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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Durand-heredia, Jorge M. Karpichev, Igor V. Luo, Yi Small, Gillian M. |
| Description | Author Affiliation: Karpichev IV ( Department of Biology, City College of the City University of New York, New York, New York 10031, USA.) |
| Abstract | Transcriptional activation of many genes involved in peroxisome-related functions is regulated by the Oaf1p, Pip2p, and Adr1p transcription factors in Saccharomyces cerevisiae. We have analyzed the in vivo binding characteristics of Oaf1p-Pip2p and found that this complex is recruited to its target oleate-response element (ORE) under all growth conditions tested. In addition, this complex also binds to ORE-containing genes that do not appear to be regulated by these proteins, as well as to some genes lacking conventional OREs. The recruitment of the Oaf1p-Pip2p complex was greatly increased upon glucose derepression, possibly due to Oaf1p phosphorylation with only moderate increases upon oleate induction. Thus, this complex may receive a nutritional cue while it is already bound to DNA, suggesting that, in addition to the increase in Oaf1p-Pip2p binding, other mechanism(s) such as enhanced Adr1p association may drive the expression of highly inducible fatty acid-responsive genes. Adr1p binds to target genes in an oleate-dependent fashion and is involved in Oaf1p-Pip2p binding. In turn, the Oaf1p-Pip2p complex appears to be important for Adr1p binding to a subset of oleate-responsive genes. Adr1p is a positive regulator of ORE-containing genes, but it also acts as a negative factor in expression of some of these genes. Finally, we have also shown that Adr1p is directly involved in mediating oleate induction of Oaf1p-Pip2p target genes. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 16 |
| Volume Number | 283 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2008-04-18 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Expression Regulation, Fungal Saccharomyces Cerevisiae Metabolism Transcription, Genetic Acetyltransferases DNA-Binding Proteins Epitopes Chemistry Fatty Acids Models, Biological Oleic Acid Phosphorylation Protein Binding Response Elements Genetics Saccharomyces Cerevisiae Proteins Transcription Factors Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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