9DTF

Crystal structure of the complex of M. tuberculosis PheRS with cognate precursor tRNA and fragment DDD01008876

これはPDB形式変換不可エントリーです。

9DTF の概要

• エントリーDOI: 10.2210/pdb9dtf/pdb
• 関連するPDBエントリー: 9DRT 9DSX
• 分子名称: Phenylalanine--tRNA ligase alpha subunit, TRIETHYLENE GLYCOL, 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID, ... (12 entities in total)
• 機能のキーワード: aminoacylation, phenylalanyl trna synthetase, structural genomics, ligase-trna complex, center for structural biology of infectious diseases, csbid, ligase, ligase-rna complex, ligase/rna
• 由来する生物種: Mycobacterium tuberculosis H37Rv; 詳細
• タンパク質・核酸の鎖数: 6
• 化学式量合計: 305837.58

構造登録者

Chang, C.,Michalska, K.,Forte, B.,Baragana, B.,Gilbert, I.H.,Wower, J.,Joachimiak, A. (登録日: 2024-09-30, 公開日: 2025-06-04)

主引用文献

Gade, P.,Chang, C.,Pryde, D.S.,Fletcher, D.,Niven, S.,Magalhaes, L.G.,Robinson, D.,Saini, J.,Ibrahim, P.E.G.F.,Forte, B.,Wower, J.,Bodkin, M.J.,Baragana, B.,Gilbert, I.H.,Michalska, K.,Joachimiak, A.
Different chemical scaffolds bind to L-phe site in Mycobacterium tuberculosis Phe-tRNA synthetase.
Eur.J.Med.Chem., 287:117335-117335, 2025

PubMed Abstract: Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mt), is one of the deadliest infectious diseases. The rise of multidrug-resistant strains represents a major public health threat, requiring new therapeutic options. Bacterial aminoacyl-tRNA synthetases (aaRS) have been shown to be highly promising drug targets, including for TB treatment. These enzymes play an essential role in translating the DNA gene code into protein sequence by attaching specific amino acid to their cognate tRNAs. They have multiple binding sites that can be targeted for inhibitor discovery: amino acid binding pocket, ATP binding pocket, tRNA binding site and an editing domain. Recently we reported several high-resolution structures of M. tuberculosis phenylalanyl-tRNA synthetase (MtPheRS) complexed with tRNA and either L-Phe or a nonhydrolyzable phenylalanine adenylate analog. Here, using Nucleic Magnetic Resonance (NMR) and Surface Plasmon Resonance (SPR) we identified fragments that bind to MtPheRS and we determined crystal structures of their complexes with MtPheRS/tRNA. All the binders interact with the L-Phe amino acid binding site. The analysis of interactions of the new compounds combined with adenylate analog structure provides insights for the rational design of anti-tuberculosis drugs. The 3' arm of the tRNA in all the structures was disordered with exception of one complex with D-735 compound. In this structure the 3' CCA end of the acceptor stem is observed in the editing domain of MtPheRS providing insights regarding the post-transfer editing activity of class II aaRS.

PubMed: 39919438
DOI: 10.1016/j.ejmech.2025.117335

実験手法

X-RAY DIFFRACTION (2.45 Å)