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Crystal Structure and Catalytic Mechanism of the Quorum-Quenching N- Acyl Homoserine Lactone Hydrolase

Structural highlights

2btn is a 1 chain structure with sequence from Bacillus thuringiensis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

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.^[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

In many Gram-negative bacteria, including a number of pathogens such as Pseudomonas aeruginosa and Erwinia carotovora, virulence factor production and biofilm formation are linked to the quorum-sensing systems that use diffusible N-acyl-L-homoserine lactones (AHLs) as intercellular messenger molecules. A number of organisms also contain genes coding for lactonases that hydrolyze AHLs into inactive products, thereby blocking the quorum-sensing systems. Consequently, these enzymes attract intense interest for the development of antiinfection therapies. However, the catalytic mechanism of AHL-lactonase is poorly understood and subject to controversy. We here report a 2.0-angstroms resolution structure of the AHL-lactonase from Bacillus thuringiensis and a 1.7-angstroms crystal structure of its complex with L-homoserine lactone. Despite limited sequence similarity, the enzyme shows remarkable structural similarities to glyoxalase II and RNase Z proteins, members of the metallo-beta-lactamase superfamily. We present experimental evidence that AHL-lactonase is a metalloenzyme containing two zinc ions involved in catalysis, and we propose a catalytic mechanism for bacterial metallo-AHL-lactonases.

The molecular structure and catalytic mechanism of a quorum-quenching N-acyl-L-homoserine lactone hydrolase.,Kim MH, Choi WC, Kang HO, Lee JS, Kang BS, Kim KJ, Derewenda ZS, Oh TK, Lee CH, Lee JK Proc Natl Acad Sci U S A. 2005 Dec 6;102(49):17606-11. Epub 2005 Nov 28. PMID:16314577^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Kim MH, Choi WC, Kang HO, Lee JS, Kang BS, Kim KJ, Derewenda ZS, Oh TK, Lee CH, Lee JK. The molecular structure and catalytic mechanism of a quorum-quenching N-acyl-L-homoserine lactone hydrolase. Proc Natl Acad Sci U S A. 2005 Dec 6;102(49):17606-11. Epub 2005 Nov 28. PMID:16314577
↑ Kim MH, Choi WC, Kang HO, Lee JS, Kang BS, Kim KJ, Derewenda ZS, Oh TK, Lee CH, Lee JK. The molecular structure and catalytic mechanism of a quorum-quenching N-acyl-L-homoserine lactone hydrolase. Proc Natl Acad Sci U S A. 2005 Dec 6;102(49):17606-11. Epub 2005 Nov 28. PMID:16314577

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2btn"

@@ Line 1: / Line 1: @@
 ==Crystal Structure and Catalytic Mechanism of the Quorum-Quenching N- Acyl Homoserine Lactone Hydrolase==
-<StructureSection load='2btn' size='340' side='right' caption='[[2btn]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+<StructureSection load='2btn' size='340' side='right'caption='[[2btn]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2btn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_cereus_var._thuringiensis"_smith_et_al._1952 "bacillus cereus var. thuringiensis" smith et al. 1952]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BTN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BTN FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2btn]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_thuringiensis Bacillus thuringiensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BTN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BTN FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
+</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&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2a7m|2a7m]], [[2br6|2br6]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=2btn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2btn OCA], [http://pdbe.org/2btn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2btn RCSB], [http://www.ebi.ac.uk/pdbsum/2btn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2btn ProSAT]</span></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=2btn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2btn OCA], [https://pdbe.org/2btn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2btn RCSB], [https://www.ebi.ac.uk/pdbsum/2btn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2btn 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]]
@@ Line 31: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus cereus var. thuringiensis smith et al. 1952]]
+[[Category: Bacillus thuringiensis]]
-[[Category: Choi, W C]]
+[[Category: Large Structures]]
-[[Category: Derewenda, Z S]]
+[[Category: Choi WC]]
-[[Category: Kang, B S]]
+[[Category: Derewenda ZS]]
-[[Category: Kang, H O]]
+[[Category: Kang BS]]
-[[Category: Kim, K J]]
+[[Category: Kang HO]]
-[[Category: Kim, M H]]
+[[Category: Kim KJ]]
-[[Category: Lee, C H]]
+[[Category: Kim MH]]
-[[Category: Lee, J K]]
+[[Category: Lee CH]]
-[[Category: Lee, J S]]
+[[Category: Lee JK]]
-[[Category: Oh, T K]]
+[[Category: Lee JS]]
-[[Category: Hydrolase]]
+[[Category: Oh TK]]
-[[Category: N-acyl homoserine lactone hydrolase]]
-[[Category: Quorum sensing]]

2btn

From Proteopedia

Current revision

Crystal Structure and Catalytic Mechanism of the Quorum-Quenching N- Acyl Homoserine Lactone Hydrolase

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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