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Appl Environ Microbiol. 1989 September; 55(9): 2242-2246

Transformation of Saccharomyces cerevisiae by electroporation.

E Delorme

Amgen Inc., Thousand Oaks, California 91320.

ABSTRACT

A method for introducing heterologous DNA into Saccharomyces cerevisiae rapidly and efficiently by electroporation was developed. Transformant colonies appeared somewhat sooner than by the LiCl or spheroplast transformation method, and the time spent in manipulation was much less than for these two methods. The pores in the cell membrane formed by the high voltage of electroporation were resealed within 6 to 7 min after electroporation. At a capacitance of 25 microF, the optimum voltage was 2.0 to 2.25 kV/cm. Log-phase cells concentrated to 10 to 20 units at an optical density of 600 nm in 200 microliters of fresh rich medium and electroporated at 2.25 kV/cm in the presence of 0.1 microgram of supercoiled plasmid DNA will yield 1,000 to 4,500 colonies per microgram of DNA.

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Appl Environ Microbiol. 1989 September; 55(9): 2242-2246

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