Skip to main content
PMC home page
Journal of Bacteriology logoLink to Journal of Bacteriology
. 1977 Feb;129(2):993–1000. doi: 10.1128/jb.129.2.993-1000.1977

Glutamine synthetase of Klebsiella aerogenes: genetic and physiological properties of mutants in the adenylylation system.

K A Janssen, B Magasanik
PMCID: PMC235039  PMID: 14117

Abstract

Mutations resulting in defects in the adenylylation system of glutamine synthetase (GS) affect the expression of glnA, the structural gene for GS. Mutants with lesions in glnB are glutamine auxotrophs and contain repressed levels of highly adenylylated GS. Glutamine-independent revertants of the glnB3 mutant have acquired an additional mutation at the glnE site. The glnE54 mutant is incapable of adenylylating GS and produces high levels of enzyme, even when ammonia is present in the growth medium. The fact that mutations in glnB and glnE simultaneously disturb both the normal adenylylation and repression patterns of GS in Klebsiella aerogenes indicates that the adenylylation system, or adenylylation state, of GS is critical for the regulation of synthesis of GS.

Full text

PDF
993

Selected References

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

  1. Adler S. P., Purich D., Stadtman E. R. Cascade control of Escherichia coli glutamine synthetase. Properties of the PII regulatory protein and the uridylyltransferase-uridylyl-removing enzyme. J Biol Chem. 1975 Aug 25;250(16):6264–6272. [PubMed] [Google Scholar]
  2. Bender R. A., Janssen K. A., Resnick A. D., Blumenberg M., Foor F., Magasanik B. Biochemical parameters of glutamine synthetase from Klebsiella aerogenes. J Bacteriol. 1977 Feb;129(2):1001–1009. doi: 10.1128/jb.129.2.1001-1009.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Brenchley J. E., Prival M. J., Magasanik B. Regulation of the synthesis of enzymes responsible for glutamate formation in Klebsiella aerogenes. J Biol Chem. 1973 Sep 10;248(17):6122–6128. [PubMed] [Google Scholar]
  4. Brown M. S., Segal A., Stadtman E. R. Modulation of glutamine synthetase adenylylation and deadenylylation is mediated by metabolic transformation of the P II -regulatory protein. Proc Natl Acad Sci U S A. 1971 Dec;68(12):2949–2953. doi: 10.1073/pnas.68.12.2949. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Foor F., Janssen K. A., Magasanik B. Regulation of synthesis of glutamine synthetase by adenylylated glutamine synthetase. Proc Natl Acad Sci U S A. 1975 Dec;72(12):4844–4848. doi: 10.1073/pnas.72.12.4844. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Goldberg R. B., Bender R. A., Streicher S. L. Direct selection for P1-sensitive mutants of enteric bacteria. J Bacteriol. 1974 Jun;118(3):810–814. doi: 10.1128/jb.118.3.810-814.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
  8. 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]
  9. Prival M. J., Brenchley J. E., Magasanik B. Glutamine synthetase and the regulation of histidase formation in Klebsiella aerogenes. J Biol Chem. 1973 Jun 25;248(12):4334–4344. [PubMed] [Google Scholar]
  10. Schutt H., Holzer H. Biological function of the ammonia-induced inactivation of glutamine synthetase in Escherichia coli. Eur J Biochem. 1972 Mar 15;26(1):68–72. doi: 10.1111/j.1432-1033.1972.tb01740.x. [DOI] [PubMed] [Google Scholar]
  11. Senior P. J. Regulation of nitrogen metabolism in Escherichia coli and Klebsiella aerogenes: studies with the continuous-culture technique. J Bacteriol. 1975 Aug;123(2):407–418. doi: 10.1128/jb.123.2.407-418.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Smith G. R., Halpern Y. S., Magasanik B. Genetic and metabolic control of enzymes responsible for histidine degradation in Salmonella typhimurium. 4-imidazolone-5-propionate amidohydrolase and N-formimino-L-glutamate formiminohydrolase. J Biol Chem. 1971 May 25;246(10):3320–3329. [PubMed] [Google Scholar]
  13. Stadtman E. R., Ginsburg A., Ciardi J. E., Yeh J., Hennig S. B., Shapiro B. M. Multiple molecular forms of glutamine synthetase produced by enzyme catalyzed adenylation and deadenylylation reactions. Adv Enzyme Regul. 1970;8:99–118. doi: 10.1016/0065-2571(70)90011-7. [DOI] [PubMed] [Google Scholar]
  14. Streicher S. L., Bender R. A., Magasanik B. Genetic control of glutamine synthetase in Klebiella aerogenes. J Bacteriol. 1975 Jan;121(1):320–331. doi: 10.1128/jb.121.1.320-331.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Streicher S. L., Deleo A. B., Magasanik B. Regulation of enzyme formation in Klebsiella aerogenes by episomal glutamine synthetase of Escherichia coli. J Bacteriol. 1976 Jul;127(1):184–192. doi: 10.1128/jb.127.1.184-192.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Tyler B., Deleo A. B., Magasanik B. Activation of transcription of hut DNA by glutamine synthetase. Proc Natl Acad Sci U S A. 1974 Jan;71(1):225–229. doi: 10.1073/pnas.71.1.225. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Journal of Bacteriology are provided here courtesy of American Society for Microbiology (ASM)

RESOURCES