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Nature Communications, volume 7, issue 1, publication number 12026

A combined cryo-EM and molecular dynamics approach reveals the mechanism of ErmBL-mediated translation arrest

Arenz Stefan 1
Bock Lars V 2
Gräf Michael 1
Innis C Axel 3, 4, 5
Beckmann Roland 1, 6
Grubmüller Helmut 2
Vaiana Andrea C 2
Wilson Daniel N. 1, 6
1
 
Gene Center and Department for Biochemistry, University of Munich, Munich, Germany
2
 
Department of Theoretical and Computational Biophysics, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
4
 
INSERM U1212, Bordeaux, France
5
 
CNRS UMR7377, Bordeaux, France
6
 
Center for integrated Protein Science Munich, University of Munich, Munich, Germany
Publication typeJournal Article
Publication date2016-07-06
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor16.6
ISSN20411723
PubMed ID:  27380950
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Abstract
Nascent polypeptides can induce ribosome stalling, regulating downstream genes. Stalling of ErmBL peptide translation in the presence of the macrolide antibiotic erythromycin leads to resistance in Streptococcus sanguis. To reveal this stalling mechanism we obtained 3.6-Å-resolution cryo-EM structures of ErmBL-stalled ribosomes with erythromycin. The nascent peptide adopts an unusual conformation with the C-terminal Asp10 side chain in a previously unseen rotated position. Together with molecular dynamics simulations, the structures indicate that peptide-bond formation is inhibited by displacement of the peptidyl-tRNA A76 ribose from its canonical position, and by non-productive interactions of the A-tRNA Lys11 side chain with the A-site crevice. These two effects combine to perturb peptide-bond formation by increasing the distance between the attacking Lys11 amine and the Asp10 carbonyl carbon. The interplay between drug, peptide and ribosome uncovered here also provides insight into the fundamental mechanism of peptide-bond formation.

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Arenz S. et al. A combined cryo-EM and molecular dynamics approach reveals the mechanism of ErmBL-mediated translation arrest // Nature Communications. 2016. Vol. 7. No. 1. 12026
GOST all authors (up to 50) Copy
Arenz S., Bock L. V., Gräf M., Innis C. A., Beckmann R., Grubmüller H., Vaiana A. C., Wilson D. N. A combined cryo-EM and molecular dynamics approach reveals the mechanism of ErmBL-mediated translation arrest // Nature Communications. 2016. Vol. 7. No. 1. 12026
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RIS Copy
TY - JOUR
DO - 10.1038/ncomms12026
UR - https://doi.org/10.1038%2Fncomms12026
TI - A combined cryo-EM and molecular dynamics approach reveals the mechanism of ErmBL-mediated translation arrest
T2 - Nature Communications
AU - Arenz, Stefan
AU - Bock, Lars V
AU - Gräf, Michael
AU - Innis, C Axel
AU - Beckmann, Roland
AU - Grubmüller, Helmut
AU - Vaiana, Andrea C
AU - Wilson, Daniel N.
PY - 2016
DA - 2016/07/06 00:00:00
PB - Springer Nature
IS - 1
VL - 7
PMID - 27380950
SN - 2041-1723
ER -
BibTex
Cite this
BibTex Copy
@article{2016_Arenz,
author = {Stefan Arenz and Lars V Bock and Michael Gräf and C Axel Innis and Roland Beckmann and Helmut Grubmüller and Andrea C Vaiana and Daniel N. Wilson},
title = {A combined cryo-EM and molecular dynamics approach reveals the mechanism of ErmBL-mediated translation arrest},
journal = {Nature Communications},
year = {2016},
volume = {7},
publisher = {Springer Nature},
month = {jul},
url = {https://doi.org/10.1038%2Fncomms12026},
number = {1},
doi = {10.1038/ncomms12026}
}
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