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. 1984 Oct;160(1):184–191. doi: 10.1128/jb.160.1.184-191.1984

lon transcriptional regulation of genes necessary for capsular polysaccharide synthesis in Escherichia coli K-12.

P Trisler, S Gottesman
PMCID: PMC214698  PMID: 6090411

Abstract

It has previously been observed that Escherichia coli lon mutations increase the levels of enzymes involved in the synthesis of colanic acid capsular polysaccharide (A. Markovitz, p. 415-462, in I. Sutherland, ed., Surface Carbohydrates of the Prokaryotic Cell, 1977). To determine how lon regulates these enzymes, we have isolated, mapped, and characterized lac operon and lac protein fusions to genes necessary for capsule synthesis by the Mu d(lac Amp) in vivo fusion technique of Casadaban and Cohen (M. J. Casadaban and S. N. Cohen, Proc. Natl. Acad. Sci. U.S.A. 76:4530-4533, 1979). At least five genes have been identified which share a common pattern of regulation: they are transcribed at low levels in lon+ strains and at significantly higher levels in lon strains. These genes are located in a cluster close to udk at 45 min on the E. coli map; we have named these genes cpsA, B, C, D, and E. An additional locus, cpsF, located at 90 min, is regulated in a similar manner to cpsA to E but is not essential for colanic acid synthesis. Similar studies on the transcriptional regulation of fusions in the gal and manA operons, also necessary for colanic acid synthesis, do not show significant regulation by the lon locus. Therefore, the regulatory system described here does not extend to all genes in the colanic acid synthesis pathway.

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Selected References

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

  1. Adhya S., Miller W. Modulation of the two promoters of the galactose operon of Escherichia coli. Nature. 1979 Jun 7;279(5713):492–494. doi: 10.1038/279492a0. [DOI] [PubMed] [Google Scholar]
  2. Bachmann B. J. Linkage map of Escherichia coli K-12, edition 7. Microbiol Rev. 1983 Jun;47(2):180–230. doi: 10.1128/mr.47.2.180-230.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Bitner R. M., Kuempel P. L. P1 transduction map spanning the replication terminus of Escherichia coli K12. Mol Gen Genet. 1981;184(2):208–212. doi: 10.1007/BF00272906. [DOI] [PubMed] [Google Scholar]
  4. Bukhari A. I., Zipser D. Mutants of Escherichia coli with a defect in the degradation of nonsense fragments. Nat New Biol. 1973 Jun 20;243(129):238–241. doi: 10.1038/newbio243238a0. [DOI] [PubMed] [Google Scholar]
  5. Casadaban M. J., Chou J. In vivo formation of gene fusions encoding hybrid beta-galactosidase proteins in one step with a transposable Mu-lac transducing phage. Proc Natl Acad Sci U S A. 1984 Jan;81(2):535–539. doi: 10.1073/pnas.81.2.535. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Casadaban M. J., Cohen S. N. Lactose genes fused to exogenous promoters in one step using a Mu-lac bacteriophage: in vivo probe for transcriptional control sequences. Proc Natl Acad Sci U S A. 1979 Sep;76(9):4530–4533. doi: 10.1073/pnas.76.9.4530. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Charette M. F., Henderson G. W., Markovitz A. ATP hydrolysis-dependent protease activity of the lon (capR) protein of Escherichia coli K-12. Proc Natl Acad Sci U S A. 1981 Aug;78(8):4728–4732. doi: 10.1073/pnas.78.8.4728. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Chung C. H., Goldberg A. L. The product of the lon (capR) gene in Escherichia coli is the ATP-dependent protease, protease La. Proc Natl Acad Sci U S A. 1981 Aug;78(8):4931–4935. doi: 10.1073/pnas.78.8.4931. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Garrick-Silversmith L., Hartman P. E. Histidine-requiring mutants of Escherichia coli K12. Genetics. 1970 Oct;66(2):231–244. doi: 10.1093/genetics/66.2.231. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Gottesman S., Gottesman M., Shaw J. E., Pearson M. L. Protein degradation in E. coli: the lon mutation and bacteriophage lambda N and cII protein stability. Cell. 1981 Apr;24(1):225–233. doi: 10.1016/0092-8674(81)90518-3. [DOI] [PubMed] [Google Scholar]
  11. Gottesman S., Zipser D. Deg phenotype of Escherichia coli lon mutants. J Bacteriol. 1978 Feb;133(2):844–851. doi: 10.1128/jb.133.2.844-851.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. HOWARD-FLANDERS P., SIMSON E., THERIOT L. A LOCUS THAT CONTROLS FILAMENT FORMATION AND SENSITIVITY TO RADIATION IN ESCHERICHIA COLI K-12. Genetics. 1964 Feb;49:237–246. doi: 10.1093/genetics/49.2.237. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Hammer-Jespersen K., Munch-Petersen A. Mutants of Escherichia coli unable to metabolize cytidine: isolation and characterization. Mol Gen Genet. 1973 Nov 2;126(2):177–186. doi: 10.1007/BF00330992. [DOI] [PubMed] [Google Scholar]
  14. Hua S. S., Markovitz A. Multiple regulator gene control of the galactose operon in Escherichia coli K-12. J Bacteriol. 1972 Jun;110(3):1089–1099. doi: 10.1128/jb.110.3.1089-1099.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Kleckner N., Roth J., Botstein D. Genetic engineering in vivo using translocatable drug-resistance elements. New methods in bacterial genetics. J Mol Biol. 1977 Oct 15;116(1):125–159. doi: 10.1016/0022-2836(77)90123-1. [DOI] [PubMed] [Google Scholar]
  16. Komeda Y., Iino T. Regulation of expression of the flagellin gene (hag) in Escherichia coli K-12: analysis of hag-lac gene fusions. J Bacteriol. 1979 Sep;139(3):721–729. doi: 10.1128/jb.139.3.721-729.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Low K. B. Escherichia coli K-12 F-prime factors, old and new. Bacteriol Rev. 1972 Dec;36(4):587–607. doi: 10.1128/br.36.4.587-607.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Mackie G., Wilson D. B. Regulation of the gal operon of Escherichia coli by the capR gene. J Biol Chem. 1972 May 25;247(10):2973–2978. [PubMed] [Google Scholar]
  19. Maloy S. R., Nunn W. D. Selection for loss of tetracycline resistance by Escherichia coli. J Bacteriol. 1981 Feb;145(2):1110–1111. doi: 10.1128/jb.145.2.1110-1111.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Markovitz A., Lieberman M. M., Rosenbaum N. Derepression of phosphomannose isomerase by regulator gene mutations involved in capsular polysaccharide synthesis in Escherichia coli K-12. J Bacteriol. 1967 Nov;94(5):1497–1501. doi: 10.1128/jb.94.5.1497-1501.1967. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Markovitz A., Sydiskis R. J., Lieberman M. M. Genetic and biochemical studies on mannose-negative mutants that are deficient in phosphomannose isomerase in Escherichia coli K-12. J Bacteriol. 1967 Nov;94(5):1492–1496. doi: 10.1128/jb.94.5.1492-1496.1967. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Mizusawa S., Gottesman S. Protein degradation in Escherichia coli: the lon gene controls the stability of sulA protein. Proc Natl Acad Sci U S A. 1983 Jan;80(2):358–362. doi: 10.1073/pnas.80.2.358. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Musso R. E., Di Lauro R., Adhya S., de Crombrugghe B. Dual control for transcription of the galactose operon by cyclic AMP and its receptor protein at two interspersed promoters. Cell. 1977 Nov;12(3):847–854. doi: 10.1016/0092-8674(77)90283-5. [DOI] [PubMed] [Google Scholar]
  24. Radke K. L., Siegel E. C. Mutation preventing capsular polysaccharide synthesis in Escherichia coli K-12 and its effect on bacteriophage resistance. J Bacteriol. 1971 May;106(2):432–437. doi: 10.1128/jb.106.2.432-437.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Rosner J. L. Formation, induction, and curing of bacteriophage P1 lysogens. Virology. 1972 Jun;48(3):679–689. doi: 10.1016/0042-6822(72)90152-3. [DOI] [PubMed] [Google Scholar]
  26. SHERMAN J. R., ADLER J. Galactokinse from Escherichia coli. J Biol Chem. 1963 Mar;238:873–878. [PubMed] [Google Scholar]
  27. Sanderson K. E., Roth J. R. Linkage map of Salmonella typhimurium, Edition VI. Microbiol Rev. 1983 Sep;47(3):410–453. doi: 10.1128/mr.47.3.410-453.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Silverman M., Simon M. Genetic analysis of flagellar mutants in Escherichia coli. J Bacteriol. 1973 Jan;113(1):105–113. doi: 10.1128/jb.113.1.105-113.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Sunshine M. G., Kelly B. Extent of host deletions associated with bacteriophage P2-mediated eduction. J Bacteriol. 1971 Nov;108(2):695–704. doi: 10.1128/jb.108.2.695-704.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Van de Klundert J. A., Van der Meide P. H., Van de Putte P., Bosch L. Mutants of Escherichia coli altered in both genes coding for the elongation factor Tu. Proc Natl Acad Sci U S A. 1978 Sep;75(9):4470–4473. doi: 10.1073/pnas.75.9.4470. [DOI] [PMC free article] [PubMed] [Google Scholar]

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