Abstract：
:Tuned gene expression is crucial to the proper growth and response to the environmental changes of an organism. To enable tunable gene expression as designed is desirable in both scientific research and industrial application. Here, we introduce a novel promoter switching method based on the DDI2 promoter (PDDI2) that can fine tune the expression of target genes. We constructed a recyclable cassette (PDDI2-URA3-PDDI2) and integrated it upstream of yeast target genes to replace the native promoters by DDI2 promoter without introducing any junk sequence. We found that the presence or absence of cyanamide as an inducer could turn on or off the expression of target genes. In addition, we showed that PDDI2 could act as a gene switch to linearly regulate the expression levels of target genes in vivo. We switched the original promoters of RAD18, TUP1, and CDC6 with PDDI2 as a proof-of-concept.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang Y,Zhang K,Li H,Xu X,Xue H,Wang P,Fu YVdoi
10.1038/s41598-019-49000-8subject
Has Abstractpub_date
2019-08-29 00:00:00pages
12538issue
1issn
2045-2322pii
10.1038/s41598-019-49000-8journal_volume
9pub_type
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