Reference: Babineau D, et al. (1985) The FLP protein of the 2-micron plasmid of yeast. Purification of the protein from Escherichia coli cells expressing the cloned FLP gene. J Biol Chem 260(22):12313-9

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Abstract


Most laboratory strains of the yeast Saccharomyces cerevisiae contain many copies of an autonomously replicating plasmid called 2-micron circle DNA. This plasmid codes for a site-specific recombinase, the FLP protein which promotes recombination across two 599-base pair inverted repeats of the plasmid DNA. We have cloned the FLP gene under the control of a strong Escherichia coli promoter and have hyperproduced the protein in that organism. Cell-free extracts from this source promote highly efficient site-specific recombination in vitro and we have used this activity to purify the FLP protein substantially. The enzyme acts efficiently on circular and linear substrates and requires only monovalent or divalent cations for activity.

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Journal Article | Research Support, Non-U.S. Gov't
Authors
Babineau D, Vetter D, Andrews BJ, Gronostajski RM, Proteau GA, Beatty LG, Sadowski PD
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