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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning and characterization of the proximal promoter region of the mouse glutamate-L-cysteine ligase regulatory subunit gene.

We describe upregulation of the mRNA for the mouse glutamate-cysteine ligase regulatory subunit gene (Glcl-r) in Hepa-1 cells treated with beta-napthoflavone (BNF) and tert-butylhydroquinone (tBHQ). A 2-kb fragment of the proximal promoter region of the gene was cloned and sequenced, and sequence analysis reveals a high degree of homology when compared to the human glutamate-cysteine ligase regulatory subunit gene promoter. Primer extension analysis indicates a major transcription start site 218 bp upstream of the translation start codon in a CpG-rich region, suggesting that transcription is Sp1 mediated. Reporter constructs containing nested deletion fragments of the Glcl-r promoter demonstrate that regulatory elements sufficient for basal and tBHQ-inducible expression lie between -273 and -787 bp relative to the translation start codon and that the distal promoter may contain negative regulatory elements.[1]


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