title: Transfer of plasmid DNA to Brevibacterium lactofermentum by electrotransformation.
abstract: The Escherichia coli-Brevibacterium lactofermentum shuttle vector pBLA was introduced into intact cells of B. lactofermentum by electrotransformation. Several parameters of this procedure such as voltage and cell concentration were analysed. Optimal conditions gave an efficiency of 10(6) transformants per microgram of DNA. Two recalcitrant strains could be electrotransformed when an ampicillin pretreatment step was used. Electrotransformation experiments using DNAase or different structural forms of plasmid DNA showed that the electrotransformation process is quite different from natural transformation involving competence development. Restriction-modification-proficient B. lactofermentum could be efficiently electrotransformed with pBLA DNA isolated from E. coli. This restriction-modification system therefore seems to be overcome by electrotransformation. Thus electrotransformation may efficiently replace the protoplast bacterial transformation method.
authors: Centre de Recherche de Biochimie et de Génétique Cellulaires du CNRS, Toulouse, France.
authors: S
authors: S
authors: Bonnassie
authors: J F
authors: JF
authors: Burini
authors: J
authors: J
authors: Oreglia
authors: A
authors: A
authors: Trautwetter
authors: J C
authors: JC
authors: Patte
authors: A M
authors: AM
authors: Sicard
mesh_terms: D000667:Ampicillin; D001951:Brevibacterium / Q000235:genetics*; D015169:Colony Count, Microbial; D015280:DNA Restriction-Modification Enzymes; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics*; D004560:Electricity; D004926:Escherichia coli / Q000235:genetics; D005822:Genetic Vectors; D009690:Nucleic Acid Conformation; D010957:Plasmids; D014170:Transformation, Genetic
chemical_list: D015280:DNA Restriction-Modification Enzymes; D004269:DNA, Bacterial; D000667:Ampicillin