This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

4k2g

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:21, 5 August 2016

Structure of Pseudomonas aeruginosa PvdQ bound to BRD-A33442372

Structural highlights

4k2g is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3sra, 3srb, 3src, 4k2f
Activity:	Acyl-homoserine-lactone acylase, with EC number 3.5.1.97
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PVDQ_PSEAE] Catalyzes the deacylation of acyl-homoserine lactone (AHL or acyl-HSL), releasing homoserine lactone (HSL) and the corresponding fatty acid. Possesses a specificity for the degradation of long-chain acyl-HSLs (side chains of 11 to 14 carbons in length). Degrades 3-oxo-C12-HSL, one of the two main AHL signal molecules of P.aeruginosa, and thereby functions as a quorum quencher, inhibiting the las quorum-sensing system. Therefore, may enable P.aeruginosa to modulate its own quorum-sensing-dependent pathogenic potential. Also appears to be required for pyoverdin biosynthesis.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Pseudomonas aeruginosa produces the peptide siderophore pyoverdine, which is used to acquire essential Fe3+ ions from the environment. PvdQ, an Ntn hydrolase, is required for the biosynthesis of pyoverdine. PvdQ knockout strains are not infectious in model systems, suggesting that disruption of siderophore production via PvdQ inhibition could be exploited as a target for novel antibacterial agents, by preventing cells from acquiring iron in the low iron environments of most biological settings. We have previously described a high-throughput screen to identify inhibitors of PvdQ that identified inhibitors with IC50 values of approximately 100 muM. Here, we describe the discovery of ML318, a biaryl nitrile inhibitor of PvdQ acylase. ML318 inhibits PvdQ in vitro (IC50 = 20 nM) by binding in the acyl-binding site, as confirmed by the X-ray crystal structure of PvdQ bound to ML318. Additionally, the PvdQ inhibitor is active in a whole cell assay, preventing pyoverdine production and limiting the growth of P. aeruginosa under iron-limiting conditions.

Identification of Inhibitors of PvdQ, an Enzyme Involved in the Synthesis of the Siderophore Pyoverdine.,Wurst JM, Drake EJ, Theriault JR, Jewett IT, VerPlank L, Perez JR, Dandapani S, Palmer M, Moskowitz SM, Schreiber SL, Munoz B, Gulick AM ACS Chem Biol. 2014 May 21. PMID:24824984^[4]

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

References

↑ Sio CF, Otten LG, Cool RH, Diggle SP, Braun PG, Bos R, Daykin M, Camara M, Williams P, Quax WJ. Quorum quenching by an N-acyl-homoserine lactone acylase from Pseudomonas aeruginosa PAO1. Infect Immun. 2006 Mar;74(3):1673-82. PMID:16495538 doi:74/3/1673
↑ Huang JJ, Han JI, Zhang LH, Leadbetter JR. Utilization of acyl-homoserine lactone quorum signals for growth by a soil pseudomonad and Pseudomonas aeruginosa PAO1. Appl Environ Microbiol. 2003 Oct;69(10):5941-9. PMID:14532048
↑ Lamont IL, Martin LW. Identification and characterization of novel pyoverdine synthesis genes in Pseudomonas aeruginosa. Microbiology. 2003 Apr;149(Pt 4):833-42. PMID:12686626
↑ Wurst JM, Drake EJ, Theriault JR, Jewett IT, VerPlank L, Perez JR, Dandapani S, Palmer M, Moskowitz SM, Schreiber SL, Munoz B, Gulick AM. Identification of Inhibitors of PvdQ, an Enzyme Involved in the Synthesis of the Siderophore Pyoverdine. ACS Chem Biol. 2014 May 21. PMID:24824984 doi:http://dx.doi.org/10.1021/cb5001586

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4k2g"

@@ Line 1: / Line 1: @@
 ==Structure of Pseudomonas aeruginosa PvdQ bound to BRD-A33442372==
 <StructureSection load='4k2g' size='340' side='right' caption='[[4k2g]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3sra|3sra]], [[3srb|3srb]], [[3src|3src]], [[4k2f|4k2f]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Acyl-homoserine-lactone_acylase Acyl-homoserine-lactone acylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.1.97 3.5.1.97] </span></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=4k2g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k2g OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4k2g RCSB], [http://www.ebi.ac.uk/pdbsum/4k2g PDBsum]</span></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=4k2g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k2g OCA], [http://pdbe.org/4k2g PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4k2g RCSB], [http://www.ebi.ac.uk/pdbsum/4k2g PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4k2g ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4k2g" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4k2g

From Proteopedia

Revision as of 07:21, 5 August 2016

Structure of Pseudomonas aeruginosa PvdQ bound to BRD-A33442372

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox