Bipartite structure of the proximal promoter of a human H4 histone gene
Document Type
Journal ArticlePublication Date
1995-07-01Keywords
Base Sequence; Binding Sites; Cross-Linking Reagents; DNA; Hela Cells; Histones; Humans; Molecular Sequence Data; Nuclear Proteins; *Promoter Regions (Genetics); Protein Binding; Ultraviolet RaysLife Sciences
Medicine and Health Sciences
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Show full item recordAbstract
The proximal promoter of the human H4 histone gene FO108 contains two regions of in vivo protein-DNA interaction, Sites I and II. Electrophoretic mobility shift assays using a radiolabeled DNA probe revealed that several proteins present in HeLa cell nuclear extracts bound specifically to Site I (nt-125 to nt-86). The most prominent complex, designated HiNF-C, and a complex of greater mobility, HiNF-C', were specifically compatable by an Sp1 consensus oligonucleotide. Fractionation of HiNF-C using wheat germ agglutinin affinity chromatography suggested that, like Sp1, HiNF-C contains N-acetylglucosamine moieties. Two minor complexes of even greater mobility, designated HiNF-E and F, were compatable by ATF consensus oligonucleotides. A DNA probe carrying a site-specific mutation in the distal portion of Site I failed to bind HiNF-E, indicating that this protein associated specifically to this region. UV cross-linking analysis showed that several proteins of different molecular weights interact specifically with Site I. These data indicate that Site I possesses a bipartite structure and that multiple proteins present in HeLa cell nuclear extracts interact specifically with Site I sequences.Source
J Cell Biochem. 1995 Jul;58(3):372-9. Link to article on publisher's siteDOI
10.1002/jcb.240580310Permanent Link to this Item
http://hdl.handle.net/20.500.14038/34295PubMed ID
7593258Related Resources
Link to Article in PubMedae974a485f413a2113503eed53cd6c53
10.1002/jcb.240580310