ISDA: 8FR3

Deposition Date 2023-01-06

Release Date 2023-09-20

Last Version Date 2023-11-29

Entry Detail

PDB ID:

8FR3

Keywords:

TRANSLATION

Title:

E. coli EF-Tu in complex with KKL-55

Biological Source:

Source Organism:

Escherichia coli K-12 (Taxon ID: 83333)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.23 Å

R-Value Free:

0.27

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

P 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Elongation factor Tu
Chain IDs:A, B
Chain Length:402
Number of Molecules:2
Biological Source:Escherichia coli K-12

UniProt ID:P0CE47 Pfam ID:PF00009, PF03144, PF03143

Ligand Molecules

GDP

Y7C

Primary Citation

Antibiotic that inhibits trans -translation blocks binding of EF-Tu to tmRNA but not to tRNA.

Marathe, N, Nguyen, H.A, Alumasa, J.N, Kuzmishin Nagy, A.B, Vazquez, M, Dunham, C.M, Keiler, K.C.Show

Mbio 14 e0146123 e0146123 (2023)

PMID: 37681945 DOI: 10.1128/mbio.01461-23

Abstact

Elongation factor thermo-unstable (EF-Tu) is a universally conserved translation factor that mediates productive interactions between tRNAs and the ribosome. In bacteria, EF-Tu also delivers transfer-messenger RNA (tmRNA)-SmpB to the ribosome during trans-translation. We report the first small molecule, KKL-55, that specifically inhibits EF-Tu activity in trans-translation without affecting its activity in normal translation. KKL-55 has broad-spectrum antibiotic activity, suggesting that compounds targeted to the tmRNA-binding interface of EF-Tu could be developed into new antibiotics to treat drug-resistant infections.

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Primary Citation of related structures

Abstact

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