Transformation of a Methylotrophic Bacterium, Methylobacterium extorquens, with a Broad-Host-Range Plasmid by Electroporation |
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| Authors: | Shunsaku Ueda Seiji Matsumoto Shoichi Shimizu Tsuneo Yamane |
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| Abstract: | An efficient method for the transformation of the methylotrophic bacterium Methylobacterium extorquens NR-2 with a broad-host-range plasmid, pLA2917, by electroporation was examined. Transformants of M. extorquens NR-2 expressing resistance to kanamycin were obtained after electric pulse. These transformants were found to harbor a single plasmid which was electrophoretically identical and homologous to pLA2917 obtained from Escherichia coli. Several factors which determined the transformation efficiency were optimized, resulting in a transformation efficiency of up to 8 × 103 transformants per μg of plasmid DNA by 10 pulses at a field strength of 10 kV/cm and a pulse duration of 300 μs. |
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