3b7j: Difference between revisions
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==Crystal structure of (3R)-Hydroxyacyl-Acyl Carrier Protein Dehydratase(FabZ) from Helicobacter pylori complexed with juglone== | |||
<StructureSection load='3b7j' size='340' side='right'caption='[[3b7j]], [[Resolution|resolution]] 2.40Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3b7j]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Helicobacter_pylori Helicobacter pylori]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B7J OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3B7J 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]] 2.4Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEN:BENZAMIDINE'>BEN</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=JUG:5-HYDROXYNAPHTHALENE-1,4-DIONE'>JUG</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=3b7j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b7j OCA], [https://pdbe.org/3b7j PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3b7j RCSB], [https://www.ebi.ac.uk/pdbsum/3b7j PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3b7j ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://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/b7/3b7j_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=3b7j ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
AIM: To investigate the inhibition features of the natural product juglone (5- hydroxy-1,4-naphthoquinone) against the three key enzymes from Helicobacter pylori (cystathionine gamma-synthase [HpCGS], malonyl-CoA:acyl carrier protein transacylase [HpFabD], and beta-hydroxyacyl-ACP dehydratase [HpFabZ]). METHODS: An enzyme inhibition assay against HpCGS was carried out by using a continuous coupled spectrophotometric assay approach. The inhibition assay of HpFabD was performed based on the alpha-ketoglutarate dehydrogenase-coupled system, while the inhibition assay for HpFabZ was monitored by detecting the decrease in absorbance at 260 nm with crotonoyl-CoA conversion to beta -hydroxybutyryl-CoA. The juglone/FabZ complex crystal was obtained by soaking juglone into the HpFabZ crystal, and the X-ray crystal structure of the complex was analyzed by molecular replacement approach. RESULTS: Juglone was shown to potently inhibit HpCGS, HpFabD, and HpFabZ with the half maximal inhibitory concentration IC50 values of 7.0 +/-0.7, 20 +/-1, and 30 +/-4 micromol/L, respectively. An inhibition-type study indicated that juglone was a non-competitive inhibitor of HpCGS against O-succinyl- L-homoserine (Ki=alphaKi=24 micromol/L), an uncompetitive inhibitor of HpFabD against malonyl-CoA (alphaKi=7.4 micromol/L), and a competitive inhibitor of HpFabZ against crotonoyl-CoA (Ki=6.8 micromol/L). Moreover, the crystal structure of the HpFabZ/juglone complex further revealed the essential binding pattern of juglone against HpFabZ at the atomic level. CONCLUSION: HpCGS, HpFabD, and HpFabZ are potential targets of juglone. | |||
Natural product juglone targets three key enzymes from Helicobacter pylori: inhibition assay with crystal structure characterization.,Kong YH, Zhang L, Yang ZY, Han C, Hu LH, Jiang HL, Shen X Acta Pharmacol Sin. 2008 Jul;29(7):870-6. PMID:18565285<ref>PMID:18565285</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3b7j" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
[[ | *[[Beta-hydroxyacyl-acyl carrier protein dehydratase 3D structures|Beta-hydroxyacyl-acyl carrier protein dehydratase 3D structures]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Helicobacter pylori]] | [[Category: Helicobacter pylori]] | ||
[[Category: Jiang | [[Category: Large Structures]] | ||
[[Category: Kong | [[Category: Jiang HL]] | ||
[[Category: Shen | [[Category: Kong YH]] | ||
[[Category: Wu | [[Category: Shen X]] | ||
[[Category: Zhang | [[Category: Wu D]] | ||
[[Category: Zhang L]] | |||