کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9885510 | 1537326 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transcriptional regulation of the Drosophila orc2 gene by the DREF pathway
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
DNA replication-related element (DRE) and the DRE-binding factor (DREF) play an important role in regulating DNA replication-related genes such as PCNA and DNA polymerase α in Drosophila. We have previously reported that overexpression of DREF in developing eye imaginal discs induced ectopic DNA synthesis and apoptosis, which results in rough eyes. To identify genetic interactants with the DREF gene, we have carried out a screen for modifiers of the rough eye phenotype. One of the suppressor genes identified was the Drosophila orc2 gene. A search for known transcription factor recognition sites revealed that the orc2 gene contains three DREs, named DRE1 (+14 to +21), DRE2 (â205 to â198), and DRE3 (â709 to â702). Band mobility shift analysis using Kc cell nuclear extracts detected the specific complex formed between DREF and the DRE1 or DRE2. Specific binding of DREF to genomic region containing the DRE1 or DRE2 was further demonstrated by chromatin immunoprecipitation assays, suggesting that these are the genuine complexes formed in vivo. The luciferase assay in Kc cells indicated that the DRE sites in the orc2 promoter are involved in a transcriptional regulation of the orc2 gene. The results, taken together, demonstrate that the orc2 gene is under the control of DREF pathway.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression - Volume 1732, Issues 1â3, 30 December 2005, Pages 23-30
Journal: Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression - Volume 1732, Issues 1â3, 30 December 2005, Pages 23-30
نویسندگان
Koji Okudaira, Katsuhito Ohno, Hideki Yoshida, Maki Asano, Fumiko Hirose, Masamitsu Yamaguchi,