RRC ID 10904
著者 Emoto M, Miki M, Sarker AH, Nakamura T, Seki Y, Seki S, Ikeda S.
タイトル Structure and transcription promoter activity of mouse flap endonuclease 1 gene: alternative splicing and bidirectional promoter.
ジャーナル Gene
Abstract Flap endonuclease 1 (FEN1) is a structure-specific nuclease involved in DNA replication and repair. The mouse Fen1 gene, which has two exons, is located immediately adjacent to the gene corresponding to full-length cDNA of Riken 1810006K21 (1810006K21Rik) in a head-to-head orientation. Transcription initiation sites of each gene are 274 bp apart in the mouse genome. The spacer sequence between the bidirectional genes contains a CpG island, but lacks the typical TATA box. In the present study, transcription of the mFen1 gene was started from two initiation sites, and the first noncoding exon was spliced to the second exon using two different splicing donor sites, producing 3 kinds of mFen1 transcripts. A 594-bp fragment between the mFen1 and 1810006K21Rik genes, which contains two conserved sequence blocks (CSB) between mouse and human sequence, functions as a bidirectional promoter. The multiple cis-elements, including an Ets-binding site and E-box in the CSB, are involved in activation or repression of transcription in both directions. Interestingly, the E-box activates mFen1 transcription and simultaneously represses promoter activity in the opposite direction. Mutation of either splicing donor site of the mFen1 gene produced limiting alternative splicing products, but did not affect luciferase activity. In contrast, the splicing-defective mutation produced by disruption of the acceptor site completely lacked luciferase activity, indicating that the splicing has a significant effect on production of luciferase protein by shortening the 5'-untranslated region of the mRNA.
巻・号 357(1)
ページ 47-54
公開日 2005-8-29
DOI 10.1016/j.gene.2005.05.009
PII S0378-1119(05)00264-7
PMID 15967598
MeSH 5' Untranslated Regions / genetics Alternative Splicing / genetics* Animals CpG Islands / genetics Exons / genetics Flap Endonucleases / genetics* Gene Expression Regulation / genetics* Genome Humans Mice Mutation RNA Splice Sites / genetics Response Elements / genetics* TATA Box / genetics* Transcription, Genetic / physiology*
IF 2.984
引用数 6
WOS 分野 GENETICS & HEREDITY
リソース情報
ヒト・動物細胞 Hepa 1-6(RCB1638)