Cited by 141RNA and protein synthesis mechanismsAntibiotic Resistance in BacteriaBacterial Genetics and Biotechnology

Purification and characterization of Tet(M), a protein that renders ribosomes resistant to tetracycline.

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Burdett, V·1991·Journal of Biological Chemistry

Abstract

The tet(M) tetracycline resistance gene has been found in a wide variety of clinically important bacteria. It has been shown previously (Burdett, V. (1986) J. Bacteriol. 165, 564-569) that the tet(M) gene product mediates resistance at the level of protein synthesis as judged by in vitro assay. Using this assay, large amounts of protein were purified from an Escherichia coli overproducer expressing the gene under control of a T7 promoter. The purified activity consists of a single polypeptide of molecular weight 68,000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and was confirmed to be the tet(M) gene product by amino-terminal sequence analysis. Purified Tet(M) has an associated ribosome-dependent GTPase with the specific activity being similar to that of the corresponding activity associated with elongation factor G. Since Tet(M) also displays substantial homology to elongation factor G throughout its length, Tet(M) may function as an analog of this elongation factor.

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Crossref · 10.1016/s0021-9258(18)49928-0

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Authors
Burdett, V
Affiliations
Duke Medical Center (US)
Corresponding author
Burdett, V
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1991-02
Volume
266
Issue
5
Pages
2872-2877
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1537838130
Cited by
141
References
39
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 3 · 2020: 5 · 2019: 2 · 2018: 2 · 2017: 5 · 2016: 3 · 2015: 6 · 2014: 6 · 2013: 4 · 2012: 5
FWCI
2.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ai015619-18)
  • National Institute of Allergy and Infectious Diseases (AI15619)
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
tetM, tetracycline resistance, ribosome protection, ribosome-associated GTPase, protein synthesis inhibition, T7 promoter, N-terminal sequence, antibiotic resistance mechanisms
MeSH terms
Amino Acid Sequence, Amino Acids, Electrophoresis, Polyacrylamide Gel, Escherichia coli, Genes, Bacterial, Hot Temperature, Hydrolysis, Molecular Sequence Data, Mutation, Peptide Elongation Factor Tu, Peptide Elongation Factors, Plasmids, Repressor Proteins, Ribosomes, Sequence Homology, Nucleic Acid, Tetracycline Resistance, Peptide Elongation Factor G, GTP Phosphohydrolase-Linked Elongation Factors

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