Section 39
Chapter 38,916

Bacteriophage lambda-E. coli K12 vector-host system for gene cloning and expression under lactose promoter control. II. DNA fragment insertion at the vicinity of the lac UV5 promoter

Charnay, P.; Louise, A.; Fritsch, A.; Perrin, D.; Tiollais, P.

Molecular and General Genetics Mgg 170(2): 171-178


ISSN/ISBN: 0026-8925
PMID: 107393
DOI: 10.1007/bf00337793
Accession: 038915595

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Bacteriophage vectors derived from lambda plac5 have been constructed. Their genomes have one EcoRI restriction site which is located at the very beginning of the lac Z gene. The major part of this gene was deleted by an in vivo intramolecular recombination. These vectors allow the fusion of a gene or an operon with the beginning of the lac Z gene, placing them under the control of the lac promoter, which carries the UV5 mutation. Some of these vectors (lambda Y) also include the lac Y gene and it too is under the control of the lac promoter. The lambda YEQS, which carries the Qam73 and Sam7 mutations, as safety mutations, has been certified as a B2 (EK2) vector by the French control commission "recombinaison génétique in vitro".

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