1887

Abstract

SUMMARY: In four strains of B/r (ORNL), B (ORNL), B (Hill), Bs (Hill) protection by β-mercaptoethylamine (MEA) exceeded that observed for oxygen removal by nitrogen bubbling. Although only a slight decrease of protection was found with strain Bs (Hill) when oxygen was removed by nitrogen bubbling, the protection afforded by MEA in excess of that achieved by nitrogen bubbling was similar with all four strains. The data suggest that at least two mechanisms for protection by MEA may operate simultaneously in some bacteria and that one of these is a removal of oxygen equivalent to that achieved by nitrogen gas bubbling.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-28-3-431
1962-07-01
2021-10-22
Loading full text...

Full text loading...

/deliver/fulltext/micro/28/3/mic-28-3-431.html?itemId=/content/journal/micro/10.1099/00221287-28-3-431&mimeType=html&fmt=ahah

References

  1. Adler H. I., Haskins S. D. 1960; Heterogeneity of cultures of Escherichia coli B/r. Nature, Lond. 188:249
    [Google Scholar]
  2. Alexander P. 1960; Protection of macromolecules in vitro against damage by ionizing radiation. Radiation Protection and Recovery3 Hollaender A. New York: Pergamon Press;
    [Google Scholar]
  3. Bacq Z. M., Alexander P. 1961 Fundamentals of Radiobiology, second edition.470 New York: Pergamon Press;
    [Google Scholar]
  4. Birge A. C., Tobias C. A. 1954; Radiation sensitivity of yeast cells grown in aerobic and anaerobic environments. Arch. Biochem. Biophys. 52:388
    [Google Scholar]
  5. Elias C. A. 1961; The x-ray sensitivity of Escherichia coli in the presence of β-mercaptoethylamine. Radiat. Res. 15:632
    [Google Scholar]
  6. Engel M. S., Adler H. I. 1961; Catalase activity, sensitivity to hydrogen peroxide, and radiation response in the genus Escherichia . Radiat. Res. 15:269
    [Google Scholar]
  7. Graevskii E., Ya. & Konstantinova M. M. 1961; Investigation of the mechanism of the antiradiation protective effect of certain sulphur-containing substances. Proc. Acad. Sci. (U.S.S.R.) Biol. Sei. Sect. (English translation) 133:506
    [Google Scholar]
  8. Hill R. F. 1958; A radiation-sensitive mutant of Escherichia coli. Biochim. biophys. Acta 30:636
    [Google Scholar]
  9. Hill R. F., Simson E. 1961; A study of radiosensitive and radioresistant mutants of Escherichia coli strain B. J. gen. Microbiol. 24:1
    [Google Scholar]
  10. Hollaender A., Doudney C. O. 1954; Studies on the mechanisms of radiation protection and recovery with cysteamine and β-mercaptoethanol. Radiobiology Symposium112 Bacq Z. M., and Alexander P. London: Butterworths Scientific Publications;
    [Google Scholar]
  11. Howard-Flanders P., Alper T. 1957; The sensitivity of microorganisms to irradiation under controlled gas conditions. Radiat. Res. 7:518
    [Google Scholar]
  12. Marcovich H. 1957; Sur le mechanisme de l’activité radioprotectrice de la cystéamine chez les bactéries. Ann. Inst. Pasteur 93:456
    [Google Scholar]
  13. Stapleton G. E. 1960; Protection and recovery in bacteria and fungi . Radiation Protection and Recovery99 Hollaender A. New York: Pergamon Press;
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-28-3-431
Loading
/content/journal/micro/10.1099/00221287-28-3-431
Loading

Data & Media loading...

Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error