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. 1973 Jan;113(1):105–113. doi: 10.1128/jb.113.1.105-113.1973

Genetic Analysis of Flagellar Mutants in Escherichia coli

M Silverman 1, M Simon 1
PMCID: PMC251608  PMID: 4567134

Abstract

Flagellar mutants in Escherichia coli were obtained by selection for resistance to the flagellotropic phage χ. F elements covering various regions of the E. coli genome were then constructed, and, on the basis of the ability of these elements to restore flagellar function, the mutations were assigned to three regions of the E. coli chromosome. Region I is between trp and gal; region II is between uvrC and aroD; and region III is between his and uvrC. F elements carrying flagellar mutations were constructed. Stable merodiploid strains with a flagellar defect on the exogenote and another on the endogenote were then prepared. These merodiploids yielded information on the complementation behavior of mutations in a given region. Region III was shown to include at least six cistrons, A, B, C, D, E, and F. Region II was shown to include at least four cistrons, G, H, I, and J. Examination of the phenotypes of the mutants revealed that those with lesions in cistron E of region III produce “polyhooks” and lesions in cistron F of region III result in loss of ability to produce flagellin. Mutants with lesions in cistron J of region II were entirely paralyzed (mot) mutants. Genetic analysis of flagellar mutations in region III suggested that the mutations located in cistrons A, B, C, and E are closely linked and mutations in cistrons D and F are closely linked.

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Selected References

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

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