View source for 4fdn


==Mycobacterium tuberculosis DprE1 in complex with CT325 - hexagonal crystal form==
<StructureSection load='4fdn' size='340' side='right'caption='[[4fdn]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4fdn]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FDN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FDN 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]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0T4:3-(HYDROXYAMINO)-N-[(1R)-1-PHENYLETHYL]-5-(TRIFLUOROMETHYL)BENZAMIDE'>0T4</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</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=4fdn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fdn OCA], [https://pdbe.org/4fdn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fdn RCSB], [https://www.ebi.ac.uk/pdbsum/4fdn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fdn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DPRE1_MYCTU DPRE1_MYCTU] Involved in the epimerization of decaprenylphosphoryl ribose (DPR) to decaprenylphosphoryl arabinose (DPA) a precursor for arabinan synthesis in mycobacterial cell wall biosynthesis. Probably catalyzes the oxidation at C-2 of decaprenylphosphoryl ribose (DPR) to yield decaprenylphosphoryl 2-keto-ribose (DPX).<ref>PMID:16291675</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Resistance against currently used antitubercular therapeutics increasingly undermines efforts to contain the worldwide tuberculosis (TB) epidemic. Recently, benzothiazinone (BTZ) inhibitors have shown nanomolar potency against both drug-susceptible and multidrug-resistant strains of the tubercle bacillus. However, their proposed mode of action is lacking structural evidence. We report here the crystal structure of the BTZ target, FAD-containing oxidoreductase Mycobacterium tuberculosis DprE1, which is essential for viability. Different crystal forms of ligand-free DprE1 reveal considerable levels of structural flexibility of two surface loops that seem to govern accessibility of the active site. Structures of complexes with the BTZ-derived nitroso derivative CT325 reveal the mode of inhibitor binding, which includes a covalent link to conserved Cys387, and reveal a trifluoromethyl group as a second key determinant of interaction with the enzyme. Surprisingly, we find that a noncovalent complex was formed between DprE1 and CT319, which is structurally identical to CT325 except for an inert nitro group replacing the reactive nitroso group. This demonstrates that binding of BTZ-class inhibitors to DprE1 is not strictly dependent on formation of the covalent link to Cys387. On the basis of the structural and activity data, we propose that the complex of DrpE1 bound to CT325 is a representative of the BTZ-target complex. These results mark a significant step forward in the characterization of a key TB drug target.

Structural basis of inhibition of Mycobacterium tuberculosis DprE1 by benzothiazinone inhibitors.,Batt SM, Jabeen T, Bhowruth V, Quill L, Lund PA, Eggeling L, Alderwick LJ, Futterer K, Besra GS Proc Natl Acad Sci U S A. 2012 Jul 10;109(28):11354-9. Epub 2012 Jun 25. PMID:22733761<ref>PMID:22733761</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4fdn" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Batt SM]]
[[Category: Besra GS]]
[[Category: Futterer K]]