View source for 3h26


==Structural Studies of Pterin-Based Inhibitors of Dihydropteroate Synthase==
<StructureSection load='3h26' size='340' side='right'caption='[[3h26]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3h26]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis_str._A2012 Bacillus anthracis str. A2012]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3H26 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3H26 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]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=B56:2-AMINO-8-METHYL-4-OXO-3,4,7,8-TETRAHYDROPTERIDINE-6-CARBOXYLIC+ACID'>B56</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=3h26 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3h26 OCA], [https://pdbe.org/3h26 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3h26 RCSB], [https://www.ebi.ac.uk/pdbsum/3h26 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3h26 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q81VW8_BACAN Q81VW8_BACAN] 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h2/3h26_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3h26 ConSurf].
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== Publication Abstract from PubMed ==
Dihydropteroate synthase (DHPS) is a key enzyme in bacterial folate synthesis and the target of the sulfonamide class of antibacterials. Resistance and toxicities associated with sulfonamides have led to a decrease in their clinical use. Compounds that bind to the pterin binding site of DHPS, as opposed to the p-amino benzoic acid (pABA) binding site targeted by the sulfonamide agents, are anticipated to bypass sulfonamide resistance. To identify such inhibitors and map the pterin binding pocket, we have performed virtual screening, synthetic, and structural studies using Bacillus anthracis DHPS. Several compounds with inhibitory activity have been identified, and crystal structures have been determined that show how the compounds engage the pterin site. The structural studies identify the key binding elements and have been used to generate a structure-activity based pharmacophore map that will facilitate the development of the next generation of DHPS inhibitors which specifically target the pterin site.

Structural Studies of Pterin-Based Inhibitors of Dihydropteroate Synthase.,Hevener KE, Yun MK, Qi J, Kerr ID, Babaoglu K, Hurdle JG, Balakrishna K, White SW, Lee RE J Med Chem. 2009 Nov 9. PMID:19899766<ref>PMID:19899766</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3h26" style="background-color:#fffaf0;"></div>

==See Also==
*[[Dihydropteroate synthase 3D structures|Dihydropteroate synthase 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Bacillus anthracis str. A2012]]
[[Category: Large Structures]]
[[Category: White SW]]
[[Category: Yun M-K]]