The bacterial ribosome as a target for antibiotics
Top Cited Papers
- 2 October 2005
- journal article
- review article
- Published by Springer Science and Business Media LLC in Nature Reviews Microbiology
- Vol. 3 (11), 870-881
- https://doi.org/10.1038/nrmicro1265
Abstract
A large proportion of clinically useful antibiotics exert their antimicrobial effects by blocking protein synthesis on the ribosome. The bacterial ribosome is a ribonucleoprotein complex of about 2.5 million Daltons, and is composed of two subunits that are named after their sedimentation values of 30S and 50S. The molecular details of the ribosome have recently been determined by X-ray crystallography. Different organisms have been used as the source of ribosomal particles for crystallization. Well resolved structures have been obtained for the 30S subunit and the intact ribosome from the bacterium Thermus thermophilus. The best resolved structures for the 50S subunit come from the bacterium Deinococcus radiodurans and the archaeon Haloarcula marismortui. These crystal structures reveal the molecular details of the antibiotic-binding sites. Furthermore, they explain many earlier observations from biochemical and genetic studies including: how drugs exercise their inhibitory effects; how some drugs in combination enhance or impede each other's binding; and how alterations to ribosomal components confer resistance. The antibiotic-binding sites are located within functionally important structures in the ribosomal RNA (rRNA). Antibiotic resistance is often conferred by base substitution or methylation at these sites in the rRNA. However, resistance can also be conferred by mutations in ribosomal proteins that influence these rRNA structures. Resistance can be counteracted by equipping current antibiotics with new chemical substituents that improve their binding. Perhaps even greater potential, which is presently unrealized, lies in the rational design of novel compounds that target unexploited sites within the ribosome structure.This publication has 117 references indexed in Scilit:
- The Structural Basis of Macrolide–Ribosome Binding Assessed Using Mutagenesis of 23S rRNA Positions 2058 and 2059Journal of Molecular Biology, 2004
- Crystal Structure of Geneticin Bound to a Bacterial 16S Ribosomal RNA A Site OligonucleotideJournal of Molecular Biology, 2003
- Instruction of Translating Ribosome by Nascent PeptideScience, 2002
- Inhibition of the ribosomal peptidyl transferase reaction by the mycarose moiety of the antibiotics carbomycin, spiramycin and tylosinJournal of Molecular Biology, 2000
- The Structural Basis of Ribosome Activity in Peptide Bond SynthesisScience, 2000
- The Complete Atomic Structure of the Large Ribosomal Subunit at 2.4 Å ResolutionScience, 2000
- Structural studies of the translational apparatusCurrent Opinion in Structural Biology, 1999
- Ribosome-Catalyzed Peptide-Bond Formation with an A-Site Substrate Covalently Linked to 23 S Ribosomal RNAScience, 1998
- Sites of action of two ribosomal RNA methylases responsible for resistance to aminoglycosidesJournal of Molecular Biology, 1987
- Ribosome structure determined by electron microscopy of Escherichia coli small subunits, large subunits and monomeric ribosomesJournal of Molecular Biology, 1976