cDNA clones encoding leucine-zipper proteins which interact with G-CSF gene promoter element 1-binding protein.
The gene expression of granulocyte colony-stimulating factor (G-CSF) is induced by lipopolysaccharide (LPS). GPE1, a cis-controlling element of the G-CSF gene, functions as an LPS-responsive element. GPE1-binding protein (GPE1-BP), a leucine-zipper protein, did not independently activate G-CSF gene expression. Protein blot analysis with biotinylated GPE1-BP revealed that there were nuclear proteins that interact specifically with GPE1-BP. Three leucine-zipper proteins were isolated from mouse cDNA expression libraries by this method: NF-IL6, ATF4, and a novel ATF4-related ATFx. The interactions of these proteins with GPE1-BP may play key roles in G-CSF gene expression.
Osaka Bioscience Institute, Japan.
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Nishizawa
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Nagata
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000378:metabolism*; D016179:Granulocyte Colony-Stimulating Factor / Q000235:genetics*; D016350:Leucine Zippers / Q000235:genetics*; D051379:Mice; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D016415:Sequence Alignment
D004268:DNA-Binding Proteins; D016179:Granulocyte Colony-Stimulating Factor; D004247:DNA