8S8U image
Entry Detail
PDB ID:
8S8U
Keywords:
Title:
Escherichia coli translation elongation factor P like protein (EfpL)
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2024-03-07
Release Date:
2024-10-09
Method Details:
Experimental Method:
Resolution:
2.27 Å
R-Value Free:
0.27
R-Value Work:
0.24
R-Value Observed:
0.24
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Elongation factor P-like protein
Chain IDs:A, B
Chain Length:190
Number of Molecules:2
Biological Source:Escherichia coli K-12
Primary Citation
EF-P and its paralog EfpL (YeiP) differentially control translation of proline-containing sequences.
Nat Commun 15 10465 10465 (2024)
PMID: 39622818 DOI: 10.1038/s41467-024-54556-9

Abstact

Polyproline sequences are deleterious to cells because they stall ribosomes. In bacteria, EF-P plays an important role in overcoming such polyproline sequence-induced ribosome stalling. Additionally, numerous bacteria possess an EF-P paralog called EfpL (also known as YeiP) of unknown function. Here, we functionally and structurally characterize EfpL from Escherichia coli and demonstrate its role in the translational stress response. Through ribosome profiling, we analyze the EfpL arrest motif spectrum and find additional sequences beyond the canonical polyproline motifs that both EF-P and EfpL can resolve. Notably, the two factors can also induce pauses. We further report that EfpL can sense the metabolic state of the cell via lysine acylation. Overall, our work characterizes the role of EfpL in ribosome rescue at proline-containing sequences, and provides evidence that co-occurrence of EF-P and EfpL is an evolutionary driver for higher bacterial growth rates.

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