A strain of Alcaligenes eutrophus producing poly-β-hydroxybutyric acid was successfully transformed by the electroporation. The plasmid used was a broad host range plasmid pKT230 conferring kanamycin resistance. The optimum yield of transformant was 0.8×102/μg DNA when 50 μl competent cells at 1010/ml were pulsed by 11.5 kV/cm for 5 ms with 1 μg DNA. Plasmid DNA in the A. eutrophus transformant was stably maintained as a monomeric structure.
ASJC Scopus subject areas
- Applied Microbiology and Biotechnology