6ND6

Crystal structure of the Thermus thermophilus 70S ribosome in complex with erythromycin and bound to mRNA and A-, P-, and E-site tRNAs at 2.85A resolution

これはPDB形式変換不可エントリーです。

6ND6 の概要

• エントリーDOI: 10.2210/pdb6nd6/pdb
• 分子名称: 23S Ribosomal RNA, 50S ribosomal protein L14, 50S ribosomal protein L15, ... (60 entities in total)
• 機能のキーワード: chloramphenicol, erythromycin, competition, antibiotic, 70s ribosome, inhibition of translation, peptidyl transferase center, nascent peptide exit tunnel, ribosome, ribosome-antibiotic complex, ribosome/antibiotic
• 由来する生物種: Escherichia coli; 詳細
• タンパク質・核酸の鎖数: 112
• 化学式量合計: 4572351.56

構造登録者

Svetlov, M.S.,Plessa, E.,Chen, C.-W.,Bougas, A.,Krokidis, M.G.,Dinos, G.P.,Polikanov, Y.S. (登録日: 2018-12-13, 公開日: 2019-02-20, 最終更新日: 2025-03-19)

主引用文献

Svetlov, M.S.,Plessa, E.,Chen, C.W.,Bougas, A.,Krokidis, M.G.,Dinos, G.P.,Polikanov, Y.S.
High-resolution crystal structures of ribosome-bound chloramphenicol and erythromycin provide the ultimate basis for their competition.
RNA, 25:600-606, 2019

PubMed Abstract: The 70S ribosome is a major target for antibacterial drugs. Two of the classical antibiotics, chloramphenicol (CHL) and erythromycin (ERY), competitively bind to adjacent but separate sites on the bacterial ribosome: the catalytic peptidyl transferase center (PTC) and the nascent polypeptide exit tunnel (NPET), respectively. The previously reported competitive binding of CHL and ERY might be due either to a direct collision of the two drugs on the ribosome or due to a drug-induced allosteric effect. Because of the resolution limitations, the available structures of these antibiotics in complex with bacterial ribosomes do not allow us to discriminate between these two possible mechanisms. In this work, we have obtained two crystal structures of CHL and ERY in complex with the 70S ribosome at a higher resolution (2.65 and 2.89 Å, respectively) allowing unambiguous placement of the drugs in the electron density maps. Our structures provide evidence of the direct collision of CHL and ERY on the ribosome, which rationalizes the observed competition between the two drugs.

PubMed: 30733327
DOI: 10.1261/rna.069260.118

実験手法

X-RAY DIFFRACTION (2.85 Å)