TRANSCRIPTIONAL REGULATION OF THE ISOCITRATE LYASE ENCODING GENE IN SACCHAROMYCES-CEREVISIAE

被引:38
作者
FERNANDEZ, E [1 ]
FERNANDEZ, M [1 ]
MORENO, F [1 ]
RODICIO, R [1 ]
机构
[1] UNIV OVIEDO,FAC MED,DEPT BIOL FUNC,AREA BIOQUIM & BIOL MOLEC,E-333006 OVIEDO,SPAIN
关键词
ISOCITRATE LYASE; GLYOXYLATE PATHWAY; PROMOTER ELEMENT; REGULATION; YEAST;
D O I
10.1016/0014-5793(93)80661-D
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In this work, we studied the transcriptional regulation of isocitrate lyase synthesis. In Northern blot analyses we first showed that the steady-state ICL1 mRNA levels depend on the carbon source used for growth. In addition, we determined the kinetics of transcriptional repression upon a shift of ethanol-grown cells to glucose and of the induction when cells were transferred from glucose to ethanol. By deletion analyses as well as by studying the influence on expression of different fragments cloned into the heterologous CYC1 promoter lacking its own UAS sequences, we defined UAS and URS elements in the ICL1 promoter. A region mediating the control by CAT3, a gene also involved in the control of expression of other genes subject to carbon catabolite repression, was found to overlap with one of these UAS elements.
引用
收藏
页码:238 / 242
页数:5
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