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J Bacteriol. 1992 July; 174(13): 4513-4516

research-article

Genetic and morphological characterization of an Escherichia coli chromosome segregation mutant.

Institut Jacques Monod, Centre National de la Recherche Scientifique, Université Paris 7, France.

ABSTRACT

The temperature-sensitive nucleoid segregation mutant of Escherichia coli, PAT32, formerly described as a parA mutant, has been shown to carry a mutation near 66 min on the genetic map. Fine mapping with phages from the collection of Kohara et al. is consistent with its being a parC allele. Observation by fluorescence microscopy revealed the formation, at a nonpermissive temperature, of filaments containing one or two large nucleoids and of normal-size anucleate cells. There was also a significant loss of viability.

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