533-46. PMID:15465043[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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