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. 1994 Nov;176(22):7115–7117. doi: 10.1128/jb.176.22.7115-7117.1994

The leader peptides of attenuation-regulated chloramphenicol resistance genes inhibit translational termination.

J G Moffat 1, W P Tate 1, P S Lovett 1
PMCID: PMC197091  PMID: 7961481

Abstract

Placing a translation stop codon at the ribosomal pause site in the leader of the attenuation-regulated cat-86 gene activates cat expression in the absence of the inducer, chloramphenicol. Genetic experiments have shown that this phenomenon depends on the amino acid sequence of the leader-encoded peptide and could readily be explained if the peptide was an inhibitor of translation termination. Here we demonstrate that the cat-86 leader pentapeptide is an in vitro inhibitor of translation termination in addition to its previously described antipeptidyltransferase activity.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Alexieva Z., Duvall E. J., Ambulos N. P., Jr, Kim U. J., Lovett P. S. Chloramphenicol induction of cat-86 requires ribosome stalling at a specific site in the leader. Proc Natl Acad Sci U S A. 1988 May;85(9):3057–3061. doi: 10.1073/pnas.85.9.3057. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Dubnau D. Translational attenuation: the regulation of bacterial resistance to the macrolide-lincosamide-streptogramin B antibiotics. CRC Crit Rev Biochem. 1984;16(2):103–132. doi: 10.3109/10409238409102300. [DOI] [PubMed] [Google Scholar]
  3. Gu Z., Harrod R., Rogers E. J., Lovett P. S. Anti-peptidyl transferase leader peptides of attenuation-regulated chloramphenicol-resistance genes. Proc Natl Acad Sci U S A. 1994 Jun 7;91(12):5612–5616. doi: 10.1073/pnas.91.12.5612. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Gu Z., Harrod R., Rogers E. J., Lovett P. S. Properties of a pentapeptide inhibitor of peptidyltransferase that is essential for cat gene regulation by translation attenuation. J Bacteriol. 1994 Oct;176(20):6238–6244. doi: 10.1128/jb.176.20.6238-6244.1994. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Gu Z., Rogers E. J., Lovett P. S. Peptidyl transferase inhibition by the nascent leader peptide of an inducible cat gene. J Bacteriol. 1993 Sep;175(17):5309–5313. doi: 10.1128/jb.175.17.5309-5313.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Lovett P. S. Translational attenuation as the regulator of inducible cat genes. J Bacteriol. 1990 Jan;172(1):1–6. doi: 10.1128/jb.172.1.1-6.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Mayford M., Weisblum B. ermC leader peptide. Amino acid sequence critical for induction by translational attenuation. J Mol Biol. 1989 Mar 5;206(1):69–79. doi: 10.1016/0022-2836(89)90524-x. [DOI] [PubMed] [Google Scholar]
  8. Monro R. E., Marcker K. A. Ribosome-catalysed reaction of puromycin with a formylmethionine-containing oligonucleotide. J Mol Biol. 1967 Apr 28;25(2):347–350. doi: 10.1016/0022-2836(67)90146-5. [DOI] [PubMed] [Google Scholar]
  9. Monro R. E., Vazquez D. Ribosome-catalysed peptidyl transfer: effects of some inhibitors of protein synthesis. J Mol Biol. 1967 Aug 28;28(1):161–165. doi: 10.1016/s0022-2836(67)80085-8. [DOI] [PubMed] [Google Scholar]
  10. Mulbry W. W., Ambulos N. P., Jr, Lovett P. S. Bacillus subtilis mutant allele sup-3 causes lysine insertion at ochre codons: use of sup-3 in studies of translational attenuation. J Bacteriol. 1989 Oct;171(10):5322–5324. doi: 10.1128/jb.171.10.5322-5324.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Rogers E. J., Ambulos N. P., Jr, Lovett P. S. Complementarity of Bacillus subtilis 16S rRNA with sites of antibiotic-dependent ribosome stalling in cat and erm leaders. J Bacteriol. 1990 Nov;172(11):6282–6290. doi: 10.1128/jb.172.11.6282-6290.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Rogers E. J., Kim U. J., Ambulos N. P., Jr, Lovett P. S. Four codons in the cat-86 leader define a chloramphenicol-sensitive ribosome stall sequence. J Bacteriol. 1990 Jan;172(1):110–115. doi: 10.1128/jb.172.1.110-115.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Rogers E. J., Lovett P. S. The cis-effect of a nascent peptide on its translating ribosome: influence of the cat-86 leader pentapeptide on translation termination at leader codon 6. Mol Microbiol. 1994 Apr;12(2):181–186. doi: 10.1111/j.1365-2958.1994.tb01007.x. [DOI] [PubMed] [Google Scholar]
  14. Tate W. P., Brown C. M. Translational termination: "stop" for protein synthesis or "pause" for regulation of gene expression. Biochemistry. 1992 Mar 10;31(9):2443–2450. doi: 10.1021/bi00124a001. [DOI] [PubMed] [Google Scholar]

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