title: Transformation system for Amycolatopsis (Nocardia) mediterranei: direct transformation of mycelium with plasmid DNA.
abstract: A new procedure for transformation of Amycolatopsis (Nocardia) mediterranei LBG A3136 was developed. The method makes use of polyethylene glycol and alkaline cations and enables direct transformation of the A. mediterranei mycelium with high efficiency: more than 10(6) transformants per microgram of DNA were obtained. Transformation of A. mediterranei is stimulated by the ionophore antibiotic valinomycin and abolished by arsenate and p-chloromercuribenzenesulfonate. pMEA123, a vector based on the indigenous plasmid pMEA100 and containing the erythromycin resistance gene, was constructed.
authors.affiliation: Institute of Microbiology, Swiss Federal Institute of Technology, Zürich.
authors.forename: J
authors.initials: J
authors.lastname: Madoń
authors.forename: R
authors.initials: R
authors.lastname: Hütter
mesh_terms: D002731:4-Chloromercuribenzenesulfonate / Q000494:pharmacology; D001149:Arsenates / Q000494:pharmacology; D015139:Blotting, Southern; D002412:Cations / Q000494:pharmacology; D004352:Drug Resistance, Microbial / Q000235:genetics; D004587:Electrophoresis, Agar Gel; D004917:Erythromycin / Q000494:pharmacology; D007700:Kinetics; D009615:Nocardia / Q000235:genetics*; D010957:Plasmids / Q000235:genetics; D011092:Polyethylene Glycols / Q000494:pharmacology; D014169:Transformation, Bacterial / Q000187:drug effects; D014634:Valinomycin / Q000494:pharmacology
chemical_list: D001149:Arsenates; D002412:Cations; D014634:Valinomycin; D011092:Polyethylene Glycols; D002731:4-Chloromercuribenzenesulfonate; D004917:Erythromycin; C025657:arsenic acid