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The DNA replication‐related element (DRE)–DRE‐binding factor (DREF) system may be involved in the expression of the Drosophila melanogaster TBP gene
Author(s) -
Choi Tae-Yeong,
Cho Nam-Young,
Oh Younsang,
Yoo Mi-Ae,
Matsukage Akio,
Ryu Yoonseok,
Han Kyuhyung,
Yoon Jaeseung,
Baek Kwanghee
Publication year - 2000
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(00)02085-8
Subject(s) - biology , drosophila melanogaster , gene , promoter , microbiology and biotechnology , schneider 2 cells , transcription factor , gene expression , transcription (linguistics) , dna replication , genetics , rna interference , rna , linguistics , philosophy
The TATA box binding protein (TBP) is a general transcription factor required for initiation by all three eukaryotic RNA polymerases. Previously, we found that the promoter region of the Drosophila melanogaster TBP gene contains three sequences similar to the DNA replication‐related element (DRE) (5′‐TATCGATA). In the present study, we found that the DRE‐like sequences are also present in the promoter of the Drosophila virilis TBP gene, suggesting a role for these sequences in TBP expression. Band mobility shift assays revealed that oligonucleotides containing sequences similar to the DRE of D. melanogaster TBP gene promoter form specific complexes with a factor in a Kc cell nuclear extract and with recombinant DRE‐binding factor (DREF). Furthermore, these complexes were either supershifted or diminished by monoclonal antibodies to DREF. Transient luciferase assays demonstrated that induction of mutations in two DRE‐related sequences at positions −223 and −63 resulted in an extensive reduction of promoter activity. Thus, the DRE–DREF system appears to be involved in the expression of the D. melanogaster TBP gene.