View source for 9fzo


==Pseudomonas aeruginosa penicillin binding protein 3 in complex with ceftazidime==
<StructureSection load='9fzo' size='340' side='right'caption='[[9fzo]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9fzo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9FZO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9FZO 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]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAZ:ACYLATED+CEFTAZIDIME'>CAZ</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=9fzo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9fzo OCA], [https://pdbe.org/9fzo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9fzo RCSB], [https://www.ebi.ac.uk/pdbsum/9fzo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9fzo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FTSI_PSEAE FTSI_PSEAE] Catalyzes cross-linking of the peptidoglycan cell wall at the division septum (By similarity). Binds penicillin (PubMed:20580675).[HAMAP-Rule:MF_02080]<ref>PMID:20580675</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The breakthrough cephalosporin cefiderocol, approved for clinical use in 2019, has activity against many Gram-negative bacteria. The catechol group of cefiderocol enables it to efficiently enter bacterial cells via the iron/siderophore transport system thereby reducing resistance due to porin channel mutations and efflux pump upregulation. Limited information is reported regarding the binding of cefiderocol to its key proposed target, the transpeptidase penicillin binding protein 3 (PBP3). We report studies on the reaction of cefiderocol and the related cephalosporins ceftazidime and cefepime with Pseudomonas aeruginosa PBP3, including inhibition measurements, protein observed mass spectrometry, and X-ray crystallography. The three cephalosporins form analogous 3-exomethylene products with P. aeruginosa PBP3 following elimination of the C3' side chain. pIC(50) and k (inact)/K (i) measurements with isolated PBP3 imply ceftazidime and cefiderocol react less efficiently than cefepime and, in particular, meropenem with P. aeruginosa PBP3. Crystal structures inform on conserved and different interactions involved in binding of the three cephalosporins and meropenem to P. aeruginosa PBP3. The results will aid development of cephalosporins with improved PBP3 inhibition properties.

Structural basis of Pseudomonas aeruginosa penicillin binding protein 3 inhibition by the siderophore-antibiotic cefiderocol.,Smith HG, Basak S, Aniebok V, Beech MJ, Alshref FM, Allen MD, Farley AJM, Schofield CJ Chem Sci. 2024 Sep 18. doi: 10.1039/d4sc04937c. PMID:39328188<ref>PMID:39328188</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9fzo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pseudomonas aeruginosa]]
[[Category: Allen MD]]
[[Category: Alshref FM]]
[[Category: Aniebok V]]
[[Category: Basak S]]
[[Category: Beech MJ]]
[[Category: Farley AJM]]
[[Category: Schofield CJ]]
[[Category: Smith HG]]