View source for 6oyy


==Crystal structure of Mtb aspartate decarboxylase, pyrazinoic acid complex==
<StructureSection load='6oyy' size='340' side='right'caption='[[6oyy]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6oyy]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis_H37Rv Mycobacterium tuberculosis H37Rv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OYY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6OYY FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PYR:PYRUVIC+ACID'>PYR</scene>, <scene name='pdbligand=VGL:PYRAZINE-2-CARBOXYLIC+ACID'>VGL</scene></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=6oyy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6oyy OCA], [https://pdbe.org/6oyy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6oyy RCSB], [https://www.ebi.ac.uk/pdbsum/6oyy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6oyy ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PAND_MYCTU PAND_MYCTU] Catalyzes the pyruvoyl-dependent decarboxylation of aspartate to produce beta-alanine (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Pyrazinamide has been a mainstay in the multidrug regimens used to treat tuberculosis. It is active against the persistent, non-replicating mycobacteria responsible for the protracted therapy required to cure tuberculosis. Pyrazinamide is a pro-drug that is converted into pyrazinoic acid (POA) by pyrazinamidase, however, the exact target of the drug has been difficult to determine. Here we show the enzyme PanD binds POA in its active site in a manner consistent with competitive inhibition. The active site is not directly accessible to the inhibitor, suggesting the protein must undergo a conformational change to bind the inhibitor. This is consistent with the slow binding kinetics we determined for POA. Drug-resistant mutations cluster near loops that lay on top of the active site. These resistant mutants show reduced affinity and residence time of POA consistent with a model where resistance occurs by destabilizing the closed conformation of the active site.

The molecular basis of pyrazinamide activity on Mycobacterium tuberculosis PanD.,Sun Q, Li X, Perez LM, Shi W, Zhang Y, Sacchettini JC Nat Commun. 2020 Jan 17;11(1):339. doi: 10.1038/s41467-019-14238-3. PMID:31953389<ref>PMID:31953389</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6oyy" style="background-color:#fffaf0;"></div>

==See Also==
*[[Aspartate decarboxylase 3D structures|Aspartate decarboxylase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mycobacterium tuberculosis H37Rv]]
[[Category: Li X]]
[[Category: Sacchettini JC]]
[[Category: Sun Q]]