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. 1974 Oct;120(1):407–415. doi: 10.1128/jb.120.1.407-415.1974

Isolation and Characterization of an Escherichia coli K-12 Mutant with a Temperature-Sensitive RecA− Phenotype

Robert G Lloyd a,1, Brooks Low a, G Nigel Godson a, Edward A Birge a,2
PMCID: PMC245777  PMID: 4607624

Abstract

A mutation that causes a temperature-sensitive RecA− phenotype was identified in a derivative of a PolA− strain that failed to grow at high temperature. The mutant allele (recA200) was shown to be linked to cysC, conferred a sharply temperature-sensitive, ultraviolet-sensitive Rec− phenotype in the range 35 to 42 C, and in crosses failed to show complementation at 42 C with Hfr's that transferred recA−. Double mutants that carried both recA200 and polA were examined for ability to grow and synthesize DNA at restrictive temperatures.

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Selected References

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