4OOL image
Entry Detail
PDB ID:
4OOL
Title:
Crystal structure of PBP3 in complex with compound 14 ((2E)-2-({[(2S)-2-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-{[(1,5-dihydroxy-4-oxo-1,4-dihydropyridin-2-yl)methoxy]imino}acetyl]amino}-3-oxopropyl]oxy}imino)pentanedioic acid)
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2014-02-03
Release Date:
2014-05-07
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.24
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Cell division protein FtsI [Peptidoglycan synthetase]
Chain IDs:A
Chain Length:538
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa PA1R
Ligand Molecules
Primary Citation
Siderophore receptor-mediated uptake of lactivicin analogues in gram-negative bacteria.
J.Med.Chem. 57 3845 3855 (2014)
PMID: 24694215 DOI: 10.1021/jm500219c

Abstact

Multidrug-resistant Gram-negative pathogens are an emerging threat to human health, and addressing this challenge will require development of new antibacterial agents. This can be achieved through an improved molecular understanding of drug-target interactions combined with enhanced delivery of these agents to the site of action. Herein we describe the first application of siderophore receptor-mediated drug uptake of lactivicin analogues as a strategy that enables the development of novel antibacterial agents against clinically relevant Gram-negative bacteria. We report the first crystal structures of several sideromimic conjugated compounds bound to penicillin binding proteins PBP3 and PBP1a from Pseudomonas aeruginosa and characterize the reactivity of lactivicin and β-lactam core structures. Results from drug sensitivity studies with β-lactamase enzymes are presented, as well as a structure-based hypothesis to reduce susceptibility to this enzyme class. Finally, mechanistic studies demonstrating that sideromimic modification alters the drug uptake process are discussed.

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Primary Citation of related structures