Binding and Action of Amino Acid Analogs of Chloramphenicol upon the Bacterial Ribosome
Journal Article
·
· Journal of Molecular Biology
- Lomonosov Moscow State Univ., Moscow (Russia)
- Univ. of Illinois, Chicago, IL (United States)
- Lomonosov Moscow State Univ., Moscow (Russia); Skolkovo Inst. of Science and Technology (Russia)
- Lomonosov Moscow State Univ., Moscow (Russia); Russian Academy of Medical Sciences, Moscow (Russia)
- National Research Centre (NRC), Moscow (Russia). Kurchatov Inst. (NRCKI)
- Skolkovo Inst. of Science and Technology (Russia); Lomonosov Moscow State Univ., Moscow (Russia)
- National Research Centre (NRC), Moscow (Russia). Kurchatov Inst. (NRCKI); Peter the Great St. Petersburg Polytechnic Univ., Saint Petersburg (Russia)
Antibiotic chloramphenicol (CHL) binds with a moderate affinity at the peptidyl transferase center of the bacterial ribosome and inhibits peptide bond formation. As an approach for modifying and potentially improving properties of this inhibitor, we explored ribosome binding and inhibitory activity of a number of amino acid analogs of CHL. We report the L-histidyl analog binds to the ribosome with the affinity exceeding that of CHL by 10 fold. Several of the newly synthesized analogs were able to inhibit protein synthesis and exhibited the mode of action that was distinct from the action of CHL. However, the inhibitory properties of the semi-synthetic CHL analogs did not correlate with their affinity and in general, the amino acid analogs of CHL were less active inhibitors of translation in comparison with the original antibiotic. The X-ray crystal structures of the Thermus thermophilus 70S ribosome in complex with three semi-synthetic analogs showed that CHL derivatives bind at the peptidyl transferase center, where the aminoacyl moiety of the tested compounds established idiosyncratic interactions with rRNA. Although still fairly inefficient inhibitors of translation, the synthesized compounds represent promising chemical scaffolds that target the peptidyl transferase center of the ribosome and potentially are suitable for further exploration.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- Illinois State; National Institute of General Medical Sciences (NIGMS); National Institutes of Health (NIH); Russian Foundation for Basic Research; Russian Science Foundation (RSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1434725
- Journal Information:
- Journal of Molecular Biology, Journal Name: Journal of Molecular Biology Journal Issue: 6 Vol. 430; ISSN 0022-2836
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Structure of an engineered multidrug transporter MdfA reveals the molecular basis for substrate recognition
|
journal | June 2019 |
New Chloramphenicol Derivatives from the Viewpoint of Anticancer and Antimicrobial Activity
|
journal | January 2019 |
Structure of ribosome-bound azole-modified peptide phazolicin rationalizes its species-specific mode of bacterial translation inhibition
|
journal | October 2019 |
Translational control of antibiotic resistance
|
journal | July 2019 |
High-resolution crystal structures of ribosome-bound chloramphenicol and erythromycin provide the ultimate basis for their competition
|
journal | February 2019 |
Similar Records
Structural basis for the inability of chloramphenicol to inhibit peptide bond formation in the presence of A-site glycine
High-resolution crystal structures of ribosome-bound chloramphenicol and erythromycin provide the ultimate basis for their competition
Journal Article
·
Tue Jun 28 20:00:00 EDT 2022
· Nucleic Acids Research
·
OSTI ID:1878375
High-resolution crystal structures of ribosome-bound chloramphenicol and erythromycin provide the ultimate basis for their competition
Journal Article
·
Wed Feb 06 19:00:00 EST 2019
· RNA
·
OSTI ID:1543007