4M3E image
Entry Detail
PDB ID:
4M3E
Title:
Rapid and efficient design of new inhibitors of Mycobacterium tuberculosis transcriptional repressor EthR using fragment growing, merging and linking approaches
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2013-08-06
Release Date:
2014-06-25
Method Details:
Experimental Method:
Resolution:
2.11 Å
R-Value Free:
0.30
R-Value Work:
0.25
R-Value Observed:
0.25
Space Group:
P 41 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:HTH-type transcriptional regulator EthR
Chain IDs:A
Chain Length:216
Number of Molecules:1
Biological Source:Mycobacterium tuberculosis
Ligand Molecules
Primary Citation
Ligand Efficiency Driven Design of New Inhibitors of Mycobacterium tuberculosis Transcriptional Repressor EthR Using Fragment Growing, Merging, and Linking Approaches.
J.Med.Chem. 57 4876 4888 (2014)
PMID: 24818704 DOI: 10.1021/jm500422b

Abstact

Tuberculosis remains a major cause of mortality and morbidity, killing each year more than one million people. Although the combined use of first line antibiotics (isoniazid, rifampicin, pyrazinamide, and ethambutol) is efficient to treat most patients, the rapid emergence of multidrug resistant strains of Mycobacterium tuberculosis stresses the need for alternative therapies. Mycobacterial transcriptional repressor EthR is a key player in the control of second-line drugs bioactivation such as ethionamide and has been shown to impair the sensitivity of the human pathogen Mycobacterium tuberculosis to this antibiotic. As a way to identify new potent ligands of this protein, we have developed fragment-based approaches. In the current study, we combined surface plasmon resonance assay, X-ray crystallography, and ligand efficiency driven design for the rapid discovery and optimization of new chemotypes of EthR ligands starting from a fragment. The design, synthesis, and in vitro and ex vivo activities of these compounds will be discussed.

Legend

Protein

Chemical

Disease

Primary Citation of related structures