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KMID : 0545120060160091459
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Journal of Microbiology and Biotechnology
2006 Volume.16 No. 9 p.1459 ~ p.1463
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Screening of Yeast Diauxic Promoters for Production of Foreign Proteins
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Kim Jin-Ju
Kim Sang-Woo
Jeon Che-Ok
Yun Ji-Yun
Lee Hyun-Sook
Ro Hyeon-Su
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Abstract
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This study explored yeast diauxic promoters using a green fluorescent protein (GFP) reporter to screen growth phase-controlled promoters applicable for foreign protein production. Twenty-five diauxic promoters were inserted into a yeast 2-micron vector in front of the reporter GFP gene. The expressed GFP signal intensity measurements showed that 23 out of the 25 promoters produced a significant fluorescent signal when the cells were in the diauxic growth phase. Among the two strongest promoters pYDL204W and pYLR258W, the former remained constantly active after its activation at the diauxic shift, whereas the latter was only transiently activated right after the deprivation of the medium glucose.
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KEYWORD
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Diauxic promoter, glucose, yeast, GFP reporter, DNA microarray
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