| Literature DB >> 20935129 |
Laetitia Fontaine1, Damien Dandoy, Céline Boutry, Brigitte Delplace, Marie Henry de Frahan, Christophe Fremaux, Philippe Horvath, Patrick Boyaval, Pascal Hols.
Abstract
A versatile natural transformation protocol was established for and successfully applied to 18 of the 19 Streptococcus thermophilus strains tested. The efficiency of the protocol enables the use of in vitro-amplified mutagenesis fragments to perform deletion or insertion of large genetic fragments. Depending on the phenotype linked to the mutation, markerless mutants can be selected either in two steps, i.e., resistance marker insertion and excision using an adapted Cre-loxP system, or in one step using a powerful positive screening procedure as illustrated here for histidine prototrophy.Entities:
Mesh:
Year: 2010 PMID: 20935129 PMCID: PMC2988589 DOI: 10.1128/AEM.01671-10
Source DB: PubMed Journal: Appl Environ Microbiol ISSN: 0099-2240 Impact factor: 4.792