title: Construction of a new shuttle vector for Lactobacillus.
abstract: To clone the malolactic enzyme gene from Lactobacillus sp. 89, construction of a shuttle vector able to express itself in Lactobacillus sp. 89 and Escherichia coli was undertaken. The shuttle plasmid pLE16 resulted from the union of pBR328 and of the pLB10 plasmid extracted from Lactobacillus bulgaricus 10. The bacterial transformation in Lactobacillus sp. 89 was performed by electroporation, and the clones were selected on MRS medium with 30 micrograms.mL-1 chloramphenicol added. Fifty percent of the clones from Lactobacillus sp. 89 lost their resistance to chloramphenicol following 28 generations when the selection pressure was not maintained. The restriction map of pLE16 (7600 bp) was established using several restriction enzymes.
authors.affiliation: Chaire de microbiologie industrielle et de génétique des microorganismes, Ecole nationale supérieure agronomique de Montpellier, France.
authors.forename: P
authors.initials: P
authors.lastname: Chagnaud
authors.forename: C K
authors.initials: CK
authors.lastname: Chan Kwo Chion
authors.forename: R
authors.initials: R
authors.lastname: Duran
authors.forename: P
authors.initials: P
authors.lastname: Naouri
authors.forename: A
authors.initials: A
authors.lastname: Arnaud
authors.forename: P
authors.initials: P
authors.lastname: Galzy
mesh_terms: D004926:Escherichia coli / Q000235:genetics; D005822:Genetic Vectors; D007778:Lactobacillus / Q000201:enzymology / Q000235:genetics*; D008291:Malate Dehydrogenase / Q000235:genetics; D010957:Plasmids; D015183:Restriction Mapping; D014170:Transformation, Genetic
chemical_list: C037731:malolactic enzyme; D008291:Malate Dehydrogenase