5agt

Crystal structure of the LeuRS editing domain of Mycobacterium tuberculosis in complex with the adduct (S)-3-(Aminomethyl)-4-chloro-7-ethoxybenzo[c][1,2]oxaborol-1(3H)-ol-AMP

spinqualitylabelsall models 5agt, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5agt is a 1 chain structure with sequence from Myctu. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: A2H, GOL, MET Related: 5agr, 5ags Activity: Leucine--tRNA ligase, with EC number 6.1.1.4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The recent development and spread of extensively (XDR) and totally resistant (TDR) strains of Mycobacterium tuberculosis, highlights the need for new antitubercular drugs. Protein synthesis inhibitors have played an important role in the treatment of tuberculosis (TB) starting with the inclusion of streptomycin in the first combination therapies. Although the parenteral aminoglycosides are a key component in multidrug-resistant (MDR) TB therapy, the oxazolidinone, linezolid, is the only orally available protein synthesis inhibitor that is effective against TB. Herein, we show that small molecule inhibitors of aminoacyl-tRNA synthetases (AARS), known to be excellent antibacterial protein synthesis targets, can be designed that are orally bioavailable and effective against M. tuberculosis in TB mouse infection models. We applied the oxaborole tRNA trapping (OBORT) mechanism, which was first developed to target fungal cytoplasmic leucyl-tRNA synthetase (LeuRS), to M. tuberculosis LeuRS. X-ray crystallography was used to guide design of LeuRS inhibitors that have good biochemical potency and excellent whole cell activity against M. tuberculosis Importantly, their good oral bioavailability translates into in vivo efficacy in both the acute and chronic mouse models of TB with comparable potency to the frontline drug isoniazid. Discovery of novel oral protein synthesis inhibitors of Mycobacterium tuberculosis that target leucyl-tRNA synthetase.,Palencia A, Li X, Bu W, Choi W, Ding CZ, Easom EE, Feng L, Hernandez V, Houston P, Liu L, Meewan M, Mohan M, Rock FL, Sexton H, Zhang S, Zhou Y, Wan B, Wang Y, Franzblau SG, Woolhiser L, Gruppo V, Lenaerts AJ, O'Malley T, Parish T, Cooper CB, Waters MG, Ma Z, Ioerger TR, Sacchettini JC, Rullas J, Angulo-Barturen I, Perez-Herran E, Mendoza A, Barros D, Cusack S, Plattner JJ, Alley MR Antimicrob Agents Chemother. 2016 Aug 8. pii: AAC.01339-16. PMID:27503647 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Aminoacyl tRNA synthetase 3D structures

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