Abstract
Using spin labeling and spin trapping techniques in combination with electron paramagnetic resonance spectrometry, we have detected the formation of superoxide by whole cells of Methanobacterium formicicum under aerobic conditions in the presence and absence of sodium formate. Rates of superoxide generation have been estimated. The formation of additional free radical species, including formate, was observed. Production of these and other free radicals resulted in lipid peroxidation and concomitant cell damage.
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- Balch W. E., Fox G. E., Magrum L. J., Woese C. R., Wolfe R. S. Methanogens: reevaluation of a unique biological group. Microbiol Rev. 1979 Jun;43(2):260–296. doi: 10.1128/mr.43.2.260-296.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Finkelstein E., Rosen G. M., Rauckman E. J. Spin trapping of superoxide and hydroxyl radical: practical aspects. Arch Biochem Biophys. 1980 Mar;200(1):1–16. doi: 10.1016/0003-9861(80)90323-9. [DOI] [PubMed] [Google Scholar]
- Goldberg J. S., Rauckman E. J., Rosen G. M. Bioreduction of nitroxides by Staphylococcus aureus. Biochem Biophys Res Commun. 1977 Nov 7;79(1):198–202. doi: 10.1016/0006-291x(77)90080-8. [DOI] [PubMed] [Google Scholar]
- Hassan H. M., Fridovich I. Enzymatic defenses against the toxicity of oxygen and of streptonigrin in Escherichia coli. J Bacteriol. 1977 Mar;129(3):1574–1583. doi: 10.1128/jb.129.3.1574-1583.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McCord J. M., Keele B. B., Jr, Fridovich I. An enzyme-based theory of obligate anaerobiosis: the physiological function of superoxide dismutase. Proc Natl Acad Sci U S A. 1971 May;68(5):1024–1027. doi: 10.1073/pnas.68.5.1024. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rauckman E. J., Rosen G. M., Kitchell B. B. Superoxide radical as an intermediate in the oxidation of hydroxylamines by mixed function amine oxidase. Mol Pharmacol. 1979 Jan;15(1):131–137. [PubMed] [Google Scholar]
- Rosen G. M., Finkelstein E., Rauckman E. J. A method for the detection of superoxide in biological systems. Arch Biochem Biophys. 1982 May;215(2):367–378. doi: 10.1016/0003-9861(82)90097-2. [DOI] [PubMed] [Google Scholar]
- Schauer N. L., Ferry J. G. Metabolism of formate in Methanobacterium formicicum. J Bacteriol. 1980 Jun;142(3):800–807. doi: 10.1128/jb.142.3.800-807.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Woese C. R., Magrum L. J., Fox G. E. Archaebacteria. J Mol Evol. 1978 Aug 2;11(3):245–251. doi: 10.1007/BF01734485. [DOI] [PubMed] [Google Scholar]
- de Groot J. J., Garssen G. J., Vliegenthart J. F., Boldingh J. The detection of linoleic acid radicals in the anaerobic reaction of lipoxygenase. Biochim Biophys Acta. 1973 Nov 29;326(2):279–284. doi: 10.1016/0005-2760(73)90254-3. [DOI] [PubMed] [Google Scholar]