alexa Construction of gene targeting vectors from lambda KOS genomic libraries.
Genetics

Genetics

Advancements in Genetic Engineering

Author(s): Wattler S, Kelly M, Nehls M

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Abstract We describe a highly redundant murine genomic library in a new lambda phage, lambda knockout shuttle (lambda KOS) that facilitates the very rapid construction of replacement-type gene targeting vectors. The library consists of 94 individually amplified subpools, each containing an average of 40,000 independent genomic clones. The subpools are arrayed into a 96-well format that allows a PCR-based efficient recovery of independent genomic clones. The lambda KOS vector backbone permits the CRE-mediated conversion into high-copy number pKOS plasmids, wherein the genomic inserts are automatically flanked by negative-selection cassettes. The lambda KOS vector system exploits the yeast homologous recombination machinery to simplify the construction of replacement-type gene targeting vectors independent of restriction sites within the genomic insert. We outline procedures that allow the generation of simple and more sophisticated conditional gene targeting vectors within 3-4 weeks, beginning with the screening of the lambda KOS genomic library.
This article was published in Biotechniques and referenced in Advancements in Genetic Engineering

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