3dhb: Difference between revisions

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{{Seed}}
[[Image:3dhb.png|left|200px]]


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==1.4 Angstrom Structure of N-Acyl Homoserine Lactone Hydrolase with the Product N-Hexanoyl-L-Homoserine Bound at The Catalytic Metal Center==
The line below this paragraph, containing "STRUCTURE_3dhb", creates the "Structure Box" on the page.
<StructureSection load='3dhb' size='340' side='right'caption='[[3dhb]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3dhb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_thuringiensis_serovar_kurstaki Bacillus thuringiensis serovar kurstaki]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DHB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DHB FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.4&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=C6L:N-HEXANOYL-L-HOMOSERINE'>C6L</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
{{STRUCTURE_3dhb|  PDB=3dhb  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3dhb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3dhb OCA], [https://pdbe.org/3dhb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3dhb RCSB], [https://www.ebi.ac.uk/pdbsum/3dhb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3dhb ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AHLLA_BACTK AHLLA_BACTK] Catalyzes hydrolysis of N-hexanoyl-(S)-homoserine lactone, but not the R-enantiomer. Hydrolyzes short- and long-chain N-acyl homoserine lactones with or without 3-oxo substitution at C3, has maximum activity on C10-AHL.<ref>PMID:16314577</ref>
== 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/dh/3dhb_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=3dhb ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Enzymes capable of hydrolyzing N-acyl- l-homoserine lactones (AHLs) used in some bacterial quorum-sensing pathways are of considerable interest for their ability to block undesirable phenotypes. Most known AHL hydrolases that catalyze ring opening (AHL lactonases) are members of the metallo-beta-lactamase enzyme superfamily and rely on a dinuclear zinc site for catalysis and stability. Here we report the three-dimensional structures of three product complexes formed with the AHL lactonase from Bacillus thuringiensis. Structures of the lactonase bound with two different concentrations of the ring-opened product of N-hexanoyl- l-homoserine lactone are determined at 0.95 and 1.4 A resolution and exhibit different product configurations. A structure of the ring-opened product of the non-natural N-hexanoyl- l-homocysteine thiolactone at 1.3 A resolution is also determined. On the basis of these product-bound structures, a substrate-binding model is presented that differs from previous proposals. Additionally, the proximity of the product to active-site residues and observed changes in protein conformation and metal coordination provide insight into the catalytic mechanism of this quorum-quenching metalloenzyme.


===1.4 Angstrom Structure of N-Acyl Homoserine Lactone Hydrolase with the Product N-Hexanoyl-L-Homoserine Bound at The Catalytic Metal Center===
Mechanism of the quorum-quenching lactonase (AiiA) from Bacillus thuringiensis. 1. Product-bound structures.,Liu D, Momb J, Thomas PW, Moulin A, Petsko GA, Fast W, Ringe D Biochemistry. 2008 Jul 22;47(29):7706-14. PMID:18627129<ref>PMID:18627129</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The line below this paragraph, {{ABSTRACT_PUBMED_18627129}}, adds the Publication Abstract to the page
<div class="pdbe-citations 3dhb" style="background-color:#fffaf0;"></div>
(as it appears on PubMed at http://www.pubmed.gov), where 18627129 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_18627129}}
__TOC__
 
</StructureSection>
==About this Structure==
3DHB is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_thuringiensis_serovar_kurstaki Bacillus thuringiensis serovar kurstaki]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DHB OCA].
 
==Reference==
<ref group="xtra">PMID:18627129</ref><references group="xtra"/>
[[Category: Bacillus thuringiensis serovar kurstaki]]
[[Category: Bacillus thuringiensis serovar kurstaki]]
[[Category: Fast, W.]]
[[Category: Large Structures]]
[[Category: Liu, D.]]
[[Category: Fast W]]
[[Category: Momb, J.]]
[[Category: Liu D]]
[[Category: Moulin, A.]]
[[Category: Momb J]]
[[Category: Petsko, G A.]]
[[Category: Moulin A]]
[[Category: Ringe, D.]]
[[Category: Petsko GA]]
[[Category: Thomas, P W.]]
[[Category: Ringe D]]
[[Category: Ahl lactonase]]
[[Category: Thomas PW]]
[[Category: Catalytic mechanism]]
[[Category: General acid]]
[[Category: N-acyl homoserine lactone]]
[[Category: Product complex]]
[[Category: Qourum quenching]]
[[Category: Zinc bimetallohydrolase]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Feb 17 01:25:46 2009''

Latest revision as of 12:47, 30 August 2023

1.4 Angstrom Structure of N-Acyl Homoserine Lactone Hydrolase with the Product N-Hexanoyl-L-Homoserine Bound at The Catalytic Metal Center

3dhb, resolution 1.40Å

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