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==Structure of Transcriptional Regulatory Repressor Protein - EthR from Mycobacterium Tuberculosis in complex with compound GSK1107112A at 1.63A resolution==
<StructureSection load='5mxv' size='340' side='right'caption='[[5mxv]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5mxv]] is a 1 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=5MXV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5MXV 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]] 1.626&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K3T:3-chloranyl-~{N}-(4,5-dihydro-1,3-thiazol-2-yl)-6-fluoranyl-1-benzothiophene-2-carboxamide'>K3T</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=5mxv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5mxv OCA], [https://pdbe.org/5mxv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5mxv RCSB], [https://www.ebi.ac.uk/pdbsum/5mxv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5mxv ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ETHR_MYCTU ETHR_MYCTU] Involved in the repression of the monooxygenase EthA which is responsible of the formation of the active metabolite of ethionamide (ETH).<ref>PMID:10869356</ref> <ref>PMID:10944230</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Mycobacterium phenotypic hits are a good reservoir for new chemotypes for the treatment of tuberculosis. However, the absence of defined molecular targets and modes of action could lead to failure in drug development. Therefore, a combination of ligand-based and structure-based chemogenomic approaches followed by biophysical and biochemical validation have been used to identify targets for Mycobacterium tuberculosis phenotypic hits. Our approach identified EthR and InhA as targets for several hits, with some showing dual activity against these proteins. From the 35 predicted EthR inhibitors, eight exhibited an IC50 below 50 muM against M. tuberculosis EthR and three were confirmed to be also simultaneously active against InhA. Further hit validation was performed using X-ray crystallography yielding eight new crystal structures of EthR inhibitors. Although the EthR inhibitors attain their activity against M. tuberculosis by hitting yet undefined targets, these results provide new lead compounds that could be further developed to be used to potentiate the effect of EthA activated pro-drugs, such as ethionamide, thus enhancing their bactericidal effect.

Target Identification of Mycobacterium tuberculosis Phenotypic Hits Using a Concerted Chemogenomic, Biophysical, and Structural Approach.,Mugumbate G, Mendes V, Blaszczyk M, Sabbah M, Papadatos G, Lelievre J, Ballell L, Barros D, Abell C, Blundell TL, Overington JP Front Pharmacol. 2017 Sep 26;8:681. doi: 10.3389/fphar.2017.00681. eCollection, 2017. PMID:29018348<ref>PMID:29018348</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5mxv" style="background-color:#fffaf0;"></div>

==See Also==
*[[Tetracycline repressor protein 3D structures|Tetracycline repressor protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mycobacterium tuberculosis H37Rv]]
[[Category: Blaszczyk M]]
[[Category: Blundell TL]]
[[Category: Mendes V]]
[[Category: Mugumbate G]]