cadDX operon of Streptococcus salivarius 57.I.
نویسندگان
چکیده
A CadDX system that confers resistance to Cd(2+) and Zn(2+) was identified in Streptococcus salivarius 57.I. Unlike with other CadDX systems, the expression of the cad promoter was negatively regulated by CadX, and the repression was inducible by Cd(2+) and Zn(2+), similar to what was found for CadCA systems. The lower G+C content of the S. salivarius cadDX genes suggests acquisition by horizontal gene transfer.
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عنوان ژورنال:
- Applied and environmental microbiology
دوره 74 5 شماره
صفحات -
تاریخ انتشار 2008