Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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An evolvable oestrogen receptor activity sensor: development of a modular system for integrating multiple genes into the yeast genome
Fox, J.E. ; Bridgham, J.T. ; Bovee, T.F.H. ; Thornton, J.W. - \ 2007
Yeast 24 (2007)5. - ISSN 0749-503X - p. 379 - 390.
green fluorescent protein - saccharomyces-cerevisiae - antiestrogenic activities - directed evolution - in-vitro - populations - adaptation - efficient - mutants - assay
To study a gene interaction network, we developed a gene-targeting strategy that allows efficient and stable genomic integration of multiple genetic constructs at distinct target loci in the yeast genome. This gene-targeting strategy uses a modular plasmid with a recyclable selectable marker and a multiple cloning site into which the gene of interest is cloned, flanked by two long regions of homology to the target genomic locus that are generated using adaptamer primers. We used this strategy to integrate into a single yeast strain components of the oestrogen receptor (ER) signalling network, comprising the human ER and three reporter genes driven by oestrogen response elements (EREs). The engineered strain contains multiple reporters of ligand-dependent receptor signalling, providing sensitive, reproducible, rapid, low-cost quantitative assays of ER activity in order to screen potential receptor agonists. Further, because two of the ERE-driven reporter genes are required for growth in deficient media, the strain's growth rate - and therefore its fitness - depends on ligand-induced ER activity. This evolvable oestrogen receptor activity sensor (EERAS) can therefore provide the foundation of a long-term experimental evolution strategy to elucidate ER structure-function relations and ligand-receptor evolution.
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