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Promoters of the glycosyltransferase genes for ganglioside synthesis are TATA-less and often have multiple binding sites for transcription factors Sp1 and AP2 in their proximal regions. However, the function of Sp1 and AP2 in the promoters has not yet been defined. Here, we cloned 5′-flanking fragments of the mouse GM3-synthase gene and assessed the promoter activity of these fragments in mouse Neuro-2a...
WNK1 is one of WNK (With No K=Lysine) protein kinases which comprise a newly described subfamily. Our studies showed that expression of the mouse WNK1 gene was dramatically suppressed in a tumor cell line when its phenotype was altered by suppression of the GD3-synthase gene expression. The mouse WNK1 gene was expressed at a high level at early stage of embryonic brain and its expression decreased...
Galβ1-3Gal-NAcβ1-4Gal(3-2αNeuAc)β1-4Glcβ1-1Cer (GM1) is one of the most extensively investigated gangliosides that plays critical roles in the development and functions of the nervous system. UDP-Gal:βGlcNAc β1,3-galactosyltransferase (Gal-T-II) is responsible for synthesis of ganglioside GM1 in the ganglioside biosynthetic pathway. To understand the transcriptional regulation of Gal-T-II gene expression,...
To investigate the transcriptional regulation of human GM3-synthase, a 5'-flanking fragment of 1379 bp was cloned by a PCR-based procedure. Analysis of the human genomic sequence showed that the gene consists of seven exons, locates at chromosome 2, and spans over 62 kb. There are a number of potential consensus binding sites in the cloned promoter region, but TATA and CCAAT boxes were not found in...
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