Cited by 527RNA and protein synthesis mechanismsRNA modifications and cancerEnzyme Structure and Function

Crystal structures of complexes of the small ribosomal subunit with tetracycline, edeine and IF3

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Pioletti, Marta, Schlünzen, Frank, Harms, Jörg, Zarivach, Raz, Glühmann, Marco, Avila, Horacio, Bashan, Anat, Bartels, Heike +5 more·2001·The EMBO Journal

Abstract

The small ribosomal subunit is responsible for the decoding of genetic information and plays a key role in the initiation of protein synthesis. We analyzed by X-ray crystallography the structures of three different complexes of the small ribosomal subunit of Thermus thermophilus with the A-site inhibitor tetracycline, the universal initiation inhibitor edeine and the C-terminal domain of the translation initiation factor IF3. The crystal structure analysis of the complex with tetracycline revealed the functionally important site responsible for the blockage of the A-site. Five additional tetracycline sites resolve most of the controversial biochemical data on the location of tetracycline. The interaction of edeine with the small subunit indicates its role in inhibiting initiation and shows its involvement with P-site tRNA. The location of the C-terminal domain of IF3, at the solvent side of the platform, sheds light on the formation of the initiation complex, and implies that the anti-association activity of IF3 is due to its influence on the conformational dynamics of the small ribosomal subunit.

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Crossref · 10.1093/emboj/20.8.1829

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  • Tetracycline binding at the second site has not been previously described.

    “Tetracycline binding at this position has not been previously described (17 -20).”
  • Negamycin and tetracycline possess chemically distinct features that form different sets of electrostatic and van der Waals interactions, specifically with h31 and h34.

    “Despite the overlapping binding sites, negamycin and tetracycline possess chemically distinct features (Fig. 2 B ) that form different sets of electrostatic and van der Waals interactions, specifically with h31 and h34 (11, 12, 17).”
  • The Tet-1 and primary tetracycline binding sites are located in the ribosomal A site, bound by the irregular minor groove of helix 34 and the loop of helix 31 in 16S rRNA.

    “In this respect, the Tet-1 and primary site in the Pioletti and Brodersen structures, respectively (Fig. 2), are located in the ribosomal A site, where tetracycline is bound by the irregular minor groove of helix 34 (h34) and the loop of helix 31 (h31) in the 16S rRNA (4, 37).”
  • The secondary and Tet-5 tetracycline-binding sites are likely candidates for the inhibitory binding site.

    “The secondary and Tet-5 tetracycline-binding sites (Fig. 2) are also likely candidates for the inhibitory binding site (4, 37).”
  • The primary (and Tet-1) site is the most highly occupied site in both structures showing tetracycline bound to the 30S subunit, consistent with the high-affinity site being the inhibitory site.

    “(i) the primary (and Tet-1) site is the most highly occupied site in both structures showing tetracycline bound to the 30S subunit (4, 37) consistent with the idea that the high-affinity site is the inhibitory site (17, 47, 56).”

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Authors
Pioletti, M., Schlünzen, F., Harms, J., Zarivach, R., Glühmann, M., Avila, H., Bashan, A., Bartels, H., Auerbach, T., Jacobi, C., Hartsch, T., Yonath, A., & Franceschi, F.
Affiliations
  • Max Planck Institute for Molecular Genetics (DE)
  • Weizmann Institute of Science (IL)
  • University of Göttingen (DE)
Venue
The EMBO Journal
Published
2001-04-17
Volume
20
Issue
8
Pages
1829-1839
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2124433456
Cited by
527
References
73
Citations by year
2026: 8 · 2025: 10 · 2024: 18 · 2023: 14 · 2022: 17 · 2021: 24 · 2020: 7 · 2019: 15 · 2018: 17 · 2017: 13 · 2016: 28 · 2015: 14 · 2014: 23 · 2013: 19 · 2012: 19
FWCI
11.55
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • GRO (submittedVersion)
Funders
  • European Synchrotron Radiation Facility
  • Max-Planck-Gesellschaft
  • National Institutes of Health (GM34360)
  • Deutsches Elektronen-Synchrotron
  • National Institute of General Medical Sciences (GM-34360, R01GM034360)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
small ribosomal subunit, tetracycline, edeine, Thermus thermophilus, P-site tRNA, initiation complex, ribosome structure, protein synthesis initiation
MeSH terms
Binding Sites, Edeine, Models, Molecular, Peptide Chain Initiation, Translational, Peptide Initiation Factors, Protein Synthesis Inhibitors, Ribosomes, Tetracycline, Thermus thermophilus, Crystallography, X-Ray, Eukaryotic Initiation Factor-3

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