共查询到20条相似文献,搜索用时 15 毫秒
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TOMM70 is a subunit of the outer mitochondrial membrane translocase that plays a major role as a receptor of hydrophobic pre-proteins targeted to the mitochondria. We report the presence of two nuclear respiratory factor 2 (NRF-2) binding motifs in the 5'-flanking region of the human Tomm70 gene and establish their essential role for promoter activity by using reporter assays in HeLa cells. We show that both NRF-2 binding sites are functional and present evidence that interactions between these sites and a CpG island contribute to expression. Mobility shift assays show that these NRF-2 sites are specifically recognized by NRF-2 present in HeLa nuclear extracts. 相似文献
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Nicole Endlich Felix Kliewe Frances Kindt Katharina Schmidt Ahmed M. Kotb Nadine Artelt Maja T. Lindenmeyer Clemens D. Cohen Franziska Döring Andreas W. Kuss Kerstin Amann Marcus J. Moeller Nazanin Kabgani Antje Blumenthal Karlhans Endlich 《Journal of cellular and molecular medicine》2018,22(5):2656-2669
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Homma KJ Tanaka Y Matsushita T Yokoyama K Matsui H Natori S 《The Journal of biological chemistry》2001,276(47):43761-43766
Insect-derived growth factor (IDGF) was originally isolated from conditioned medium of NIH-Sape-4 cells derived from flesh fly embryos. Here we demonstrated that IDGF has adenosine deaminase activity. The substrate specificity of IDGF was similar to that of the mammalian cytoplasmic adenosine deaminase. The adenosine deaminase activity of IDGF was shown to be indispensable for its growth factor activity toward NIH-Sape-4 cells. We found that there are specific binding sites for IDGF on the surface of NIH-Sape-4 cells and that it binds to these sites with a K(d) value of 2.4 x 10(-10) m. We propose that the cell surface binding sites for IDGF are specific receptors modified with an adenosine moiety. When IDGF binds to these receptors, it may deaminate the adenosine moiety, and this process may be prerequisite for the signal transduction via this receptor. 相似文献
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cdt1 is an essential target of the Cdc10/Sct1 transcription factor: requirement for DNA replication and inhibition of mitosis. 总被引:3,自引:3,他引:0
We have used an immunoprecipitation-PCR cycle to isolate physically genomic DNA sequences that are bound by the fission yeast cdc10 gene product in an attempt to identify novel target genes. An essential gene, cdt1, has been isolated whose expression is cell cycle regulated in a cdc10 dependent manner. The cdt1 promoter contains a recognition site for a sequence specific DNA binding factor. The cdc10 gene product is a component of this factor. Ectopic expression of cdt1 can complement a temperature sensitive mutation of cdc10 at semipermissive temperature. Cells carrying a null allele of cdt1 are defective in DNA replication but initiate mitotic events, suggesting that cdt1 is essential for the normal dependency relationship of S-phase and mitosis. 相似文献