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. 1986 Nov;168(2):795–798. doi: 10.1128/jb.168.2.795-798.1986

Paraquat-mediated selection for mutations in the manganese-superoxide dismutase gene sodA.

C A Bloch, F M Ausubel
PMCID: PMC213554  PMID: 3023287

Abstract

We report the unexpected result that Escherichia coli isolates containing a multicopy plasmid (pDT1.5) carrying the manganese-superoxide dismutase gene sodA were more sensitive than the wild type to paraquat-mediated growth inhibition. The pDT1.5 locus responsible for the paraquat-sensitive phenotype was delimited to a 0.6-kilobase segment by transposon Tn5 mutagenesis. Moreover, superoxide dismutase activity was the same as in the wild type in strains carrying pDT1.5::Tn5 insertions mapping to the 0.6-kilobase locus. These data identify the 0.6-kilobase segment as the locus of sodA and establish an association between growth inhibition by paraquat and the function of the plasmid-borne sodA gene.

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Selected References

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

  1. Beauchamp C., Fridovich I. Superoxide dismutase: improved assays and an assay applicable to acrylamide gels. Anal Biochem. 1971 Nov;44(1):276–287. doi: 10.1016/0003-2697(71)90370-8. [DOI] [PubMed] [Google Scholar]
  2. Birnboim H. C., Doly J. A rapid alkaline extraction procedure for screening recombinant plasmid DNA. Nucleic Acids Res. 1979 Nov 24;7(6):1513–1523. doi: 10.1093/nar/7.6.1513. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Botterman J., Zabeau M. High-level production of the EcoRI endonuclease under the control of the pL promoter of bacteriophage lambda. Gene. 1985;37(1-3):229–239. doi: 10.1016/0378-1119(85)90277-x. [DOI] [PubMed] [Google Scholar]
  4. Bradford M. M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem. 1976 May 7;72:248–254. doi: 10.1016/0003-2697(76)90527-3. [DOI] [PubMed] [Google Scholar]
  5. Bus J. S., Cagen S. Z., Olgaard M., Gibson J. E. A mechanism of paraquat toxicity in mice and rats. Toxicol Appl Pharmacol. 1976 Mar;35(3):501–513. doi: 10.1016/0041-008x(76)90073-9. [DOI] [PubMed] [Google Scholar]
  6. Carlioz A., Touati D. Isolation of superoxide dismutase mutants in Escherichia coli: is superoxide dismutase necessary for aerobic life? EMBO J. 1986 Mar;5(3):623–630. doi: 10.1002/j.1460-2075.1986.tb04256.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Casadaban M. J., Cohen S. N. Analysis of gene control signals by DNA fusion and cloning in Escherichia coli. J Mol Biol. 1980 Apr;138(2):179–207. doi: 10.1016/0022-2836(80)90283-1. [DOI] [PubMed] [Google Scholar]
  8. Elroy-Stein O., Bernstein Y., Groner Y. Overproduction of human Cu/Zn-superoxide dismutase in transfected cells: extenuation of paraquat-mediated cytotoxicity and enhancement of lipid peroxidation. EMBO J. 1986 Mar;5(3):615–622. doi: 10.1002/j.1460-2075.1986.tb04255.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Hassan H. M., Fridovich I. Regulation of the synthesis of superoxide dismutase in Escherichia coli. Induction by methyl viologen. J Biol Chem. 1977 Nov 10;252(21):7667–7672. [PubMed] [Google Scholar]
  10. Hassan H. M., Fridovich I. Superoxide radical and the oxygen enhancement of the toxicity of paraquat in Escherichia coli. J Biol Chem. 1978 Nov 25;253(22):8143–8148. [PubMed] [Google Scholar]
  11. Hohn B., Collins J. A small cosmid for efficient cloning of large DNA fragments. Gene. 1980 Nov;11(3-4):291–298. doi: 10.1016/0378-1119(80)90069-4. [DOI] [PubMed] [Google Scholar]
  12. Keele B. B., Jr, McCord J. M., Fridovich I. Superoxide dismutase from escherichia coli B. A new manganese-containing enzyme. J Biol Chem. 1970 Nov 25;245(22):6176–6181. [PubMed] [Google Scholar]
  13. Mandel M., Higa A. Calcium-dependent bacteriophage DNA infection. J Mol Biol. 1970 Oct 14;53(1):159–162. doi: 10.1016/0022-2836(70)90051-3. [DOI] [PubMed] [Google Scholar]
  14. Maral J., Puget K., Michelson A. M. Comparative study of superoxide dismutase, catalase and glutathione peroxidase levels in erythrocytes of different animals. Biochem Biophys Res Commun. 1977 Aug 22;77(4):1525–1535. doi: 10.1016/s0006-291x(77)80151-4. [DOI] [PubMed] [Google Scholar]
  15. 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]
  16. Ow D. W., Ausubel F. M. Recombinant P4 bacteriophages propagate as viable lytic phages or as autonomous plasmids in Klebsiella pneumoniae. Mol Gen Genet. 1980;180(1):165–175. doi: 10.1007/BF00267366. [DOI] [PubMed] [Google Scholar]
  17. Takeda Y., Avila H. Structure and gene expression of the E. coli Mn-superoxide dismutase gene. Nucleic Acids Res. 1986 Jun 11;14(11):4577–4589. doi: 10.1093/nar/14.11.4577. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Touati D. Cloning and mapping of the manganese superoxide dismutase gene (sodA) of Escherichia coli K-12. J Bacteriol. 1983 Sep;155(3):1078–1087. doi: 10.1128/jb.155.3.1078-1087.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. de Bruijn F. J., Lupski J. R. The use of transposon Tn5 mutagenesis in the rapid generation of correlated physical and genetic maps of DNA segments cloned into multicopy plasmids--a review. Gene. 1984 Feb;27(2):131–149. doi: 10.1016/0378-1119(84)90135-5. [DOI] [PubMed] [Google Scholar]

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