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Zinc-selective inhibition of the promiscuous bacterial amide-hydrolase DapE : implications of metal heterogeneity for evolution and antibiotic drug design

Uda, Narasimha Rao and Upert, Grégory and Angelici, Gaetano and Nicolet, Stefan and Schmidt, Tobias and Schwede, Torsten and Creus, Marc. (2014) Zinc-selective inhibition of the promiscuous bacterial amide-hydrolase DapE : implications of metal heterogeneity for evolution and antibiotic drug design. Metallomics, Vol. 6, H. 1. pp. 88-95.

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Official URL: http://edoc.unibas.ch/dok/A6183943

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Abstract

The development of resistance to virtually all current antibiotics makes the discovery of new antimicrobial compounds with novel protein targets an urgent challenge. The dapE-encoded N-succinyl-l,l-diaminopimelic acid desuccinylase (DapE) is an essential metallo-enzyme for growth and proliferation in many bacteria, acting in the desuccinylation of N-succinyl-l,l-diaminopimelic acid (SDAP) in a late stage of the anabolic pathway towards both lysine and a crucial building block of the peptidoglycan cell wall. l-Captopril, which has been shown to exhibit very promising inhibitory activity in vitro against DapE and has attractive drug-like properties, nevertheless does not target DapE in bacteria effectively. Here we show that l-captopril targets only the Zn(2+)-metallo-isoform of the enzyme, whereas the Mn(2+)-enzyme, which is also a physiologically relevant isoform in bacteria, is not inhibited. Our finding provides a rationale for the failure of this promising lead-compound to exhibit any significant antibiotic activity in bacteria and underlines the importance of addressing metallo-isoform heterogeneity in future drug design. Moreover, to our knowledge, this is the first example of metallo-isoform heterogeneity in vivo that provides an evolutionary advantage to bacteria upon drug-challenge.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Computational & Systems Biology > Bioinformatics (Schwede)
UniBasel Contributors:Schwede, Torsten
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Royal Society of Chemistry
ISSN:1756-5901
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Dec 2015 08:39
Deposited On:31 Jan 2014 09:51

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