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. 1984 Dec 1;3(12):2879-84.
doi: 10.1002/j.1460-2075.1984.tb02224.x.

Recombination efficiency is a quadratic function of the length of homology during plasmid transformation of Bacillus subtilis protoplasts and Escherichia coli competent cells

B Michel, S D Ehrlich

Recombination efficiency is a quadratic function of the length of homology during plasmid transformation of Bacillus subtilis protoplasts and Escherichia coli competent cells

B Michel et al. EMBO J. .

Abstract

Recombination efficiency between transforming and resident plasmids was 100 times higher in Bacillus subtilis protoplasts than in Escherichia coli competent cells. In both systems it varied with the square of the length of the sequences common to two plasmids within the studied range 0.96-8.8 kb in B. subtilis, 0.72-3.9 kb in E. coli. The observed exponential dependence may be characteristic of recombination occurring within a relatively short interval bordered by relatively long heterologous regions.

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