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PMID: 1095547 Published · ppublish English Journal Article

dnaB gene of Escherichia coli K-12 affects superinfection inhibition between F' plasmids.

Journal of bacteriology ·Vol. 123 ·No. 1 ·1975-07-00 ·Pages 137-46

Bezanson GS, Iyer VN

Abstract

F' Escherichia coli K-12 strains bearing the chromosomal mutation dnaB43 offer significantly less resistance to the conjugational introduction of a second F' plasmid than do nonmutant strains. Both the entry exclusion and incompatibility components of superinfection inhibition are altered. This action of dnaB43 occurs regardless of the presence of a recA-minus mutation in matings in liquid cultures and on membrane filters and is not limited to a particular set of F' plasmids. These effects are co-transducible by phage P1 with the temperature sensitivity conferred by dnaB43. The effects also occur with a strain carrying dnaB107. In the double F' strains that arise, the two plasmids exist as units autonomous of one another and the chromosome.

MeSH Terms
Chromosomes, Bacterial/metabolism Coliphages/metabolism Conjugation, Genetic DNA, Bacterial/metabolism Escherichia coli/metabolism Extrachromosomal Inheritance F Factor Genes Mutation Plasmids Transduction, Genetic
Chemicals
DNA, Bacterial
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Bezanson G S
Iyer V N
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34 references, click to expand
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Article Info
Journal
Journal of bacteriology
Abbr.
J Bacteriol
ISSN
0021-9193
DOI
10.1128/jb.123.1.137-146.1975
Published
1975-07-00
Pages
137-46
Language
English
Region
United States
NLM ID
2985120R
PMCID
PMC235700
Subset
IM
External Links
PubMed source DOI: 10.1128/jb.123.1.137-146.1975 PMC Full Text View journal details
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