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| Content Provider | PubMed Central |
|---|---|
| Author | Sugiura, N. Takishima, K. |
| Abstract | We have previously shown that the maximal promoter activity of the gene for extracellular signal-regulated protein kinase 2 (ERK2; also known as p42 mitogen-activated protein kinase) resides in the 371 bp 5'-flanking sequence. In the present study we defined roles for a CCAAT box and two adjacent GC boxes in the activity of this promoter. Deletion analysis and DNase I footprinting of this 371 bp region indicated that the CCAAT box at -64 and GC boxes at -86 and -39 are crucial for promoter activity. Electrophoretic mobility-shift assays showed that transcription factor NF-Y/CBF binds to the CCAAT box. Sp1 and Sp3, members of the Sp family of transcription factors, bind to the GC boxes of the ERK2 promoter. The binding of Sp3 was predominant over that of Sp1. Disruption by mutation of any of the CCAAT box and GC boxes similarly decreased promoter activity. These three cis elements exhibited a moderate synergy in promoter function. The transactivating role of NF-Y was corroborated by the finding that a dominant-negative form of NF-YA diminished the promoter activity. These results provide clues for refining our understanding of not only the regulation of expression of the gene for ERK2 but also mechanisms by which NF-Y and Sp1/Sp3 regulate transcription. |
| Starting Page | 155 |
| File Format | |
| ISSN | 14708728 |
| e-ISSN | 14708728 |
| Journal | Biochemical Journal |
| Issue Number | Pt 1 |
| Volume Number | 347 |
| Language | English |
| Publisher Date | 2000-04-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Molecular Biology Biochemistry |
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