Abstract
Electroporation is an important approach for genetic engineering experiments allowing for introduction of foreign DNA in a selected host. Here, we describe for the first time the use of glycine betaine as an osmoprotectant for electroporation of gram-positive bacteria Bacillus subtilis. High electroporation efficiency (up to 5×105cfu/μg) was obtained using 7.5% glycine betaine. The new method improved the transformation efficiency of B. subtilis with linear integrative DNA nearly 700-fold compared with existing Bacillus transformation techniques.
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