View source for 3d04

==Crystal structure of (3R)-Hydroxyacyl-Acyl Carrier Protein Dehydratase (FabZ) from Helicobacter pylori in complex with sakuranetin==
<StructureSection load='3d04' size='340' side='right' caption='[[3d04]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3d04]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_43504 Atcc 43504]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3D04 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3D04 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BEN:BENZAMIDINE'>BEN</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=SAK:(2S)-5-HYDROXY-2-(4-HYDROXYPHENYL)-7-METHOXY-2,3-DIHYDRO-4H-CHROMEN-4-ONE'>SAK</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2gll|2gll]], [[3cf8|3cf8]], [[3cf9|3cf9]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">fabZ ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=210 ATCC 43504])</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=3d04 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d04 OCA], [http://pdbe.org/3d04 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3d04 RCSB], [http://www.ebi.ac.uk/pdbsum/3d04 PDBsum]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/Q5G940_HELPX Q5G940_HELPX]] Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs.[HAMAP-Rule:MF_00406]  Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs (By similarity).[SAAS:SAAS00205551] 
== 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/d0/3d04_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=3d04 ConSurf].
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== Publication Abstract from PubMed ==
Flavonoids are the major functional components of many herbal and insect preparations and demonstrate varied pharmacological functions including antibacterial activity. Here by enzymatic assay and crystal structure analysis, we studied the inhibition of three flavonoids (quercetin, apigenin, and (S)-sakuranetin) against the beta-hydroxyacyl-acyl carrier protein dehydratase from Helicobacter pylori (HpFabZ). These three flavonoids are all competitive inhibitors against HpFabZ by either binding to the entrance of substrate tunnel B (binding model A) or plugging into the tunnel C near the catalytic residues (binding model B) mainly by hydrophobic interaction and hydrogen-bond pattern. Surrounded by hydrophobic residues of HpFabZ at both positions of models A and B, the methoxy group at C-7 of (S)-sakuranetin seems to play an important role for the inhibitor's binding to HpFabZ, partly responsible for the higher inhibitory activity of (S)-sakuranetin than those of quercetin and apigenin against HpFabZ (IC(50) in microM: (S)-sakuranetin, 2.0 +/- 0.1; quercetin: 39.3 +/- 2.7; apigenin, 11.0 +/- 2.5). Our work is expected to supply useful information for understanding the potential antibacterial mechanism of flavonoids.

Three flavonoids targeting the beta-hydroxyacyl-acyl carrier protein dehydratase from Helicobacter pylori: crystal structure characterization with enzymatic inhibition assay.,Zhang L, Kong Y, Wu D, Zhang H, Wu J, Chen J, Ding J, Hu L, Jiang H, Shen X Protein Sci. 2008 Nov;17(11):1971-8. Epub 2008 Sep 9. PMID:18780820<ref>PMID:18780820</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 3d04" style="background-color:#fffaf0;"></div>

==See Also==
*[[Beta-hydroxyacyl-acyl carrier protein dehydratase|Beta-hydroxyacyl-acyl carrier protein dehydratase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Atcc 43504]]
[[Category: Jiang, H]]
[[Category: Kong, Y]]
[[Category: Shen, X]]
[[Category: Wu, D]]
[[Category: Zhang, L]]
[[Category: Fabz complex]]
[[Category: Lyase]]
[[Category: Sakuranetin]]