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Journal Article

An improved Flp deleter mouse in C57Bl/6 based on Flpo recombinase.

MPS-Authors

Kranz,  Andrea
Max Planck Society;

Weidlich,  Stefanie
Max Planck Society;

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Naumann,  Ronald
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Stewart,  A. Francis
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

Anastassiadis,  Konstantinos
Max Planck Society;

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Citation

Kranz, A., Fu, J., Duerschke, K., Weidlich, S., Naumann, R., Stewart, A. F., et al. (2010). An improved Flp deleter mouse in C57Bl/6 based on Flpo recombinase. Genesis (New York, N.Y.: 2000), 48(8), 512-520.


Cite as: https://hdl.handle.net/21.11116/0000-0001-0B0A-9
Abstract
Recently a codon improved version of the Flpe site specific recombinase, termed Flpo, was reported as having greatly improved performance in mammalian cell applications. However the degree of improvement could not be estimated because essentially no Flpe activity was observed. Here we compare Flpe and Flpo accurately in a mammalian cell assay to estimate that Flpo is about five times more active than Flpe and similar to Cre and Dre. Consequently we generated a Flpo deleter mouse line from the JM8 C57Bl/6 ES cells used in the EUCOMM and KOMP systematic knock-out programs. In breeding experiments we show that the Flpo deleter delivers complete recombination using alleles that are incompletely recombined by a commonly used Flpe deleter. This indicates that the Flpo deleter is more efficient. (c) 2010 Wiley-Liss, Inc.