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Comparative Study
. 1994 Nov:140 ( Pt 11):3053-60.
doi: 10.1099/13500872-140-11-3053.

Mosaic structure of large regions of the Lactococcus lactis subsp. cremoris chromosome

C Delorme  1 , J J Godon, S D Ehrlich, P Renault
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Comparative Study

"V体育官网入口" Mosaic structure of large regions of the Lactococcus lactis subsp. cremoris chromosome

C Delorme et al. Microbiology (Reading). 1994 Nov.
Free article

Abstract

Lactococcus lactis subsp. lactis and Lactococcus lactis subsp. cremoris are closely related phenotypically and genetically VSports手机版. Here we report that certain regions of their chromosomes diverge considerably more than others. Conserved regions differ by less than 20%, whilst variable regions differ by more than 60%. This mosaic structure may have arisen by horizontal gene transfer from distantly related bacteria since in a particular region of the L. lactis subsp. cremoris chromosome the G+C content and the codon bias are not typical for lactococci. Such an exchange, which conserves the function of the gene and cannot be achieved under selective pressure, may be of considerable importance in the evolution of bacteria. .

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