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Activity of Chi Recombinational Hotspots in Salmonella Typhimurium

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Journal Genetics
Specialty Genetics
Date 1986 Mar 1
PMID 2937685
Citations 15
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Abstract

Chi sites have previously been shown to stimulate homologous recombination by the Escherichia coli RecBC pathway. To test the activity of Chi in another organism, bacteriophage lambda crosses were carried out in Salmonella typhimurium strains bearing the E. coli lambda receptor protein. Chi is active in these crosses in S. typhimurium, but is less active than in the same crosses carried out in E. coli. The lower Chi activity in S. typhimurium appears to be intrinsic to the S. typhimurium RecBC enzyme, since the Chi activity in E. coli-S. typhimurium hybrids depends on the species of origin of their RecBC enzyme. For these studies we constructed and F' factor and a pBR322-derived plasmid carrying the thyA+ recC+ recB+ argA+ region of the S. typhimurium chromosome.

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References
1.
Smith G, Kunes S, Schultz D, Taylor A, Triman K . Structure of chi hotspots of generalized recombination. Cell. 1981; 24(2):429-36. DOI: 10.1016/0092-8674(81)90333-0. View

2.
Kenter A, Birshtein B . Chi, a promoter of generalized recombination in lambda phage, is present in immunoglobulin genes. Nature. 1981; 293(5831):402-4. DOI: 10.1038/293402a0. View

3.
Sasaki M, Fujiyoshi T, Shimada K, Takagi Y . Fine structure of the recB and recC gene region of Escherichia coli. Biochem Biophys Res Commun. 1982; 109(2):414-22. DOI: 10.1016/0006-291x(82)91737-5. View

4.
SANGER F, Coulson A, Hong G, Hill D, Petersen G . Nucleotide sequence of bacteriophage lambda DNA. J Mol Biol. 1982; 162(4):729-73. DOI: 10.1016/0022-2836(82)90546-0. View

5.
Schultz D, Taylor A, Smith G . Escherichia coli RecBC pseudorevertants lacking chi recombinational hotspot activity. J Bacteriol. 1983; 155(2):664-80. PMC: 217737. DOI: 10.1128/jb.155.2.664-680.1983. View