5jxp: Difference between revisions
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==Crystal structure of Porphyromonas endodontalis DPP11 in alternate conformation== | |||
<StructureSection load='5jxp' size='340' side='right' caption='[[5jxp]], [[Resolution|resolution]] 2.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5jxp]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5JXP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5JXP FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=5jxp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5jxp OCA], [http://pdbe.org/5jxp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5jxp RCSB], [http://www.ebi.ac.uk/pdbsum/5jxp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5jxp ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Porphyromonas gingivalis and Porphyromonas endodontalis are important bacteria related to periodontitis, the most common chronic inflammatory disease in humans worldwide. Its comorbidity with systemic diseases, such as type 2 diabetes, oral cancers and cardiovascular diseases, continues to generate considerable interest. Surprisingly, these two microorganisms do not ferment carbohydrates; rather they use proteinaceous substrates as carbon and energy sources. However, the underlying biochemical mechanisms of their energy metabolism remain unknown. Here, we show that dipeptidyl peptidase 11 (DPP11), a central metabolic enzyme in these bacteria, undergoes a conformational change upon peptide binding to distinguish substrates from end products. It binds substrates through an entropy-driven process and end products in an enthalpy-driven fashion. We show that increase in protein conformational entropy is the main-driving force for substrate binding via the unfolding of specific regions of the enzyme ("entropy reservoirs"). The relationship between our structural and thermodynamics data yields a distinct model for protein-protein interactions where protein conformational entropy modulates the binding free-energy. Further, our findings provide a framework for the structure-based design of specific DPP11 inhibitors. | |||
Bacterial protease uses distinct thermodynamic signatures for substrate recognition.,Bezerra GA, Ohara-Nemoto Y, Cornaciu I, Fedosyuk S, Hoffmann G, Round A, Marquez JA, Nemoto TK, Djinovic-Carugo K Sci Rep. 2017 Jun 6;7(1):2848. doi: 10.1038/s41598-017-03220-y. PMID:28588213<ref>PMID:28588213</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 5jxp" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bezerra, G A]] | |||
[[Category: Cornaciu, I]] | |||
[[Category: Djinovic-Carugo, K]] | |||
[[Category: Hoffmann, G]] | |||
[[Category: Marquez, J A]] | |||
[[Category: Bacterial enzyme]] | |||
[[Category: Hydrolase]] | |||
[[Category: Peptidase]] | |||
Revision as of 10:57, 3 August 2017
Crystal structure of Porphyromonas endodontalis DPP11 in alternate conformation
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