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Reference: He D, et al. (2008) [Constructing recombinant plasmid pSH-CUP and knockout of acid trehalase gene in baker's yeast] Wei Sheng Wu Xue Bao 48(2):147-51

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Abstract


The ATH1 gene encoded acid trehalase in Saccharomyces cerevisiae. The gene disruption cassette combined the heterologous dominant kan(r) resistance marker with a Cre/loxP-mediated marker removal procedure. The gene disruption cassette was produced by PCR using the same long oligonucleotides comprising 50 nucleotides that annealed to sites upstream or downstream of the genomic target sequence to be deleted. After transformation of the linear disruption cassettes with a Cre/loxP-mediated marker into the cells of Saccharomyces cerevisiae BY-6, selected transformants were checked by PCR for correct the integration of the cassette and concurrent deletion of the chromosomal target sequence. The copper-resistance gene (CUP1-MT1) was cloned into pSH47, which yielded pSH-CUP. The recombinant plasmid pSH-CUP was transformed into the cells of Saccharomyces cerevisiae BY-6(delta ATH1, G418(r)), and transformants were selected for copper resistance. Upon expression of the Cre recombinase results in removal of the kan(r) gene, leaving behind a single loxP site at the chromosomal locus. Construction of the recombinant plasmid pSH-CUP avoided inserting non-yeast gene and made the loxP - kanMX - loxP gene disruption cassette more conventional for eukaryotic organism gene disruption.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't | English Abstract
Authors
He D, Xiao D, Lv Y
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