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. 1985 Nov;164(2):836–844. doi: 10.1128/jb.164.2.836-844.1985

Identification and genetic analysis of sbcC mutations in commonly used recBC sbcB strains of Escherichia coli K-12.

R G Lloyd, C Buckman
PMCID: PMC214327  PMID: 3932331

Abstract

Evidence is presented to show that Escherichia coli JC7618, JC7621, and JC7623, previously regarded as having a recB recC sbcB genotype, carry an additional mutation in a new gene designated sbcC at minute 9 on the standard genetic map. In the absence of the sbcC mutation these strains are sensitive to mitomycin C and have a reduced efficiency of recombination. Cultures of recBC sbcB (sbcC+) strains grow slowly, contain many inviable cells, and rapidly accumulate fast-growing variants due to mutation of sbcC. sbcC has been identified on recombinant plasmids and tentatively located by Tn1000 mutagenesis to a 0.9-kilobase DNA section between proC and phoR.

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Selected References

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