Cited by 82RNA and protein synthesis mechanismsAntibiotic Resistance in BacteriaBacterial Genetics and Biotechnology

Localization of the Ribosomal Protection Protein Tet(O) on the Ribosome and the Mechanism of Tetracycline Resistance

Open access
Spahn, Christian M.T., Blaha, Gregor, Agrawal, Rajendra K., Penczek, Pawel, Grassucci, Robert A., Trieber, Catharine A., Connell, Sean R., Taylor, Diane E. +2 more·2001·Molecular Cell

Abstract

Tet(O) belongs to a class of ribosomal protection proteins that mediate tetracycline resistance. It is a G protein that shows significant sequence similarity to elongation factor EF-G. Here we present a cryo-electron microscopic reconstruction, at 16 A resolution, of its complex with the E. coli 70S ribosome. Tet(O) was bound in the presence of a noncleavable GTP analog to programmed ribosomal complexes carrying fMet-tRNA in the P site. Tet(O) is directly visible as a mass close to the A-site region, similar in shape and binding position to EF-G. However, there are important differences. One of them is the different location of the tip of domain IV, which in the Tet(O) case, does not overlap with the ribosomal A site but is directly adjacent to the primary tetracycline binding site. Our findings give insights into the mechanism of tetracycline resistance.

Integrity signals

Registry

Crossref · 10.1016/s1097-2765(01)00238-6

Cites

45 of 45 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The existing 16-Å reconstruction of Tet(O)-70S is unsuitable for building an atomic model.

    “The existing 16-Å reconstruction of Tet(O)-70S 9 is unsuitable for this purpose.”
  • The density for Tet(O) in the improved map is at a position that agrees with the earlier study, but its boundary and shape are better defined in the context of the 70S ribosome.

    “The density for Tet(O) in this improved map is at a position which agrees with that described in the earlier study 9, but boundary and shape are better defined in the context with the 70S ribosome (Fig. 1).”
  • Tet(O) shares five structural domains with EF-G; the first two contain the GTP-binding site and are close to the GTP-associated center of the 50S subunit, while the other three are distinct for Tet(O) and associated with its specific functions.

    “Sequence homology shows that Tet(O) shares the five structural domains with EF-G, the first two containing the GTP-binding site and being close to the GTP-associated center of the 50S ribosomal subunit, while the other three domains are distinct for Tet(O) and associated with its specific functions 9,10.”
  • A previous 16 Å cryo-EM study showed that Tet(O) has a similar shape to EF-G and binds to the same general site within the intersubunit cavity of the ribosome.

    “A previous Tet(O) cryo-EM study 9, with a density map at a resolution of 16 Å, allowed the visualization of Tet(O) bound to the Escherichia coli ribosome, revealing that Tet(O) indeed has a similar shape as EF-G and binds to the same general site within the intersubunit cavity of the ribosome.”
  • The presence of the 465-loop of Tet(O) at the base of the 30S subunit's beak prevents the head of the 30S subunit from rotating, a motion required in the normal course of mRNA-tRNA translocation.

    “The presence of the 465-loop of Tet(O) at the base of the 30S subunit’s beak prevents the head of the 30S subunit from rotating, a motion required in the normal course of mRNA-tRNA translocation 9.”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Spahn, C. M. T., Blaha, G., Agrawal, R. K., Penczek, P., Grassucci, R. A., Trieber, C. A., Connell, S. R., Taylor, D. E., Nierhaus, K. H., & Frank, J.
Affiliations
  • Wadsworth Center (US)
  • Max Planck Institute for Molecular Genetics (DE)
  • State University of New York (US)
  • University of Alberta (CA)
Corresponding author
Frank, Joachim
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2001-05
Volume
7
Issue
5
Pages
1037-1045
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1999497853
Cited by
81
References
45
Citations by year
2025: 3 · 2024: 2 · 2023: 3 · 2022: 1 · 2020: 2 · 2019: 2 · 2018: 4 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 9 · 2013: 3 · 2012: 6
FWCI
1.51
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (R01-GM-55440, R01GM055440, R37GM029169, R37 GM-29169)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Antibiotic Resistance in Bacteria
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
tetO, ribosomal protection proteins, tetracycline resistance, ribosome, G proteins, Escherichia coli, 70S ribosome, A-site, P site, fMet-tRNA, cryo-electron microscopy, domain IV
MeSH terms
Bacterial Proteins, Binding Sites, Carrier Proteins, Escherichia coli, Models, Molecular, Molecular Conformation, Ribosomes, Tetracycline Resistance, Protein Biosynthesis, RNA-Binding Proteins, Protein Structure, Tertiary, Cryoelectron Microscopy

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review