Optimisation of the Schizosaccharomyces pombe urg1 expression system

Watson, Adam T, Daigaku, Yasukazu, Mohebi, Saed, Etheridge, Thomas, Chahwan, Charley, Murray, Johanne M and Carr, Antony M (2013) Optimisation of the Schizosaccharomyces pombe urg1 expression system. PLoS ONE, 8 (12). e83800. ISSN 1932-6203

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Abstract

The ability to study protein function in vivo often relies on systems that regulate the presence and absence of the protein of interest. Two limitations for previously described transcriptional control systems that are used to regulate protein expression in fission yeast are: the time taken for inducing conditions to initiate transcription and the ability to achieve very low basal transcription in the "OFF-state". In previous work, we described a Cre recombination-mediated system that allows the rapid and efficient regulation of any gene of interest by the urg1 promoter, which has a dynamic range of approximately 75-fold and which is induced within 30-60 minutes of uracil addition. In this report we describe easy-to-use and versatile modules that can be exploited to significantly tune down P urg1 "OFF-levels" while maintaining an equivalent dynamic range. We also provide plasmids and tools for combining P urg1 transcriptional control with the auxin degron tag to help maintain a null-like phenotype. We demonstrate the utility of this system by improved regulation of HO-dependent site-specific DSB formation, by the regulation Rtf1-dependent replication fork arrest and by controlling Rhp18(Rad18)-dependent post replication repair.

Item Type: Article
Schools and Departments: School of Life Sciences > Sussex Centre for Genome Damage and Stability
Subjects: Q Science > QD Chemistry > QD0241 Organic chemistry > QD0415 Biochemistry
Depositing User: Thomas Etheridge
Date Deposited: 12 Mar 2014 09:53
Last Modified: 07 Mar 2017 06:31
URI: http://sro.sussex.ac.uk/id/eprint/47487

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